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Human Physiology Final
Fichas del conjunto (339)
- 1The average human has how much water in their body?40 L
- 2Water is dispersed into 3 containers, what are they and by how much?Intercellular Fluid:2/3
Plasma:1/15
Interstitial Fluid:4/15 - 3Can plasma proteins cross capillary beds?No, they are too big.
- 4What are the functions of Integral Proteins?1.Channel for Diffusion
2.Transport Molecules
3.Structural Support
4.Enzymes/Receptors - 5What does the Singer-Nicolson Fluid Mosaic Model do?Regulates what enters and exits the cell. It is less permeable then capillary walls.
- 6Capillary Walls use what to move molecules across boundaries?Simple Diffusion
Osmosis
Pressure Driven Flow - 7Cell Membrane uses what to move molecules across boundaries?endo/exocytosis
facilitated diffusion
active transport
co-transport - 8If Surface Area, Gradient, or Permeability increase then...Diffusion Rate will increase
- 9If Surface Area, Gradient, or Permeability decrease then...Diffusion Rate will decrease
- 10If Diffusion Surface Size or Membrane Thickness increase...Diffusion Rate will decrease
- 11If Diffusion Surface Size or Membrane Thickness decrease...Diffusion Rate will increase
- 12Polar and Positive result in...Poor Permeability
- 13The 8å Rule states what?Anything larger than 8å cannot diffuse without assistance.
- 14Water follows what type of environment?Hypertonic
- 15What facilitates high to low concentration and requires facilitators?Facilitated Diffusion
- 16What is Cysteinuria?A disease characterized by cystein in urine.
- 17What facilitates a low to high concentration and requires ATPActive Transport
(Na+/K+Pump) - 18What are Ion Gates used for?To take back ions distributed by Ion Pumps.
- 19Somatic Motor Nervous System involves what?Signals regarding skeletal muscles.
- 20Autonomic Motor Nervous System involves what?Signals regarding smooth/cardiac muscles.
- 21The (Autonomic) Sympathetic Nervous System involves what?Emergency Responses "Fight or Flight" actions
- 22The (Autonomic) Parasympathetic Nervous System involves what?Vegetative Responses "Relax" actions
- 23Contain sensory neurons sending signals to CNS.Sensory Nerve
- 24Contains motor neurons sending signal away from CNS.Motor Nerve
- 25Contain both sensory/motor neuron sending signals.Mixed Nerve
- 26If the Cranial Area has: 12 Sensory 9 Somatic How many are mixed?9
- 27If the Spinal has: 31 Somatic 29 Sensory How many are mixed?29
- 28Integration involves...Only the Central Nervous System
- 29What is transduction?Converting stimulus into e- signals.
- 30What is modality?Translating e- signals as appropriate stimulus.
- 31What is adaptation?Decreased sensitivity to a continuous stimuli.
- 32What is phasic adaptation?Adaptations that occur quickly such as touch or smell.
- 33What is tonic adaptation?Adaptations that occur slowly such as pain or balance.
- 34What is intensity?The proportion to sensory response?
- 35What is population coding?The number of receptors stimulated.
- 36What is frequency coding?The affected receptors ability to send more signals.
- 37Pressure and Chemical Stimulation is activated by what?Enteroreceptors (inside)
- 38Sight and sound are stimulated by what?Enteroreceptors (outside)
- 39Balance is stimulated by what?Proprioceptors (inside/outside)
- 40Photoreceptors are stimulated bylight
- 41Thermoreceptors are stimulated bytemperature
- 42Nociceptors are stimulated bypain
- 43Mechanoreceptors are stimulated bymechanical distortion of receptors
(stretch, pressure, touch, hearing, balance) - 44What percentage of Nervous System Cells are made up of Glial Cells?50%
- 45What do Satellite Cells do?Support cell bodies of neuron in the PNF.
- 46What do Microglia do?They are modified monocytes or macrophages in the CNS.
- 47What is the function of Ependymal Cells?To produce cerebrospinal fluid.
- 48What are the two functions of Cerebrospinal Fluid?1. Shock Absorption
2. Material Exchange - 49What is the function of Astrocytes?Neuron Repair
(most numerous Glial Cell) - 50What is the function of Schwann Cells and Oligodendrocytes?To form myelin sheath around neurons.
