The collecting duct becomes more permeable to water when
A. ADH production increases.
B. plasma osmolality decreases.
C. ADH production decreases.
D. colloid osmotic pressure increases.
E. aldosterone production decreases.
Answer: A
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The great cardiac vein runs alongside the
A. anterior interventricular artery. B. posterior interventricular artery. C. right marginal artery. D. aorta. E. coronary sinus.
Most blood flow through the coronary vessels occurs during ventricular systole when the heart is driving blood forward
Indicate whether the statement is true or false
Air enters from the buccal cavity into the lungs of
a. amphibians. b. mammals. c. birds. d. reptiles. e. none of these.
Which of the following constitutes the principal venous drainage of the thoracic organs?
A) The mesenteric circulation B) The hepatic portal system C) The coronary and pulmonary veins D) The branches of the celiac trunk E) The azygos system