This structure increases the surface area of the lining of the small intestine
A) Peptase B) Villi C) Chyle D) Lacteals
B
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After encountering an antigen, an animal has memory cells that can produce antibodies quickly. In the absence of the antigen
A) Memory cells die off. B) Memory cells don't produce antibodies at all. C) Memory cells produce few antibodies. D) Memory cells are totally inactivated.
In emphysema, all of the following occur except
A) alveoli collapse. B) compliance increases. C) there is elevated PCO2 in the blood. D) the surface area for gas exchange decreases. E) patients present with cyanosis.
Increased pressure in the eye caused by an accumulation of aqueous humor is called astigmatism
Indicate whether the statement is true or false.
The most important muscles used to pick up a pencil with your toes are the hallucis longus, which acts on the great toe, and the ________.
Fill in the blank(s) with the appropriate word(s).