Which of the following transport mechanisms specifically involves the movement of water?
A)primary active transport
B)secondary active transport
C)osmosis
D)filtration
E)facilitated transport
C)osmosis
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Which would result in the greatest stimulation of aldosterone secretion?
A. Decreasing plasma K+ concentration and increasing plasma angiotensin II concentration B. Increasing plasma K+ concentration and increasing plasma angiotensin II concentration C. Increasing plasma Na+ concentration and increasing plasma volume D. Increasing plasma K+ concentration and decreasing plasma angiotensin II concentration E. Decreasing plasma Na+ concentration and decreasing plasma angiontensin II concentration
Which of the following components of the nephron is largely confined to the renal medulla?
A) glomerular (Bowman's) capsule B) distal convoluted tubule C) collecting ducts D) proximal convoluted tubule E) glomerulus
If a lever has a fulcrum at one end, has a tendon exerting an effort 5 cm distal to the fulcrum, and acts against a resistance another 6 cm distal to the effort, what is its mechanical advantage?
A. 0.45 B. 11.0 C. 0.83 D. 2.2 E. 0.54
A patient presents for her annual physical examination in seemingly good health
However, she is concerned about her heart because of family history, and you proceed to work up an examination of cardiovascular function. She has a blood pressure of 128/83 mm Hg, and echocardiography indicates that end-diastolic volume is 140 mL and end-systolic volume is 80 mL. A routine ECG is obtained and is shown below. From the echocardiographic data, the patient's stroke volume amounts to: A. 80 mL B. 70 mL C. 60 mL D. 50 mL E. 45 mL