Which of the following is consistent with homeostasis?
A. As body temperature rises, sweating occurs to cool the body.
B. When a person drinks large quantities of water, urine output decreases to raise blood volume.
C. Elevated blood glucose levels cause insulin secretion to decline.
D. Decreases in blood pressure cause a corresponding decrease in heart rate.
E. As blood pressure falls, blood flow to the heart decreases.
A
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An embryonic septum that develops within the bulbus cordis and truncus arteriosus produces what structures?
A. The right and left atria B. The right atrium and right ventricle C. The ascending aorta and pulmonary trunk D. The right and left ventricles E. The left atrium and left ventricle
This figure shows the thoracic cage which number(s) indicate a costal notch?
A. 2, 3 B. 2, 6 C. 3 D. 3, 6 E. 2, 3, 6
In the presence of ADH, ___________% of the filtered load of water can be reabsorbed.
a. 10 b. 65 c. 85 d. 99
When lying down, a subject's respiratory rate is 12 breaths per minute, his anatomical dead space is 150 mL, and his minute ventilation is 7 L/min. Which of these is closest to his alveolar ventilation in liters per minute?
A. 6.0 B. 5.2 C. 4.2 D. 3.0 E. 0.583