Tina Truong
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Final physio questions

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Tina Truong
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Physio Quiz

Question 1 of 24

1

Which of the following is NOT a step in long - term potentiation of glutamertergic synapse?

Select one of the following:

  • High frequency of action potentials in presynaptic cell

  • Release of glutamate

  • Glutamate binds to Na and Ca channels

  • Na and Mg enter the post-synaptic cell

  • Secondary messages induce long - lasting increase in glutamate receptors and sensitivity

Explanation

Question 2 of 24

1

If the thalamus was not functioning to its full capacity, which sense would be least affected?

Select one of the following:

  • Olfactory

  • Hearing

  • Vision

  • Vestibular

  • Taste

Explanation

Question 3 of 24

1

In the presence of light, the bipolar cells will become _________ in the ON Pathway, while the bipolar cells would become____________ in the OFF Pathway.

Select one of the following:

  • Hyperpolarize; Hyperpolarize

  • Depolarized; Hyperpolarized

  • Depolarize; Depolarize

  • Hyperpolarize; Depolarize

  • None of the above

Explanation

Question 4 of 24

1

If the lateral inhibition mechanism was not functional in your sensory system, which of the following would not occur?

Select one of the following:

  • localization of a stimulus sit

  • decrease in stimulus duration

  • summation of afferent neuron action potentials

  • amplification of a stimulus

  • None of the above

Explanation

Question 5 of 24

1

If the hair cells in the ampulla of the ear were mutated, what would happens to the vestibular system?

Select one of the following:

  • Loss of eye muscle control

  • Loss of maintenance of upright posture and balance

  • Loss of conscious awareness of the position or acceleration of the body

  • None of the above

  • All of the above

Explanation

Question 6 of 24

1

The sensation of pain in the left arm when one is having a heart attack is known as:

Select one of the following:

  • Hyperalgesia

  • b. Hypersensitivity

  • c. Pain localization

  • d. Referred Pain

  • e. A mutation in the nociceptors

Explanation

Question 7 of 24

1

In order for the skeletal muscle fiber to relax _____ must occur.

Select one of the following:

  • a. Hydrolysis of ATP by Na+/K+-ATPase in the plasma membrane

  • b. Binding of ATP to myosin

  • c. Hydrolysis of ATP by Ca2+-ATPase in the sarcoplasmic reticulum

  • d. Hydrolysis of ATP by myosin

Explanation

Question 8 of 24

1

How does the excitation (depolarization) of the cardiac nodes flow through the atrial and
ventriole portions of the heart? (from start to finish)

Select one of the following:

  • a. AV node, SA node, His bundle, Purkinje fibers

  • b. SA node, Av node, His bundle, Purkinje fibers

  • c. Av node, SA node, Purkinje fibers, His bundle

  • d. SA node, AV node, Purkinje fibers, His bundle

Explanation

Question 9 of 24

1

In the cardiac system, decreasing blood pressure would also affect which of the following?

Select one of the following:

  • a. increase net filtration pressure

  • b. increase πC

  • c. decrease net filtration pressure

  • d. decrease πC

Explanation

Question 10 of 24

1

In the cardiac system, if arterial pressure is decreased, what is the body’s way to
compensate for this?

Select one of the following:

  • there is a decrease in baroreceptor firing, which increases sympathetic
    response

  • b. there is an increase in baroreceptor firing, which increases sympathetic response

  • c. there is a decrease in baroreceptor firing, which increases parasympathetic response

  • d. there is a decrease in baroreceptor firing, which decrease sympathetic response

Explanation

Question 11 of 24

1

When 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.

