Practice Questions

TLS Online TPP Program

#Question id: 20284

What is the importance of C-peptide in proinsulin?

#Unit 7. System Physiology – Animal

It plays an important role in the correct folding of insulin and the formation of disulfide bridge
Because proinsulin and C peptide have virtually insulin activity
Patients with type 1 diabetes who are unable to produce insulin will usually have greatly increased levels of C peptide.
It elicits activation of at least one of these enzyme systems, sodium-potassium ATPase or endothelial nitric oxide synthase.

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TLS Online TPP Program

#Question id: 20275

#Unit 7. System Physiology – Animal

Vasopressin has two actions, one on the kidney and the other on vascular smooth muscle, Contraction of vascular smooth muscle are mediated by different receptors, different intracellular mechanisms, and different second messengers,

a. The receptor for ADH on vascular smooth muscle is a V1 receptor

b. The receptor for ADH on the vascular smooth muscle is a V2 receptor

c. The second messenger for this action is IP3/Ca2+

d. The second messenger is cAMP.

Which of the above is/are correct?

TLS Online TPP Program

#Question id: 20276

#Unit 7. System Physiology – Animal

Central diabetes insipidus is caused by failure of the posterior pituitary to secrete ADH and the following statements pertain to that disorder:

A. excretion of large volumes of dilute urine

B. the urine cannot be concentrated

C. produces large volumes of dilute urine

D. increased serum osmolarity

E. circulating levels of ADH are high

Which of the following is the correct combination of the statements given above?

TLS Online TPP Program

#Question id: 20277

#Unit 7. System Physiology – Animal

Which is structurally similar to growth hormone?

d. Bromocriptine

Which of the above is/are correct?

TLS Online TPP Program

#Question id: 20278

#Unit 7. System Physiology – Animal

What type of protein is human growth hormone?

TLS Online TPP Program

#Question id: 20279

#Unit 7. System Physiology – Animal

Which one of the following statements is true with regard to Growth Hormone Secretion?

a. Growth hormone is secreted in a pulsatile pattern.

b. Growth hormone secretory rates are constant over a lifetime.

c. After puberty, the rate of growth hormone secretion declines to a stable level.

d. The highest rates of growth hormone secretion occur during puberty, and the lowest rates occur in senescence.

Which of the following is the correct combination of the statements given above?

TLS Online TPP Program

#Question id: 20280

#Unit 7. System Physiology – Animal

What stimulates growth hormone release?