Which of these comparisons between smooth muscle and skeletal muscle is NOT correct?
A) Smooth muscle cells are tapered at each end; skeletal muscle cells are long and cylindrical.
B) Smooth muscle cells are under voluntary control; skeletal muscle is involuntary.
C) Smooth muscle forms the walls of hollow organs except the heart; skeletal muscle attaches to the skeleton.
D) Smooth muscle cells have a single nucleus; skeletal muscle cells have many.
E) Smooth muscle cells have no striations; skeletal muscle cells have striations.
Ans: B) Smooth muscle cells are under voluntary control; skeletal muscle is involuntary.
You might also like to view...
The relative refractory period of an axon coincides with the period of
A. activation and inactivation of voltage-dependent Na+ channels. B. Na+ permeability that is greater than that during the depolarization phase. C. increased K+ flux into the cell. D. increased K+ permeability of the cell. E. Increased Na+ flux through K+ channels.
Sensory neurons can be classified as either somatic or autonomic.
a. true b. false
The largest buttocks muscle is the
A. iliopsoas. B. psoas major. C. gluteus maximus. D. tensor fascia latae. E. piriformis.
A(n) ________ is a sac of fluid associated with a synovial joint
A) meniscus B) articular sac C) articular cavity D) bursa E) synovial vesicle