- 51What is the conduction rate of a myelinated neuron?100m/sec
- 52What is the conduction rate of a unmyelinated neuron?1m/sec
- 53Part of the PNS Wraps around 1 neuron Has outer base membrane Helps with neuron regenerationSchwann Cell
- 54Part of the CNS Wraps around multiple neurons Has no outer base membrane Neuron regeneration is difficultOligodendrocyte
- 55What is Multiple Sclerosis?Autoimmune Disease that progressively degenerates CNS myelin.
- 56What are low levels of serotonin associated with?Clinical Depression
- 57What is the Norepinephrine/Epinephrine ratio in most synapse?95N/5E
- 58What is the Threshold Potential that allows Ion Gates to open?-50mV
- 59What is the Resting Membrane Potential?-70mV
- 60What is Nernst Potential?membrane voltage if ion of interest is free to move.
- 61What is the Nernst Potential of Na+ (Sodium)+60mV
- 62What is the Nernst Potential of K+?-90mV
- 63At what mV do Na+ Gates open and Depolarization begin?-50mV
- 64At what mV do Na+ Gates close, K+ Gates open, and Repolarization begin?+40mV
- 65At what mV do K+ Gates close?-70mV
- 66What kind of effect does ACH have on the heart and skeletal muscles?Heart: slows
Muscle: contraction - 67What effect does ACHE have on the heart and skeletal muscles?Heart:prevents heart from slowing too much
Muscles: prevents excess contration - 68What effect does Atropine have on heart?Prevents heart from slowing too much
- 69What is the function of MAO?Break down Serotonin, Norepinephrine, and Epinephrine
- 70What is the function of Pseudoephedrine?Sympathetic Mimic Alpha Receptors
- 71What is the function of Isoproterinol?Sympathetic Mimic Beta Receptors
- 72What does ACH bind to in the Neuromuscular Synapse prior to a muscle twitch?N2
- 73What does Ca+ bind to during a muscle contraction?Troponin
- 74What is ATP needed for during muscle contraction?Reload the Crossbridge
- 75When does relaxation occur in a muscle?After Ca+ is removed
- 76What causes Rigor-mortis?Ca+ being leaked causing contraction without ATP to facilitate muscle relaxation
- 77What are the functions of the Circulatory System?Transport
Acid/Base Balance
Thermoregulation
Immune Response - 78Where are major capillary beds found?Lungs
Liver
S. Intestine
Kidneys - 79Pressure Gradient of blood is...From high to low
- 80The left side of the heart is how much bigger then the right side?3 x with 10 x more pressure
- 81What is the function of the Coronary Vessels?To supply the heart/cardiac muscles with oxygenated blood.
- 82What is considered the pacemaker of the heart?SA Node
- 83What are the two types of cardiac muscles cells found in the heart?Contractile Cells:99%
Autorhythmic Cells:1%
(Purkinge Fibers) - 84Neurogenicwhere a neuron causes the muscle to contract (skeletal muscle)
- 85Myogenicwhere contraction is initiated by the muscle itself
(cardiac muscle) - 86How quickly do signals move through the Perkinge Fibers?5m/sec
- 87What does syncytium mean?When many act as one.
- 88When does SLOW Ca+ ions become active in Conductile AP?-60mV
- 89When do FAST Ca+ ions become active in Conductile AP?-40mV
- 90When do K+ ions become active in Conductile AP?+20mV
- 91Why are both Ca+ and K+ ions released during Conductile AP?In order to prevent tetany.
- 92How long is the AV Node Delay?0.1 seconds
- 93How long does a Contractile AP last?250msec
- 94What is the Resting Membrane Potential during a Contractile AP?-90mV
- 95What is the Threshold during Contractile AP?-70mV
- 96When do Ca+/K+ ions become active in Contractile AP?+20mV
- 97What do AV Valves prevent?Flow from Ventricle back into Atria.
- 98What do Semilunar Valves prevent?flow from Artery to Ventricle
- 99If the pressure in Atria>then in VentricleOpen AV Valve
- 100If pressure in the AtriaClose AV Valve
- 101Pressure in Ventricle>then in ArteryOpen SL Valve
- 102Pressure in VentricleClose SL Valve
- 103What happens to make 1st sound of heart beatAtrial Valve Closing
- 104What happens to make 2nd sound of a heart beatSemilunar Valve Closing
- 105What is a murmur?An abnormal heart sound
- 106How long does a Cardiac Cycle last?0.8 seconds
- 107What is happening during systole?The heart is emptying
- 108What is happening during diastole?The heart is filling
- 109What is Active Filling?When 20% of Ventricles are filled by emptying the Atria in 0.1 seconds.
