Muscles that insert on the olecranon process of the ulna can act to
A) flex the forearm.
B) extend the forearm.
C) abduct the forearm.
D) adduct the forearm.
E) extend the carpals.
B
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The pharmaceutical drug RU-486, typically used to treat Cushing's disease, is also sometimes used for medical abortions. RU-486 blocks progesterone production and its binding to receptors in the reproductive tract. Why would this affect pregnancy and embryonic growth?
A. Progesterone stops the corpus luteum from degrading. Without the corpus luteum, hCG (responsible for uterine growth and development) cannot be produced. B. Progesterone maintains the endometrium and prevents it from breaking down and shedding in a normal menstrual period. It also assists in stopping uterine contractions until birth. C. Progesterone stimulates release of aldosterone from the adrenal cortex. Without aldosterone, fluid is lost through the kidneys and causes high blood pressure in the uterus, which is fatal to the fetus. D. Progesterone stimulates the ovaries to produce LH, which then causes hCG production. Production of hCG is needed to inhibit pituitary FSH secretion, which induces menstrual periods.
The dorsal __________ muscles are hand muscles that abduct digits II to IV.
Fill in the blank(s) with the appropriate word(s).
The division of the autonomic nervous system that prepares the body for intense levels of activity and stress is the
A) somatomotor division. B) intramural division. C) craniosacral division. D) sympathetic division. E) parasympathetic division.
How is the sensation of taste affected by a dry mouth?
A) The moisture level of the mouth has no influence on taste sensation. B) Foods have a less intense taste when the mouth is dry. C) Foods have a more intense taste when the mouth is dry. D) Most foods will taste bitter when the mouth is dry.