Question 1
Question
How do lipid-soluble molecules (like steriods) generally move thru cell membranes?
Question 2
Question
Placing a cell in _____ is most likely to cause a decrease in cell volume?
Answer
-
a hypotonic bathing solution
-
a hypertonic bathing solution
-
acidic rain water
-
distilled water
-
alkaline (or basic) rain water
Question 3
Question
The dominant fiber type in dene connective tissue
Answer
-
epithelin
-
fibrin
-
collagen
-
fribrillin
-
elastin
Question 4
Question
The alveoli of the lungs are made of
Question 5
Question
Epithelium is connected to underlying connective tissue by
Answer
-
a basement membrane
-
junctional complexes
-
intercellular glue
-
a fibrous netting
-
reticular fibers
Question 6
Question
All of the following are functions of epithelial tissues EXCEPT
Answer
-
Providing sensation
-
Controlling permeability
-
Producing specialized secretions
-
Providing physical protection
-
Providing connectivity between organs
Question 7
Question
The inter-cellular connection involving interlocking membrane proteins are
Answer
-
Tight junctions
-
Gap junctions
-
Desmosomes
-
Synaptisomes
-
Basement proteins
Question 8
Question
Mammary glands are most closely associated with ____ secretion
Answer
-
Holocrine
-
Apocrine
-
Merocrine
-
Endocrine
-
Acini Tubules
Question 9
Question
Adipocytes is most closely associated with
Question 10
Question
When a fair-skinned person blushes, why does his or her skin turn red?
Answer
-
The blood supply to the skin decreases
-
The blood supply to the skin increases
-
The number of red melanocytes in the skin increases
-
Melanocytes increase the production of red pigments
-
Increased heat causes the skin to turn red
Question 11
Question
The reproducing cells of the skin are located in the
Answer
-
Surface
-
Stratum corneum
-
Stratum lucidum
-
Stratum spinosum
-
Stratum germinativum
Question 12
Question
An epidermal layer found only on the skin of the palms of the hands and the soles of the feet is the
Answer
-
Stratum spinosum
-
Stratum granulosum
-
Stratum germinativum
-
Stratum corneum
-
Stratum lucidum
Question 13
Question
According to your instructor, deadly melanoma is associated with _____
Answer
-
Artificial sweeteners
-
Artificial food coloring
-
Chronic stress
-
Tanning booths
-
Improper diet
Question 14
Question
What are the layers associated with the Dermis?
Answer
-
Papillary and subcutaneous
-
Subcutaneous and reticular
-
Papillary and reticular
-
Reticular and accessory
-
Accessory and subcutaneous
Question 15
Question
Which Epithelial Tissue (E.T.) type is most closely associated with the epidermis?
Question 16
Question
Which three functional components underlie how responses to stimuli work?
Answer
-
Receptor, effector, motor
-
Motor, control center, feedback
-
Effector, control center, receptor
-
Feedback, effector, receptor
-
Control center, motor, feedback
Question 17
Question
From the choices below, identify the smallest functional unit considered "alive"
Answer
-
An animal
-
A cell
-
A membrane
-
An ion channel
-
an enzyme
Question 18
Question
Each of the following are cell types in connective tissue EXCEPT:
Answer
-
Muscle Cells
-
Mast Cells
-
Mesenchymal Cells
-
Microphages
-
Melanocytes
Question 19
Question
Two equal volumes (L and R) of water are separated by a screen with 1mm sized pores. A little sugar is added only to Side L. What would you see the next day?
Answer
-
Side L would have more sugar AND less water than side R
-
Side R would have more sugar AND less water than side L
-
Side L would have less sugar AND less water than side R
-
Both sides would have the same amount of sugar AND water
-
Both side would have the same amount of water, but Side L more sugar
Question 20
Question
If a substance has a pH that is less than 7, it is
Answer
-
Acidic
-
Basic
-
Alkaline
-
Buffered
-
Both B and C are correct
Question 21
Question
Which description below best describes all homeostatic processes?
Answer
-
Baseline values do not deviate over time
-
Negative feedback is essential
-
Positive feedback is essential
-
Baseline values are uncontrolled
-
Homeostasis is not auto regulated
Question 22
Question
Support, protection of soft tissues, mineral storage, and blood formation are functions of which system?