- 110What is Passive Filling?When 80% of Ventricles are filled in 0.7 seconds
- 111What is the highest pressure in the L. Ventricle Systole?120mmHg
- 112What is the lowest pressure in the L. Ventricle Diastole?0mmHg
- 113What is the End Diastolic Volume?135mL
- 114What is the End Systolic Volume?65mL
- 115What is the average Stroke Volume?70mL
- 116What is the Frank-Starling Law of the Heart?The heart pumps all the blood that returns to it.
- 117What is Cardiac Output?SV*HR
- 118What is the average CO?5 L/5000mL
- 119What is the average blood volume for both males and females?Males: 5.5L
Females:5.0L - 120What causes Congestive Heart Failure?The heart not being able to pump the blood it needs returned to it
- 121What is Stroke Volume?The amount of blood leaving the heart
- 122What is Venus Return?the amount of blood returned to the heart
- 123What causes the P-Wave of a EKG?Atrial Depolarization
- 124What causes the QRS Complex of a EKG?Ventricle Depolarization and Atrial Repolarization
- 125What causes the T-Wave of a EKG?Ventricle Repolarization
- 126About what percentage of blood is in the heart?7%
- 127About what percentage of blood is in the pulmonary circuit?9%
- 128About what percentage of blood is in the systemic circuit?84%
- 129About what percentage of blood is in the arteries?15%
- 130About what percentage of blood is in the capillaries?5%
- 131About what percentage of blood is in the systemic veins?64%
- 132Why do the Great Elastic Arteries have Compliance (stretchability)?To dampen the systolic pressure
- 133Why do the Great Elastic Veins have Elasticity (Return to Shape)?To maintain diastolic pressure
- 134Why do Small Muscular Arteries and Arterioles have muscle layers?Vasodilation/Vasoconstriction
- 135What is the diameter of a Red Blood Cell?7 micrometers
- 136What is the diameter of a capillary?6 micrometers
- 137Why are veins a one way valve system?To aid in returning blood back to heart, due to low pressure
- 138What is the blood pressure when entering capillaries?37mmHg
- 139What is the blood pressure leaving the capillaries?17mmHg
- 140Where is surface area the highest?Capillaries
- 141Where is velocity the highest?Arteries
- 142Where is the blood volume the highest?Veins
- 143Where is permeability the highest?Capillaries
- 144Where is elasticity the highest?Arteries
- 145Where is smooth muscle thickness the highest?Arterioles
- 146How much plasma is lost per day due to Capillary Filtration?3L
- 147What is the daily lymph flow?3L/day
- 148Where is the HQ for White Blood Cells?Lymph Nodes
- 149What is edema?Build up of ISF
- 150What is Rheumatic Fever?autoimmune disease caused by streptococcus bacteria leading to digestion of valves
- 151What is responsible for the moment to moment BP regulation?Baroreceptors
- 152Blood Pressure=CO*TPR
- 153Total Peripheral Resistance=8ml/pi(r)
m=viscosity
l=vessel length
r=vessel radius - 154What is anemia?low viscosity in blood
- 155What is polycythemia?high viscosity in blood
- 156Gaining weight will cause a greater vessel length which leads to...higher TPR
- 157Where is the Cardio Vascular Center of the Brain?Medulla Oblongata
- 158What is Ischemia?Compromise in blood supply
- 159What is Streptokinase?A clot dissolver
- 160What is an Arrhythmia?abnormal conduction pattern
- 161What is Lidocaine?Na+ Blocker
- 162What is Verapamil?Ca+ Blocker
- 163What is Propranolol?Beta Receptor Blocker
- 164What is Atherosclerosis?abnormal rhythms
- 165What is values are considered Hypertension?140/90
- 166What is an inappropriate clot that attaches to a vessel wall called?Thrombus
- 167What is the average hematocrit percent ratio for males?Male: 45% RBC
55% Whole - 168What is the average hematocrit for females?42%RBC
58% Whole - 169What percentage of plasma is made up of water?91%
- 170What percentage of plasma is made up of salts?0.9%
- 171What percentage of plasma is made up of organic compounds?1.1%
- 172What percentage of plasma is made up of plasma proteins?7%
- 173What percentage of plasma proteins are Albumin?60%
- 174What percentage of plasma proteins are Globulin?36%
- 175What percentage of plasma proteins are Fibrinogen?4%
- 176What is the response to vessel injury called?Hemostasis
- 177What does Heprin do?prevents clots
- 178What does Plasmin do?dissolves clots
