The Purkinje fibers are indicated by ________
E
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When the pH of the extracellular fluid declines,
A) the kidneys excrete more bicarbonate ions. B) the kidneys reabsorb less water. C) the pH of the urine increases. D) the kidneys excrete more sodium ions. E) the kidneys reabsorb more potassium ions.
Compact bone
A. is located deep to spongy bone in the diaphysis. B. is composed of tubular units called osteons. C. has a brace-like arrangement of trabeculae. D. is avascular. E. All of the choices are correct.
Peripheral chemoreceptors
A. are located in the aortic and carotid bodies. B. are not sensitive to changes in pH of the blood. C. are not sensitive to CO2 or H+ levels. D. are sensitive to small changes in O2 levels in the blood. E. monitor blood pressure.
What type of membranes do not open to the exterior, do not contain glands, but do secrete fluid?
A. serous B. synovial C. cutaneous D. gobletal E. mucous