_____is an autoimmune disease in which T cells initiate a cell-mediated response targeting the myelin in the brain and spinal cord.
A. Epstein–Barr
B. Severe combined immune deficiency (SCID)
C. Multiple sclerosis (MS)
D. Muscular dystrophy
E. Huntington’s disease
Answer: C
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What kind of movement occurs between bones in planar joints?
a. extension b. rotation c. gliding d. abduction
An individual, driving through his neighborhood, suddenly jams on his car brakes to avoid hitting a child who runs into the road after a ball. A few seconds later, the driver finds that he is shaking and his heart is pounding
This is primarily due to the secretion of which one of the following? A) epinephrine from the adrenal medulla B) cortisol from the adrenal cortex C) insulin from the pancreas D) thyroxine from the thyroid E) norepinephrine from the adrenal cortex
How do the muscles in your arm extend your arm outward?
A) The muscles in your arm push on the bones, causing your arm to extend. B) The muscles in your arm relax, and the tendons pull the arm straight. C) Some muscles in your arm relax, and others contract, pulling the arm straight. D) The top half of your bicep wraps around underneath the elbow like a rope over a pulley. When it contracts, the arm is pulled out straight.
Which change is most important in stomatal closing?
a. declining sucrose concentrations b. rising sucrose concentrations c. rising potassium concentrations d. declining potassium concentrations e. declining chloride concentrations