- 179What is the catalyst for Fibrinogen called?Thrombin
- 180How many RBC are there per mm3?5,000,000
- 181How many WBC per mm3?5,000-9,000
- 182How many platelets per mm3?300,000
- 183What is the lifespan of a RBC?120 Days
- 184What is the Hb/RBC ratio?280,000,000
- 185What is the production and death rate of RBCs?2,500,000/day
- 186Low oxygen levels will result in what?Kidneys producing Erythroproietin to stimulate bone marrow to produce RBCs
- 187What is Iron transported by?Transferrin
- 188What does Iron combine with when stored in the liver?Ferritin
- 189What is Infant Jaundice called?Hemopoiesis
- 190How big is the respiratory dead space?150mL
- 191What is the normal breath volume?500mL
- 192What does "mouth breathing" result in?Poor cleaning, humidifying, and conditioning of air
- 193What does "nose breathing" result in?Poor air flow
- 194How many respiratory branches are in the conduction zone?23
- 195How many alveoli are there?300,000,000
- 196What is the surface area of alveoli?70m
- 197What are the 3 types of alveolar cells?Type 1: Diffusion Surface
Type 2: Secrete Surfactant
Type 3: Alveolar Macrophage - 198What is the P02/PC02 of air entering the lungs?100/40mmHg
- 199What is the P02/PC02 of air leaving the lungs?40/46mmHg
- 200How much 02 and C02 is cycled per minute?250mL
- 201What is the oxygen diffusion rate?(60) steep gradient/low permeability
- 202What i stye CO2 diffusion rate?(6) shallow gradient/high permeability
- 20302 + Hb =Oxyhemoglobin due to Fe02
- 204Hemoglobin is attracted to what?high gas levels
- 205What is the saturation rate if P02=4075%
- 206What is the saturation rate if P02 = 10097.5%
- 207At 75% saturation rate, how many heme are still saturated?3/4
- 208Carbonmonoxide has how much greater affinity to Hb then O2?200x
- 209Where is the Respiratory Center located?Medulla Oblongotta
- 210What is the ventilation/perfusion ratio?It must remain equal
- 211Why can we not hod our breath until we die?Medulla Oblongata Cerebral Override
- 212What i stye Herring Reflex?stimulation of stretch receptors in aveloli
high stretch=exhale
low stretch=inhale - 213What nerve carries signal from stretch receptors?Vagus Nerve
- 214What type of receptors are in the Medulla Oblongata and what are they activated by?Chemoreceptors activated by Hydrogen
- 215Which can cross the Blood Brain Barrier, C02 or H?C02
- 216Where are plasma proteins produced?Liver
- 217Where are gamma globulins produced?WBCs
- 218What is the partial atmospheric pressure (PATM)?760mmHg
- 219Oxygen makes up how much of the PATM?21%
- 220C02 make up how much of the PATM?0.3%
- 221If a large amount of 02 is being used, how much will the percent saturation decrease?67.5% to 30% value
- 222How long is the GI Tract?10 meters
- 223What are the major chemical processing of food?enzymes, acids, and salt
- 224What is the submucosa innervated by?Meissner's Plexus
- 225What is motility/peristalsis innervated by?Averbach's Plexus
- 226What are the 4 tunics of the gut?1. Mucosa
2. Submucosa
3. Muscularis
4. Serosa - 227What are the sites of mechanical processing of food?mouth and stomach
- 228What are the sites of chemical processing of food?mouth, stomach, small intestine
- 229What are the sites of food absorption?Small and Large Intestines
- 230What affect does the Parasympathetic N.S. have on motility?Increase
- 231What affect does the Sympathetic N.S. have on motility?Decrease
- 232What affect does the Parasympathetic N.S. have on blood flow?No Effect
- 233What affect does the Sympathetic N.S. have on blood flow?Decrease
- 234What affect does the Parasympathetic N.S. have on enzyme secretion rate?Increase
- 235What affect does the Sympathetic N.S. have on enzyme secretin rate?Decrease
- 236What types of drugs are used to regulate BP?Beta Receptor Blockers
diuretics
ACE Inhibitors - 237What are the categories of Globulins?Alpha: transport
Beta: blood clotting
Gamma: antibodies - 238What is the function of Albumin?transport bile salts, bilirubin, and penicillin
- 239What is the function of Fibrinogen?blood clotting
- 240What is an embolism?free floating clot
- 241What is a thrombus?clot that attaches to vessel wall
- 242What is hemophilia?genetic disorder enabling the production of Factor 8
- 243Renal Plasma Flow + Ureter Flow=Renal Artery Flow
