The complement system
a. consists of plasma proteins produced by the liver that circulate in the blood in inactive form
b. is the primary mechanism activated by antibodies to kill foreign cells
c. can be activated by antibodies and/or antigens
d. is considered a nonspecific defense
e. has all of the above characteristics
E
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The simple sugar glucose is an example of a
A. monosaccharide.?B. lipid.?C. polysaccharide.?D. polymer.?E. glycogen.
When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________
A) the H zone to appear wider B) the I bands to appear smaller C) the I bands to appear wider D) the A band to appear darker
Which statement regarding vasopressin in incorrect?
a. it is produced in the hypothalamus. b. it stimulates uterine smooth muscle contraction. c. it increases kidney reabsorption of water. d. it is a potent arteriolar vasoconstrictor. e. it is released when the osmolarity of the plasma increases.
The inflammatory response
A. prevents the spread of an infection. B. stimulates erythrocytes to leave the blood. C. delays healing of damaged tissues. D. depresses immunity. E. is harmful and should be immediately reversed.