Which of the following is not involved in the relaxation of muscle?

a. when acetylcholine is destroyed by acetylcholinesterase.
b. when there is no longer a local action potential.
c. when the T tubules actively take up the Ca2+ that had been released.
d. when the actin and myosin molecules are no longer bound together.
e. when the troponin-tropomyosin complex slips back into its blocking position.


C

Anatomy & Physiology

You might also like to view...

Describe how the bicarbonate buffer system functions to maintain pH

What will be an ideal response?

Anatomy & Physiology

The origin of the deltoid is (the)

A) humerus. B) vertebral column. C) scapula. D) clavicle. E) both scapula and clavicle.

Anatomy & Physiology

The anatomical term that indicates a structure close to the surface is

A) superior. B) anterior. C) proximal. D) superficial.

Anatomy & Physiology

What is the girdle of glycoproteins just below the tight junction between epithelial cells?

A. gap junction B. hemidesmosomes C. adhesion belt D. desmosomes E. intercalated disks

Anatomy & Physiology