Answer
-
Skeletal
-
Connective tissue
-
Integumentary
-
Epithelial tissue
-
None of the above
Question 23
Question
The increasingly forceful labor contractions that lead to childbirth exemplify
Answer
-
Receptor activation
-
Effector shutdown
-
Positive feedback
-
Negative feedback
-
None of these
Question 24
Question
When body temperature falls, a center in the brain initiates physiological changes to increase body temperature. This regulation mechanism is an example of
Question 25
Question
Your instructor presented the idea that all physiology is finally (ultimately, at its most basic and rock bottom level) reducible to:
Answer
-
Histology
-
Cytology
-
Microbiology
-
Biochemistry
-
Physics
Question 26
Question
An unstable isotope that emits subatomic particles spontaneously is called
Answer
-
A cation or anion
-
An X-ray
-
A gamma ray
-
A radioisotope
-
A death ray
Question 27
Question
The most common fat found in the body is in the form of
Answer
-
Steroids
-
Adenosine monophosphate
-
Adenosine triphosphate
-
Monoglycerides
-
Trigylcerides
Question 28
Question
A polysaccharide that is formed in the liver and muscle to store glucose is
Answer
-
Glycose
-
Glucagon
-
Glycogen
-
Glycocalyx
-
Starch
Question 29
Question
Glycolysis and Glucogenolysis are prime and classic examples of
Answer
-
Anabolism
-
Buffering process
-
Catabolism
-
Dynamic equilibria
-
Exchange reactions
Question 30
Question
What pathology is caused by a failure to convert phenylalanine to tyrosine
Answer
-
Albinism
-
PKU
-
Marfan's syndrome
-
Galactosemia
-
Psoriasis
Question 31
Question
If the amount of sodium ion in blood plasma decreases
Answer
-
The blood colloidal pressure will increase
-
The blood colloidal pressure will decrease
-
The blood osmotic pressure will stay the same
-
The blood osmotic pressure will decrease
-
The blood osmotic pressure will increase
Question 32
Question
Facilitated diffusion differs from ordinary diffusion in that facilitated diffusion
Answer
-
Limits the rate of molecular movement by limiting the number of available carrier molecules
-
Moves molecules from area of higher concentration to lower concentration
-
never eliminates the concentration gradient
-
Does not limit the rate of molecular movement by the number of available carrier molecules
-
Expends no ATP
Question 33
Question
Which suborganelle is most associated with protein synthesis in a cell?
Question 34
Question
During relaxation, muscles return to their original length NOT because of
Question 35
Question
At rest, active sites on the actin are blocked by
Answer
-
Myosin molecules
-
Calcium ions
-
ATP molecules
-
Troponin molecules
-
Tropomyosin molecules
Question 36
Question
Tropomyosin wraps (entwines) itself around which other muscle element?
Answer
-
Myosin
-
F-actin
-
Troponin
-
Titin
-
H-band
Question 37
Question
The 'power stroke' in skeletal muscle contraction is directly associated with:
Answer
-
Myosin head pivots at joint pulling action
-
AP movement down t-tubule
-
Calcium release from SR
-
AP movement along sarcolemma
-
Calcium binding to troponin
Question 38
Question
We can distinguish between sensations originating in different body areas because
Answer
-
Receptors from each body region synapse in specific brain regions
-
Sensory neurons carry only one type of information
-
Incoming sensory information is first assessed by the thalamus
-
Different types of sensory receptors produce different types of APs
-
Sensory neurons in different parts of the body are different from each other.
Question 39
Question
Diffusion across the Arachnoid Granulations return excess CSF to
Answer
-
The third ventricle
-
Arterial circulation
-
Venous circulation
-
The fourth ventricle
-
The central canal
Question 40
Question
Soon after a person dies (and loses all ATPs), Their skeletal muscles:
Answer
-
Flex with significant force
-
Stiffen from actin+myosin binding
-
Extend with significant force
-
Get smaller in volume
-
Get larger in volume
Question 41
Question
Each of the following are characteristics of smooth muscles EXCEPT:
Question 42
Question
Which of the following is responsible for reciprocal inhibition?
