What emergency drug is given when the patient has a slow heartbeat?
a. mannitol
b. atropine
c. prednisone sodium succinate
d. sodium bicarbonate
.B
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An obstruction of the bile duct often results in
A) undigested fat in the feces. B) a decrease in production of pancreatic juice. C) inability to digest protein. D) cirrhosis of the liver. E) hepatitis.
Feelings of thirstiness are brought on by
A. increases in salivary secretions and increases in blood osmolarity. B. increases in salivary secretions and decreases in blood osmolarity. C. decreases in salivary secretions and increases in blood osmolarity. D. decreases in salivary secretions and decreases in blood osmolarity.
Saltatory conduction
a. occurs in unmyelinated nerve fibers b. is slower than contiguous conduction because myelin acts as an insulator to slow the impulse c. involves the impulse jumping from one node of Ranvier to the adjacent node d. refers to the action potential spreading from one Schwann cell to the adjacent Schwann cell e. occurs along dendrites and axons of certain neurons
Which is characteristic of cross bridges?
a. they are a component of thick filaments. b. they are comprised of actin c. they have an troponin binding site. d. they attach to Z lines e. they allow shortening of the muscle proteins