Water channels in cell membranes formed by __________ are a result of ADH signaling
in the kidneys.
A) podocytes B) aquaporins C) cytopores D) pyrogens
B
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Irving, who is 78 years old, takes human growth hormone supplements to regain the
strength of his youth. He may be disappointed, because the hormone has been shown only to A) make him urinate more often. B) decrease fat and increase muscle mass, but not improve strength. C) increase his risk of cancer. D) increase the red blood cell supply.
Answer the following questions true (T) or false (F)
1. The pharynx is known as the voice box due to the presence of vocal ligaments that vibrate to produce sound. 2. The last tracheal ring of cartilage, known as the carina, has sensory receptors that can trigger a cough reflex. 3. Rings of cartilage increase in number while smooth muscle presence decreases as the bronchi branch and become smaller in the conducting zone.
When the renal tubules secrete hydrogen ions into the tubular fluid, they ________ at the same time.
A. reabsorb sodium B. reabsorb potassium C. secrete sodium D. secrete potassium E. secrete chloride
Large molecules typically elicit an immune response better than smaller molecules
Indicate whether the statement is true or false