Which vitamin plays a major role in the absorption of dietary calcium (Ca2+)?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin E
Answer: C
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What is the main determinant of cardiac muscle fiber length?
a. heart rate b. systolic blood pressure c. diastolic blood pressure d. the degree of systolic filling e. the degree of diastolic filling
At the end of a normal expiration when outward air flow has ceased,
a. intra-alveolar pressure is less than atmospheric pressure. b. intra-alveolar pressure is greater than atmospheric pressure. c. intra-alveolar pressure is equal to atmospheric pressure. d. intrapleural pressure is greater than atmospheric pressure. e. intrapleural pressure is greater than intra-alveolar pressure.
Vestibular information is important for all of the following except
a. hearing. b. maintenance of balance and desired posture. c. control of eye movement. d. perception of motion and orientation. e. none of these answers.
Which of the following statement is FALSE regarding oxytocin?
A. It is secreted by the posterior pituitary. B. It is synthesized by the hypothalamus and promotes contraction of myoepithelial cells in the breasts. C. It facilitates the birth process. D. It stimulates uterine contractions. E. It stimulates synthesis of breast milk.