What is responsible for the phenomenon in skeletal muscle known as muscle tone?
A. the passive elastic properties of muscles and joints and some degree of alpha motor neuron activity
B. spontaneous entry of calcium into the cytosol and the background phosphorylation of cross-bridges
C. depletion of ATP in some individual muscle fibers, and the inability for cross-bridges to detach
D. cross-bridges that continuously cycle, even in the absence of cytosolic Ca2+
E. a buildup of K+ in the T-tubules and resulting depolarization of the sarcolemma
A
You might also like to view...
Respiratory control centers are located in the ________.
A) midbrain and medulla B) medulla and pons C) pons and midbrain D) upper spinal cord and medulla
The primary means by which individual substances are exchanged between the blood and surrounding tissues is by bulk flow
Indicate whether the statement is true or false
Both hyposecretion and hypersecretion of thyroxine can lead to goiter
Indicate whether the statement is true or false
The superior oblique eye muscles receive motor fibers from the ________ nerve.
What will be an ideal response?