Which hormone causes release of milk into the mammary ducts via the milk ejection reflex?
a) Prolactin
b) Oxytocin
c) Estrogen
d) Progesterone
e) Aldosterone
b
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At rest, the kidneys receive about a quarter of the blood coming from the heart.
Answer the following statement true (T) or false (F)
Which describes a characteristic of free radicals?
A. They rapidly oxidize other atoms by removing an electron. B. They are inert molecules that don't interact readily with other molecules. C. They contain two electrons in the outermost orbital. D. They have extra neutrons in their nuclei. E. They are found in high quantities in most sports drinks.
Someone is rushed to the hospital with acute appendicitis. Which serous membrane is in danger of infection?
A. Pleura B. Pericardium C. Peritoneum D. Meninges
If the pacemaker cells in the SA node become more permeable to potassium ions, the
A) heart rate will increase. B) heart rate will decrease. C) cells will depolarize. D) cells will hyperpolarize. E) heart rate will decrease and cells will hyperpolarize.