- 244What absorption is done in the L. Intestine?Only water and salts
- 245Saliva kills bacteria with what?Bacteriolytic Enzymes
- 246What condition is characterized by the pancreatic duct becoming inflamed and enzymes become active and begin digesting the pancreas.Acute Pancreatitis
- 247What is cholera caused by?bacteria irritation in the L. Intestine
- 248What do the a and b cells produce in the pancreas?a:glucagon
b:insulin - 249Condition/Disease caused by inflammation, is viral, and repeated exposure to toxins.Hepatitis
- 250What is the pH level of the stomach?2.0
- 251Where are ulcers most commonly found in the G.I. Tract?S. Intestine
- 252What is the physical state ratio of feces?75% Water
25% Solids - 253What does gastrin do?It is a pro-digestive hormone that increases activity in the stomach, small, and large intestine
- 254What type of muscle do the anal sphincters have?Internal:Smooth
External:Skeletal - 255What is the solid material percentage of feces?30% Dead Bacteria
10-20% Fat
1-2% Protein - 256What is pepsinogen?Inactive protease that breaks down once activated from acidic levels produced by Parietal Cells.
- 257What is the Transport Max?Glucose movement of 375mg/min
- 258What is Renal Threshold?Plasma concentration of glucose at 300mg/mL
- 259What is the percentage of cardiac output received by the kidneys?20-25%
- 260What is the result of excessively high K+ levels in the plasma?Adrenal Cortex produces Aldosterone which causes the kidneys to have a high K+ secretion, leading to increased Na+ reabsorption and K+ imbalance.
- 261What is reabsorption?The return of filtered material to the blood.
124ml/min or 178.5L/day - 262If ADH increases...water reabsorption, urine osmolarity, and permeability increase while urine volume decrease
- 263If ADH decreases...water reabsorption, permeability, and urine osmolarity decrease while urine volume increases
- 264What does ADH do and where is it produced?alters permeability to water and is produced in the hypothalamus
- 265How much of the mechanical processing is done in the stomach?50% the other 50% is in the mouth
- 266What effect does alcohol have on ADH?it blocks ADH release
- 267When is renin produced?when there is a low level of BP, Plasma Volume, and NaCl concentration
- 268ISF is progressively what through renal processing?Hypertonic
- 269What do the endocrine and exocrine glands produce in the pancreas?Endocrine:Hormones
Exocrine: Non-Hormonal Product - 270What is constipation caused by?Too much water removed and too little fiber in diet
- 271When do the DCT/CD become impermeable and permeable to water?impermeable:overhydration
permeable:dehyrdation - 272Where is the most important site for reabsorption?Proximal Condiluted Tubule
(Not Regulated) - 273Where are gastric juices produced and by how much per day?submucosal gland
2L/day - 274What percentage of adults contract diabetes mellitus?4-6%
- 275What percentage of diabetes contracted is Type I?10-20%
- 276What percentage of diabetes contracted is Type II?80-90%
- 277When Saturation Rate = 0Filtration = Reabsorption + Excretion
- 278What is the gradient between the ALH and ISF?200mosm
- 279What percentage of NaCl is reabsorbed in the Ascending Loop of Henley?15%
- 280What allows food to enter the S.Intestine when relaxed/open?Pyloric Sphincter
- 281How much bile does the liver produce per day?250-1500mL/day
- 282What are the cells produced by Gastric Glands and what is their functions?Goblet Cells: produce mucus
G-Cells: secrete gastrin
Chief Cells: secrete pepsinogen
Parietal Cells: secrete acid and Intrinsic Factor - 283What is responsible for the chemical processing of digestion in the mouth?Salivary Amylase
- 284What is responsible for lubrication in the mouth?Mucus/Mucin Protein
- 285All enzymes are secreted in what form? And are later activated by what kind of pH in the S. Intestine?Inactive
Basic - 286What factors make mammalian evolution so successful?1.Hair
2.Mammary Glands
3.Ability to produce variable concentrations of urine - 287What percentage of water is reabsorbed in the Descending Loop of Henley?15%
- 288What is the only reason the stomach is needed to live?Due to the Intrinisic Factor produced by Parietal Cells which increases B12 absorption and Mitosis.