Question 43
Question
Arrange the following steps involved in a reflex arc into proper sequence
a. activation of a sensory neuron
b. activation of a motor neuron
c. response by an effector
d. arrival of a stimulus and activation of a receptor
e. information processing
Answer
-
D,E,A,B,C
-
A,B,C,E,D
-
D,A,B,C,E
-
E,B,C,D,A
Question 44
Question
People perceive different intensities of light when their brains receive different ___
Answer
-
Action potentials sned to various regions of their brain
-
Shapes of action potentials
-
Sizes of action potentials
-
Wavelengths of light
-
Rate of action potentials
Question 45
Question
Part of the brain most closely associated with emotions (e.g. pleasure, hunger) is:
Answer
-
Cerebrum
-
Thalamus
-
Hypothalamus
-
Cerebellum
-
Medulla oblongata
Question 46
Question
The cell bodies of the sympathetic preganglionic neurons are in the:
Answer
-
Lateral gray horns of T1 through L2 region of the spinal cord
-
Brain stem and sacral areas of the spinal cord
-
Lateral gray horns of the cervical region of the spinal cord
-
Anterior gray horns of the entire spinal cord
-
Lateral gray horns of the entire spinal cord
Question 47
Question
Activity of the parasympathetic ANS mainly
Answer
-
Is directed towards different sets of organs than the sympathetic ANS
-
Is involved in "fight or flight" responses
-
Increases when someone turns into the "hulk"
-
Increase blood flow to the skeletal muscles
-
Increases while calmly digesting dinner
Question 48
Question
The cell bodies of the parasympathetic preganglionic neurons are found in the:
Answer
-
Lateral gray horns of T1 through L2 region of the spinal cord
-
Brain stem and lateral gray horns of the sacral areas of the spinal cord
-
Lateral gray horns of the cervical region of the spinal cord
-
Anterior gray horns of the entire spinal cord
-
Lateral gray horns of the entire spinal cord
Question 49
Question
Of the 31 pairs of spinal nerves, each one monitors a particular ____
Question 50
Question
Large, multinucleated cells that can dissolve the bony matrix are termed
Answer
-
Osteocytes
-
Osteoclasts
-
Osteoblasts
-
Stem Cells
-
Chondrocytes
Question 51
Question
Appositional growth in bones is most closely related to growth in:
Answer
-
Bone length
-
Osteoclasts
-
Epiphyseal conversion
-
Bone diameter
-
Bone turnover
Question 52
Question
____ decreases the concentration of calcium in the blood
Answer
-
Calcitonin
-
Calcitrol
-
Parathyroid hormone
-
Vitamin D
-
Both B and D are correct
Question 53
Question
The "shaft" of a long bone is most closely associated with the
Answer
-
Epiphysis
-
Diaphysis
-
Periosteum
-
Endochondrial
-
Appositional
Question 54
Question
Arrange the steps in the generation of an action potential into proper sequence
a. sodium channels inactivated
b. potassium channels open and potassium moves out of the cell
c. sodium channels regain their normal properties
d. graded depolarization brings area of excitable membrane to threshold
e. a temporary hyperpolarization occurs
f. sodium channel activation occurs
g. sodium ions enter the cell and depolarization occurs
Answer
-
d,f,g,a,b,c,e
-
a,b,e,c,d,f,g
-
b,d,e,f,g,a,c
-
d,a,g,e,f,b,c
-
d,e,a,c,b,f,g
Question 55
Question
During saltatory conduction, (APs=Action potentials)
Answer
-
APs move in all directions along an axon
-
Local currents depolarize adjacent areas of membrane so that APs continue to form along the membrane
-
APs produce a local current that is strong enough to spread along the length of the axon
-
Local potentials produce a continuous outward flow of potassium ions
-
APs occur between successive nodes along the length of stimulated axon
Question 56
Question
Multiple Sclerosis (MS) is associated with a loss of myelin. MS may then involve:
Answer
-
Oligodendrocytes
-
Astrocytes
-
Microglia
-
Ependymal
-
Renshaw neurons
Question 57
Question
The later part of the rising (depolarizing) phase of the action potential is mediated by a(n) ____ ion membrane channel
Answer
-
Ligand-gated
-
Voltage-gated
-
Leak
-
Active pump
-
Facilitated diffusion
Question 58
Question
Which of the following is TRUE of a graded potential?
