If body temperature increases above normal, ________.
A. sweating occurs and blood vessels of the dermis dilate
B. the nervous system causes blood vessels to dilate
C. sweat is produced by both eccrine and appocrine glands
D. sweating occurs and the blood vessels of the dermis contract
Answer: A
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When the horse received antiserum, it provided him with artificially acquired ________ immunity
Fill in the blank(s) with correct word
Negative feedback occurs when the increasing blood level of a hormone inhibits its continued secretion from its source endocrine gland
a. True b. False Indicate whether the statement is true or false
The normal pH of blood is
A) slightly alkaline. B) neutral. C) slightly acidic. D) extremely alkaline. E) extremely acidic.
Which of the following represents a class I lever system?
A. Standing on your tiptoes B. Crossing your legs C. Lifting weight with your arm D. Flexion of the elbow to elevate the hand E. Hyperextension of the head