- 289How much material is processed per day?500mL/day
- 290How thick is the surface area of the S. Intestine?1 cell thick
- 291What is the minimum renal clearance?0mL/min
- 292What is the intermediate renal clearance?125ml/min
(insulin) - 293What is diabetes insipidus?breakdown of ADH mechanism leading to 20L/day urine volume
- 294What is the excretion rate?1mL/min
1.5L/day - 295What is the only activity that occurs in the esophagus?Paristalsis
- 296What color of blood reaches the liver from the Hepatic Portal Vein?Yellow
(High Nutrients) - 297What color blood reaches the liver from the body?Red
(High oxygen) - 298What color blood reaches the heart from the liver?Blue
- 299What percentage of basal metabolic rate is used and why?5-6%
- 300What is the flap of cartilage that covers the trachea during swallowing?Epiglottis
- 301What is the condition/disease characterized by scar tissue replacing hepatocytes?Cirrhosis
(Chronic Hepatitis) - 302What enzymes are found in the pancreatic juice and what do they metabolize?Protease
Lipase
Amylase
Nuclease - 303What does protease digest?trypsin, chymotrypsin, carboxypeptidase
- 304What does lipase digest?phospholipase, lipase, cholestolesterase
- 305What does amylase digest?pancreatic amylase
- 306What does nuclease digest?ribonuclease, deoxyribonuclease
- 307What is the pH of the small intestines?8-10
- 308What is renal clearance?How effective the kidney removes solutes from the plasma.
- 309What are the 4 processes of urine formation?Filtration
Reabsorption
Secretion
Excretion - 310What is the Renal Plasma Flow per day?900L/day
625mL/min - 311What is secretion?A 2nd chance to remove unwanted material.
- 312What is the Filtration Fraction?20% Plasma Flow
180L/day - 313What is renin and where is it produced?Catalyst to convert Angiotensinogen to Angiotensin1
produced in Kidneys - 314Where is Angiotensinogen produced?Liver
- 315Where is Angiotensin Conversion Enzyme produced?Lungs
- 316What is the purpose of Angiotensin Conversion Enzyme produced?Catalyst to convert Angiotensin 1 to Angiotensin 2
- 317What is the byproduct of bacteria in the L. Intestine and what is it used for?Vitamin K
Clotting - 318What is the Glomerular Filtration Rate (GFR) per day?180L/day
125mL/min - 319What produces pancreatic juice and how much per day?Aciner Cells
1-2L/day - 320Where are all macronutrients reabsorbed and by how much?Proximal Condiluted Tubule
65% - 321If Arial Stretch Receptors are activated what is released?Atrial Natriuretic Factor
- 322How much material leaves the body per day?150mL
- 323How much of the 500mL of material processes is reabsorbed in the L. Intestine?350mL
- 324What allows food to enter the stomach when relaxed/open?Cardiac Sphincter
- 325What dictates when food can enter the S. Intestine and how much food can enter at one time?Gastroenteric Reflex
50mL - 326What is the volume of the stomach when empty?50mL
- 327What is the volume of the stomach when full?1000mL
- 328What is the cause of diarrhea?too little water is removed
- 329What type of cells are produced in the Portal System?Hepatocytes: Metabolism
Kupffer Cells: Macrophages - 330What allows for chemical processing in the stomach?Acid and Enzymes
- 331What is the maximum renal clearance?625ml/min
- 332What is the osmolarity of the cortex?300mosm
- 333How many nephron are there per kidney?1,000,000
- 334What categorizes infertility?20,000,000 semen/mL
- 335How many sperm are there per ejaculation?300,000,000
- 336What percentage of testes mass is made up of the Seminferous Tubules?80%
- 337What do Leydig Cells produce?Androgen and Testosterone
- 338What do bulbourethral glands produce?mucus for lubrication
- 339What is produced by the seminal vesicles?fructose and prostiglandins to provide energy for semen and inhibit smooth muscle contractions
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- Fichas sobre Human Physiology Final, creado por dchristerson89 el 10/12/2013.
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