Answer
-
The potential is propagated with a constant magnitude
-
The potential is all-or-none
-
Stimulus causes ion channels to open changing membrane permeability
-
No summation of potentials occurs
-
The potential has a refractory period
Question 59
Question
Opening of Na+ channels in the membrane of a neuron normally results in
Question 60
Question
A resting (trans)membrane potential of a cell has a value of approximately
Question 61
Question
What prevents the action potential from traveling in both directions down an axon?
Answer
-
The resting potential
-
Ligand-gated channels
-
Graded potentials
-
The refractory period
-
Leak channels
Question 62
Question
A person whose genetic makeup or training makes them a better SPRINTER than a marathon runner has ___ in their leg muscles
Answer
-
More red muscle fibers
-
More white muscles fibers
-
More noncontractile fibers
-
Equal amounts of red and white m. fibers
-
Less myoglobin than hemoglobin
Question 63
Question
The smooth but steady increase in muscle tension (sub maximally) produced by increasing the number of active motor units is called:
Answer
-
Recruitment
-
Tetany
-
A twitch
-
Relaxation
-
Recovery
Question 64
Question
____ is involved in BOTH synaptic transmission and excitation-contraction coupling?
Answer
-
Mysoin
-
Chloride
-
Calcium
-
Tropomyosin
-
T-tubules
Question 65
Question
Which striated muscle band is directly adjacent to the Z-line (or Z-disk)?
Answer
-
A-band
-
H-band
-
T-band
-
M-band
-
I-band
Question 66
Question
Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium are functions of the
Answer
-
Cerebrum
-
Midbrain
-
Pons
-
Cerebellum
-
Medulla
Question 67
Question
Cardiac output is equal to:
Answer
-
difference between diastolic volume and systolic volume
-
product of heart rate and stroke volume
-
difference between stroke volume and rest and during exercise
-
stroke volume minus systolic volume
-
product of heart rate and BP
Question 68
Question
According to Frank Starling's heart law, cardiac output is directly related to
Question 69
Question
Red blood cell production is regulated primarily by the hormone
Answer
-
Thymosin
-
Angiotensin
-
Erythropoietin (EPO)
-
ACTH
-
LH
Question 70
Question
The part of the cardiac cycle associated with relaxation of the ventricles and filling of the atria is:
Question 71
Question
An example of a hormone that functions as a vasoconstritor is:
Answer
-
histamine
-
prostoglandin
-
bradykinin
-
serotonin
-
adrenaline
Question 72
Question
Which change will NOT result in increased blood flow to a tissue?
Answer
-
increased blood volume
-
decreased vessel diameter
-
increased blood pressure
-
decreased peripheral resistance
-
relaxation of precapillary sphincters
Question 73
Question
Which of the responses below is NOT true of Kwashiorkor Edema?
Answer
-
involves a blockage of lymphatic ducts
-
involves a lowering or plasma protein
-
involves an increase of interstitial volume
-
involves poor nutrition
-
involves alterations in osmotic pressure
Question 74
Question
Excess secretion of growth hormone AFTER puberty will cause
Answer
-
dwarfism
-
cancer
-
gigantism
-
acromegaly
-
diabetes
Question 75
Question
STEROIDS ARE KNOWN TO BE RELEASE INTO THE BLOODSTREAM FROM THE
Answer
-
hypothalamus
-
anterior pituitary
-
posterior pituitary
-
pancreas
-
adrenal cortex
Question 76
Question
The hormone that is antagonist of calcitonin is
Answer
-
insulin
-
glucagon
-
growth hormone
-
parathyroid hormone
-
Thyroxin (T4)
Question 77
Question
Excessive immune responses to antigens are
Question 78
Question
Histamine increases blood flow and vascular permeability. This would account for which of the following changes that occur during inflammation?
