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Physio Quiz
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Questions in this quiz (24)
1Which of the following is NOT a step in long - term potentiation of glutamertergic synapse?
- AHigh frequency of action potentials in presynaptic cell
- BRelease of glutamate
- CGlutamate binds to Na and Ca channels
- DNa and Mg enter the post-synaptic cell
- ESecondary messages induce long - lasting increase in glutamate receptors and sensitivity
2If the thalamus was not functioning to its full capacity, which sense would be least affected?
- AOlfactory
- BHearing
- CVision
- DVestibular
- ETaste
3In the presence of light, the bipolar cells will become _________ in the ON Pathway, while the bipolar cells would become____________ in the OFF Pathway.
- AHyperpolarize; Hyperpolarize
- BDepolarized; Hyperpolarized
- CDepolarize; Depolarize
- DHyperpolarize; Depolarize
- ENone of the above
4If the lateral inhibition mechanism was not functional in your sensory system, which of the following would not occur?
- Alocalization of a stimulus sit
- Bdecrease in stimulus duration
- Csummation of afferent neuron action potentials
- Damplification of a stimulus
- ENone of the above
5If the hair cells in the ampulla of the ear were mutated, what would happens to the vestibular system?
- ALoss of eye muscle control
- BLoss of maintenance of upright posture and balance
- CLoss of conscious awareness of the position or acceleration of the body
- DNone of the above
- EAll of the above
6The sensation of pain in the left arm when one is having a heart attack is known as:
- AHyperalgesia
- Bb. Hypersensitivity
- Cc. Pain localization
- Dd. Referred Pain
- Ee. A mutation in the nociceptors
7In order for the skeletal muscle fiber to relax _____ must occur.
- Aa. Hydrolysis of ATP by Na+/K+-ATPase in the plasma membrane
- Bb. Binding of ATP to myosin
- Cc. Hydrolysis of ATP by Ca2+-ATPase in the sarcoplasmic reticulum
- Dd. Hydrolysis of ATP by myosin
8How does the excitation (depolarization) of the cardiac nodes flow through the atrial and
ventriole portions of the heart? (from start to finish)- Aa. AV node, SA node, His bundle, Purkinje fibers
- Bb. SA node, Av node, His bundle, Purkinje fibers
- Cc. Av node, SA node, Purkinje fibers, His bundle
- Dd. SA node, AV node, Purkinje fibers, His bundle
9In the cardiac system, decreasing blood pressure would also affect which of the following?
- Aa. increase net filtration pressure
- Bb. increase πC
- Cc. decrease net filtration pressure
- Dd. decrease πC
10In the cardiac system, if arterial pressure is decreased, what is the body’s way to
compensate for this?- Athere is a decrease in baroreceptor firing, which increases sympathetic
response - Bb. there is an increase in baroreceptor firing, which increases sympathetic response
- Cc. there is a decrease in baroreceptor firing, which increases parasympathetic response
- Dd. there is a decrease in baroreceptor firing, which decrease sympathetic response
- Athere is a decrease in baroreceptor firing, which increases sympathetic
11When at the top of Mt. Everest, less oxygen is available and therefore PO2 levels are decreased. PO2 levels are sensed by the ________ which causes ________ firing and contraction of respiratory muscles which attempts to return PO2 levels back to normal.
- Aa. Central chemoreceptors, increased
- Bb. Peripheral chemoreceptors, increased
- Cc. Central chemoreceptors, decreased
- Dd. Peripheral chemoreceptors, decreased
12Reduction in surfactant in the alveolar cells would:
- A1) Decrease compliance within the lung, making it harder to expand
- B2) Increase surface tension at the air-water interfaces within the alveoli
- C3) Increase the cohesive forces between water molecules
- D4) Increase compliance within the lung, making it harder to expand
13The afferent arteriole in the kidney has dilated. What effects does this have on the P_GC (glomerular capillary pressure) and GFR (glomerular filtration rate)? (Figure 14.9)
- AA. Decreased P_GC; increased GFR
- BB. Increased P_GC; increased GFR
- CC. Decreased P_GC; decreased GFR
- DD. Increased P_GC; decreased GFR
- EE. None of the above
14If an individual experiences an increase in sodium and water reabsorption, it would result from which of the following:HC
- AA. A decrease in aldosterone secretion
- BB. An increase in aldosterone secretion
- CC. A decrease in plasma angiotensin II
- DD. An increase in arterial pressure
15One of the negative feedback systems of high [HCl] in relation to cephalic and gastric control include:
- AA. Gastrin secretion on the parietal cells
- BB. Histamine secretion on the parietal cells
- C*C. Somatostatin secretion on the parietal cells
- DD. Luminal distension of amino acids and peptides
- EE. Enteric neural activity on the parietal cells
16How is increased acidity in the duodenum hormonally regulated?
- AA. Increased neural activity affects the parietal cell to increase bicarbonate secretion.
- BB. Bicarbonate is secreted from the small intestine, which causes the pancreas to secrete selectin.
- C*C. Secretin is secreted from the small intestine, which causes the pancreas to secrete bicarbonate.
- DD. CCK is secreted from the duodenum, inhibiting acid secretion from the stomach
17What is the fate of ingested amino acids in excess of those needed to maintain a stable rate of protein turnover?
- Aa. Increase in body protein
- Bb. Converted to glycogen
- Cc. Converted to carbohydrate or fat
- Dd. Transported via the blood to adipose tissue
18What is the first line of defense in the maintenance of the plasma glucose concentration within a homeostatic range?
- AA. Hepatic glycogenolysis
- BB. Increase GLUT-4 concentration
- CGluconeogenesis
- DLipolysis
- EE. none of the above
19The catabolism of triglycerides in adipose tissue yields what?
- AA. Fatty acids only
- BB. Glycerol only
- CC. Fatty acids and glycerol
- DD. Sterols and glycerol
- EE. none of the above
20A few hours into post absorptive state, through which pathway are proteins converted into glucose ?
- AGlycolysis
- BGluconeogenesis
- CC. Oxidative Phosphorylation
- DD. Alpha-keto acid pathway
- EE. none of the above
21Besides plasma concentration of glucose, what other factors stimulate insulin secretion
- AIncretins
- BExercise
- CC. Increased amino acid concentration
- DD. A and C
- EE. All of the above
22How does the liver respond to decreased levels of plasma insulin?
- Aa. Increase glucose release; increase ketone synthesis
- Bb. Increase glucose synthesis; Increase ketone release
- Cc. Decrease glucose release; decrease ketone synthesis
- Dd. Decrease glucose synthesis; decrease ketone release
23In skeletal muscle, as insulin secretion increases,
- Aa) blood glucose increases
- Bb) blood fatty acids increase
- Cc) protein synthesis increases
- Dd) blood amino acids increase
24Which factor(s) do NOT cause calorigenic effect
- AAcetylcholine
- BB. Thyroid hormones (T3 and T4)
- CEpinephrine
- DD. B and C
- EE. None of the above
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- Final physio questions
- Author
- Tina Truong
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- English
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