The force of contraction of skeletal muscle can be increased by:
A. activating additional skeletal muscle fibers within a motor unit
B. increasing the frequency of action potentials within a skeletal muscle fiber
C. increasing ?-adrenergic stimulation of the skeletal muscle
D. increasing myosin light chain phosphorylation in the skeletal muscle
E. increasing Ca++ extrusion from the skeletal muscle fiber
ANS: B
You might also like to view...
To separate the middle and ring fingers in a "V" shape (as in the "Vulcan greeting" on the Star Trek series) requires the actions of the ________ muscles of the hand.
Fill in the blank(s) with the appropriate word(s).
When looking at a cross-sectional image the top of the image is the ________ of the patient.
A) lateral B) anterior C) inferior D) posterior E) superior
Erythrocytes
a. do not contain a nucleus. b. survive an average of 120 days. c. do not have the ability to use O2 for energy production despite the fact that they transport O2 to all the other tissues of the body. d. do not contain a nucleus and survive an average of 120 days. e. all of these answers.
Cephalic means
A. toward the middle or midline of the body. B. away from the surface. C. closer to the head. D. closer than another structure to the point of attachment to the trunk. E. toward the back of the body.