TLS Online TPP Program

#Question id: 30058


The dicrotic notch on the aortic pressure curve is caused by:

#Unit 7. System Physiology – Animal
  1. closure of the mitral valve
  2. closure of the tricuspid valve
  3. closure of the aortic valve
  4. opening of the aortic valve
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TLS Online TPP Program

#Question id: 34142

#Unit 7. System Physiology – Animal

Somatostatin inhibits the secretion of following hormones, EXCEPT?

TLS Online TPP Program

#Question id: 34143

#Unit 7. System Physiology – Animal

Which of the following best explains how normal plasma oxytocin levels at the onset of labor can still result in powerful uterine contractions?

TLS Online TPP Program

#Question id: 34144

#Unit 7. System Physiology – Animal

Select A if the item is associated with (a), B if the item is associated with (b), C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b).
(a) V1A vasopressin receptors
(b) V2 vasopressin receptors
I. Activation of Gs
II. Vasoconstriction
III. Increase in intracellular IP3
IV. Movement of aquaporin
V. Milk ejection

TLS Online TPP Program

#Question id: 34145

#Unit 7. System Physiology – Animal

I. The short arm of human chromosome 17 contains the growth hormone-hCS cluster.
II. Growth hormone increases circulating IGF-I, which in turn exerts a direct inhibitory action on growth hormone secretion from the pituitary.
III. Growth hormone secretion is decreased in persons deprived of rapid eye movement (REM) sleep.
IV. Growth hormone secretion is induced by thyroid hormones & inhibited, by cortisol.

TLS Online TPP Program

#Question id: 34146

#Unit 7. System Physiology – Animal

I. Human pituitary prolactin has considerable structural similarity to human growth hormone and human chorionic somatomammotropin (hCS).
II. Structurally similar prolactin are secreted by the endometrium and by the placenta.
III. prolactin secretion is increased during pregnancy, reaching a peak at the time of parturition.
IV. The human prolactin receptor resembles the oxytocin receptor.

TLS Online TPP Program

#Question id: 34147

#Unit 7. System Physiology – Animal

Which of the following statements not CORRECT regarding the mechanism and reproductive role of prolactin during lactation?