Contraction of mesangial cells results in a(n) ________, which decreases glomerular filtration.
A) increase in surface area of capillaries available for filtration
B) decrease in surface area of capillaries available for filtration C) dilation of the efferent arterioles
D) dilation of the afferent arterioles
E) constriction of the afferent arterioles
Answer: B) decrease in surface area of capillaries available for filtration C) dilation of the efferent arterioles
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Which of the following acts to decrease blood glucose levels?
A. Glucagon B. Cortisol C. Insulin D. Growth hormone E. Epinephrine
The hepatic portal vein carries blood away from the
A) digestive tract. B) kidneys. C) pancreas. D) spleen. E) liver.
The sleep cycle is approximately __________ minutes.
A) 30 B) 50 C) 75 D) 90
Define basal nuclei
A) The basal nuclei produce oxytocin and ADH and help control the release of anterior pituitary hormones. B) The basal nuclei play a role in regulating heart rate, controlling the "fight or flight" response, and in linking emotions with specific memories. C) The basal nuclei are masses of cerebral gray matter that function in the subconscious control of skeletal muscle activity and help coordinate learned movement patterns. D) The basal nuclei are masses of cerebral gray matter that processes sensory information and influences emotional states. E) The basal nuclei are responsible for heightened alertness and generalized excitement or generalized lethargy and sleep.