Question

the connective tissue that directly encloses individual axons is called:
○ epineureum
○ perineurium
○ endoneurium
○ dorsineurium
29 multiple choice 1 point
which of the following parts of a reflex arc would transmit the signal to the cns?
○ sensory receptor cell
○ sensory neuron
○ motor neuron
○ effector
30 multiple choice 1 point
the abducens nerve:
○ supplies innervation to a muscle of the eye
○ relays sensory information from taste buds on the tongue
○ is motor for mastication
○ is motor for facial expression

Explanation:

Question 28 (Top Question)

To determine the connective tissue enclosing individual axons, recall nerve structure: epineurium surrounds the entire nerve, perineurium surrounds fascicles, endoneurium surrounds individual axons, and "dorsineurium" is not a standard term. So endoneurium is correct.

In a reflex arc, the sensory neuron (afferent neuron) transmits signals from the sensory receptor to the central nervous system (CNS). Sensory receptor cells detect stimuli, motor neurons carry signals from CNS to effectors, and effectors respond. So sensory neuron transmits to CNS.

The abducens nerve (cranial nerve VI) innervates the lateral rectus muscle of the eye (for abduction). It is a motor nerve for eye movement. Other options: taste buds (CN VII, IX, X), mastication (CN V), facial expression (CN VII) are incorrect.

Answer:

C. endoneurium

Question 29