If air temperature is higher than skin temperature, ________ becomes a means of heat loss through evaporation.
A. fever
B. chills
C. vasoconstriction
D. shivering
E. sweating
Answer: E
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Which of the following vitamins is needed to aid in absorption of iron?
A) Vitamin A B) Vitamin B C) Vitamin C D) Vitamin D
The small intestine has three histologically dictinct regions. Which of the following statements concerning the histological differences in the three regions is true?
(a) Peyer's patches are present only in the ileum (b) goblet cells are present only in the epithelium of the duodenum (c) Brunner glands are located in the duodenum and jejunum but not the ileum (d) lymph follicles are present only in the lamina proprial of the ileum (e) the muscularis muscosae contains three layers of smooth muscle in the ileum and two layers in the duodenum and jejunum.
Hyaluronic acid is a component of the ________
A) organic matrix B) osteocyte C) inorganic matrix D) mineralized salts
Three common components of a feedback loop are ________, ________, and ________
A) stimulus; integrating (control) center; organ system B) receptor; organ; organ system C) receptor; integrating (control) center; effector D) stimulus; receptor; integrating (control) center E) receptor; integrating (control) center; organ system