The movement of molecules against their concentration gradient is called
A. facilitated diffusion.
B. active transport.
C. diffusion.
D. endocytosis.
E. osmosis.
B
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You would expect to find fenestrated capillaries in
A) skeletal muscles. B) cardiac muscle. C) the pituitary gland. D) bone. E) skin.
Imagine a patient who loses lots of blood and therefore has less stretch of their aorta with each heartbeat. What reflex will result?
A. Baroreceptors increase firing, the cardioinhibitory center increases firing, and the heart slows significantly to prevent further bleeding. B. Baroreceptors decrease firing, the cardioinhibitory center and vasomotor centers increase firing, the heart slows, and blood is redirected. C. Baroreceptors increase firing, the vasomotor center increases firing, and skin blood vessels will dilate to cause a compensatory increase in flow. D. Baroreceptors decrease firing, the cardioacceleratory center increases firing, and cardiac output will exhibit a compensatory increase.
Which hormone is not produced by the pancreas?
A) glucagon B) pancreatic polypeptide C) somatostatin D) calcitriol E) insulin
Metabolic reactions can produce
a) H+ b) HCO3- c) Nonvolatile acids d) Volatile bases e) Ca+