Angina is often felt in the upper left chest and arm because
A) these are the first areas to be injured when a person has a heart attack.
B) the pain is "referred" to the corresponding region of the primary sensory cortex.
C) muscles in this area work harder during a heart attack and become sore from fatigue.
D) the tissues in these regions are damaged or diseased.
E) None of the answers are correct.
B) the pain is "referred" to the corresponding region of the primary sensory cortex.
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If you had a genetic disorder resulting in a lack of functional mast cells, you would have a problem with
A) nerve impulse transmission. B) the repair of connective tissue. C) movement of nutrients and waste products to and from cells. D) blood cell production. E) a response to tissue injury.
The levator ani inserts on the
A) iliac crest. B) coccyx. C) ischial spine. D) central tendon of the perineum. E) sacrum.
If the brain receives signals indicating a drop in body temperature, which of the following may be the next step to bring the temperature back up?
Stimulate the sweat glands Constrict arteries to the body's internal organs Dilate arteries to the body's periphery Constrict arteries to the body's periphery
The ability to demonstrate an immune response after exposure to an antigen is called __________.
a. anaphylaxis b. immunosuppression c. immunocompetence d. passive immunity