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

Anatomy & Physiology

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

Anatomy & Physiology

Axon terminal possess ____________________ voltage-gated channels that when operational induce neurotransmitter release

Fill in the blank(s) with correct word

Anatomy & Physiology

Neurons of the ventrolateral preoptic nucleus (VLPO) of the hypothalamus release ________ that promotes sleep.

A. Acetylcholine B. Dopamine C. Histamine D. GABA

Anatomy & Physiology

Cells can respond to ________ hormone(s) at the same time.

A.)several hundred B.)an unlimited number of C.)a few D.)only one

Anatomy & Physiology