Answer
-
redness of the inflamed tissue
-
swelling of the inflamed tissue
-
heat of the inflamed tissue
-
the localization of proteins and cells necessary for body defense
-
all of the above
Question 79
Question
Blood osmotic pressure is most affected by changes in the
Answer
-
concentration of plasmas sodium ions
-
concentration of plasma waste glucose
-
concentration of plasma waste products
-
concentration of plasma proteins
-
number of white blood cells
Question 80
Question
In response to hemorrhage, there is a
Answer
-
mobilization of the venous reserve
-
increased parasympathetic stimulation of the heart
-
decreased sympathetic stimulation
-
decreased vasomotor tone and increased parasympathetic stimulation of heart
-
decreased vasomotor tone and decreased sympathetic stimulation of the heart
Question 81
Question
Edema would be likely to form
Answer
-
the concentration of protein in the blood increases
-
hemorrhage occurs
-
the heart insufficient pressure pumping
-
blood hydrostatic pressure in the capillary decreases outward flow of fluid
-
blood hydrostatic pressure in capillary is less than blood osmotic pressure
Question 82
Question
The cells responsible for the production of circulating antibodies are
Answer
-
Natural killer cells
-
plasma cells
-
helper T cells
-
cytotoxic T cells
-
supressor T cells
Question 83
Question
The body's largest lymphatic tissue is the:
Answer
-
thyroid
-
thymus
-
thalamus
-
pancreas
-
spleen
Question 84
Question
With a patient being thin, nervous, with protruding eye (balls), you are thinking that
Answer
-
they suffer from Graves disease
-
they suffer from myxedema
-
they suffer from cretinism
-
they suffer from acromegaly
-
they suffer from hyroencephaly
Question 85
Question
Depolarization in the cochlear hair cell will occur if the sterocilia moves (bends)
Answer
-
up towards the tectoral membrane
-
down towards the basilar membrane
-
sideways towards the taller sterocilia
-
sideways towards the shorter sterocilia
-
back and forth sideways (both C and D)
Question 86
Question
Different pitches (frequencies) of sounds are discriminated in cochlea through
Answer
-
stimulating/vibrating different types/classes of sterocilia
-
stimulating/vibrating different classes of hair cells
-
stimulating/vibrating different types/ classes of ion channels
-
stimulating/vibrating different auditory canals or membranes
-
stimulating/vibrating different patches of the basilar membrane
Question 87
Question
The round-ish lens shape in the most closely associated with focusing on a
Answer
-
bright object
-
dim object
-
close object
-
distant object
-
both B and D are correct
Question 88
Question
A drifting blood clot is called an
Answer
-
embolus
-
thrombus
-
plaque
-
coagulant
-
platelet plug
Question 89
Question
The left and right pulmonary veins carry blood to the
Answer
-
right atrium
-
right ventricle
-
left atrium
-
left ventricle
-
lungs
Question 90
Question
The heart sound is heard when
Question 91
Question
Aged and broken down erythrocytes are broken down by the ____
Answer
-
spleen
-
yellow bone marrow
-
kidneys
-
digestive tract
-
thymus gland
Question 92
Question
The heart valve occurring between the LA and LV is called the ____ valve
Answer
-
aortic (semilunar)
-
pulmonary semilunar
-
triscuspid
-
aortic tricuspid
-
mitral (bicuspid)
Question 93
Question
Insulin-dependent diabetes mellitus is also known as
Answer
-
non insulin dependent
-
type I
-
type II
-
type III
-
diabetes insipidus
Question 94
Question
The sclera is most closely associated with the
Question 95
Question
Anemia is most closely associated with
Answer
-
high levels of oxygen in tissues
-
hematocrit value of less than 40
-
low levels of carbon dioxide in tissues
-
hematocrit value of more than 40
-
hematocrit value of more than 50
Question 96
Question
The Pitiarty hormeon that mots specifically promotes egg development in ovaries and sper developmetn in testes is
Answer
-
TSH
-
ACTH
-
FSH
-
prolactin
-
GH (or HGH) (or HGHRH)
Question 97
Question
In human photoreceptors, to what does "dark current" refer?
Answer
-
The movement of sodium ion INTO photoreceptors in complete darkness
-
The movement of sodium ions OUT OF photoreceptors in complete darkness
-
The movement of cGMP INTO photoreceptors in complete darkness
-
The movement of cGMP OUT OF photoreceptors in complete darkness
-
The movement of
Question 98
Question
The structure that separates the cholera duct from the tympanic duct is the
Answer
-
Tectorial membrane
-
basilar membrane
-
vestiblar duct
-
organ of Corti
-
tympanic membrane
Question 99
Question
An inability for the body to clot (prevent flow out of) blood is most closely associated with
Answer
-
thalassemia
-
hemophilia
-
diapedesis
-
hemostasemia
-
leukemia