Myelin sheaths surrounding nerve fibers in the peripheral nervous system are produced by ____
a. Schwann cells
b. microglia
c. satellite cells
d. astrocytes
a
You might also like to view...
Blood pressure ________ as blood travels from arteries, through capillaries, to the veins.
A. stays constant B. increases C. decreases
Which type of chemical reaction will absorb more energy than it releases?
a) exergonic b) endergonic c) potential d) kinetic e) activation
The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?
A) to flex and adduct the humerus and to act as a synergist of the pectoralis major B) to initiate abduction of the arm, to stabilize the shoulder joint and to help prevent downward dislocation of the humerus C) to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi D) to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally
What is/are the major role(s) of the phospholipid bilayer?
A) the formation of a barrier that is selectively permeable to lipid-soluble molecules and to provide a framework for membrane proteins B) the absorption of fats only C) to carry water-soluble molecules through a hydrophobic environment only D) to provide a framework for membrane proteins only E) the formation of a barrier that is selectively permeable to lipid-soluble molecules only