When body temperature rises, a center in the brain initiates physiological changes to decrease the body temperature. This is an example of
A) negative feedback.
B) positive feedback.
C) nonhomeostatic regulation.
D) diagnostic regulation.
E) fever.
A
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A plasma protein essential for blood clotting is
A) albumin alpha. B) fibrinogen. C) immunoglobulin A. D) metalloprotein D. E) lipoprotein C.
Select the correct statement regarding epithelia
A) Simple epithelia form impermeable barriers. B) Pseudostratified epithelia consist of at least two layers of cells stacked on top of one another. C) Stratified epithelia are tall, narrow cells. D) Stratified epithelia are present where protection from abrasion is important.
Match the following:
A) Digestion B) Hydrolysis C) Absorption D) Peristalsis 1) Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube. 2) Chemical or mechanical process of breaking down foodstuffs to substances that can be absorbed. 3) Enzymatic breakdown of any type of food molecule. 4) Process by which the products of digestion pass through the lumen of the gastrointestinal tract into the blood or lymph.
Which of the following is greater?
A) blood pressure when the peripheral vessels constrict B) blood pressure when the peripheral vessels dilate