Select one of the following:

  • a. Central chemoreceptors, increased

  • b. Peripheral chemoreceptors, increased

  • c. Central chemoreceptors, decreased

  • d. Peripheral chemoreceptors, decreased

Explanation

Question 12 of 24

1

Reduction in surfactant in the alveolar cells would:

Select one of the following:

  • 1) Decrease compliance within the lung, making it harder to expand

  • 2) Increase surface tension at the air-water interfaces within the alveoli

  • 3) Increase the cohesive forces between water molecules

  • 4) Increase compliance within the lung, making it harder to expand

Explanation

Question 13 of 24

1

The 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)

Select one of the following:

  • A. Decreased P_GC; increased GFR

  • B. Increased P_GC; increased GFR

  • C. Decreased P_GC; decreased GFR

  • D. Increased P_GC; decreased GFR

  • E. None of the above

Explanation

Question 14 of 24

1

If an individual experiences an increase in sodium and water reabsorption, it would result from which of the following:HC

Select one of the following:

  • A. A decrease in aldosterone secretion

  • B. An increase in aldosterone secretion

  • C. A decrease in plasma angiotensin II

  • D. An increase in arterial pressure

Explanation

Question 15 of 24

1

One of the negative feedback systems of high [HCl] in relation to cephalic and gastric control include:

Select one of the following:

  • A. Gastrin secretion on the parietal cells

  • B. Histamine secretion on the parietal cells

  • *C. Somatostatin secretion on the parietal cells

  • D. Luminal distension of amino acids and peptides

  • E. Enteric neural activity on the parietal cells

Explanation

Question 16 of 24

1

How is increased acidity in the duodenum hormonally regulated?

Select one of the following:

  • A. Increased neural activity affects the parietal cell to increase bicarbonate secretion.

  • B. Bicarbonate is secreted from the small intestine, which causes the pancreas to secrete selectin.

  • *C. Secretin is secreted from the small intestine, which causes the pancreas to secrete bicarbonate.

  • D. CCK is secreted from the duodenum, inhibiting acid secretion from the stomach

Explanation

Question 17 of 24

1

What is the fate of ingested amino acids in excess of those needed to maintain a stable rate of protein turnover?

Select one of the following:

  • a. Increase in body protein

  • b. Converted to glycogen

  • c. Converted to carbohydrate or fat

  • d. Transported via the blood to adipose tissue

Explanation

Question 18 of 24

1

What is the first line of defense in the maintenance of the plasma glucose concentration within a homeostatic range?

Select one of the following:

  • A. Hepatic glycogenolysis

  • B. Increase GLUT-4 concentration

  • Gluconeogenesis

  • Lipolysis

  • E. none of the above

Explanation

Question 19 of 24

1

The catabolism of triglycerides in adipose tissue yields what?

Select one of the following:

  • A. Fatty acids only

  • B. Glycerol only

  • C. Fatty acids and glycerol

  • D. Sterols and glycerol

  • E. none of the above

Explanation

Question 20 of 24

1

A few hours into post absorptive state, through which pathway are proteins converted into glucose ?

Select one of the following:

  • Glycolysis

  • Gluconeogenesis

  • C. Oxidative Phosphorylation

  • D. Alpha-keto acid pathway

  • E. none of the above

Explanation

Question 21 of 24

1

Besides plasma concentration of glucose, what other factors stimulate insulin secretion

Select one of the following:

  • Incretins

  • Exercise

  • C. Increased amino acid concentration

  • D. A and C

  • E. All of the above

Explanation

Question 22 of 24

1

How does the liver respond to decreased levels of plasma insulin?

Select one of the following:

  • a. Increase glucose release; increase ketone synthesis

  • b. Increase glucose synthesis; Increase ketone release

  • c. Decrease glucose release; decrease ketone synthesis

  • d. Decrease glucose synthesis; decrease ketone release

Explanation

Question 23 of 24

1

In skeletal muscle, as insulin secretion increases,

Select one of the following:

  • a) blood glucose increases

  • b) blood fatty acids increase

  • c) protein synthesis increases

  • d) blood amino acids increase

Explanation

Question 24 of 24

1

Which factor(s) do NOT cause calorigenic effect

Select one of the following:

  • Acetylcholine

  • B. Thyroid hormones (T3 and T4)

  • Epinephrine

  • D. B and C

  • E. None of the above

Explanation

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