The release of glucagon into the bloodstream stimulates:
A) the liver to convert glycogen to glucose.
B) the liver to take in and store more glucose.
C) the cells to uptake sugar from the bloodstream.
D) the vessels to constrict, thus increasing blood pressure.
Ans: A) the liver to convert glycogen to glucose.
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The relative refractory period occurs after the action potential is complete because of
a. the lingering inactivation of the voltage-gated Na+ channels b. the slowness of the voltage-gated K+ channels c. the action of the sodium-potassium pumps d. both a and b e. both b and c
Facilitated diffusion requires energy and can transport molecules against a concentration gradient.
Indicate whether the statement is True or False.
Which of the following is a general sense?
A. Taste B. Vision C. Smell D. Hearing E. Touch
________ is/are formed in an early stage in intramembranous ossification.
A. Chondrocyte proliferation B. Osteoid tissue C. Chondrocyte hypertrophy D. Blood cells E. A secondary ossification center