Question

the primary function of the motor nerves is:
a. to instruct the brain on required actions
b. to sense motor movement
c. to tell the skeletal muscles to move
d. to act as the pacemaker for the heart

what is the term used to describe a network of intersecting nerves?
a. bundle
b. tract
c. trunk
d. plexus

Explanation:

Analyze Question 24

Motor nerves (efferent nerves) carry signals from the central nervous system to effector organs, primarily skeletal muscles, to initiate movement.

• Option a describes sensory or afferent pathways.
• Option b describes proprioception (sensory).
• Option c correctly identifies the motor function of stimulating skeletal muscle contraction.
• Option d refers to the sinoatrial node.

Analyze Question 25

A network of intersecting nerves is anatomically defined as a plexus (e.g., brachial plexus, lumbosacral plexus).

• Option a (Bundle) is a general term, often referring to a fascicle.
• Option b (Tract) is a collection of nerve fibers in the central nervous system.
• Option c (Trunk) is a large bundle of nerves before they branch.
• Option d (Plexus) is the specific term for an intersecting network of nerves.

Answer:

Question 24

• a. to instruct the brain on required actions
• b. to sense motor movement
• c. to tell the skeletal muscles to move (Correct answer)
• d. to act as the pacemaker for the heart

Question 25

• a. Bundle
• b. Tract
• c. Trunk
• d. Plexus (Correct answer)