The speed of contraction of skeletal muscle is related to:
A. the oxidative capacity of the skeletal muscle fiber
B. the myosin ATPase activity of the skeletal muscle fiber
C. the level of ?-adrenergic stimulation
D. the rate of Ca++ extrusion from the skeletal muscle fiber
E. the level of myosin light-chain phosphorylation within the muscle fiber
ANS: B
You might also like to view...
The trochlea is a structural feature of which bone?
A) scapula B) ulna C) humerus D) radius E) clavicle
Axon terminal possess ____________________ voltage-gated channels that when operational induce neurotransmitter release
Fill in the blank(s) with correct word
Neurons of the ventrolateral preoptic nucleus (VLPO) of the hypothalamus release ________ that promotes sleep.
A. Acetylcholine B. Dopamine C. Histamine D. GABA
Cells can respond to ________ hormone(s) at the same time.
A.)several hundred B.)an unlimited number of C.)a few D.)only one