Question

question 19
1 pts
mixed cranial nerves contain axons of
sensory axons.
motor neurons.
sensory and motor neurons.
none of the above.
question 20
1 pts
a_____is a skeletal muscle or group of muscles that receives motor axons from a given spinal
nerve.
dermatome
myotome
rami
plexus
question 21
1 pts
the somatic motor system includes all the___motor pathways___the cns.
involuntary; outside
voluntary; outside
voluntary; within
involuntary; within

Explanation:

• Question 19: Mixed cranial nerves have both sensory (carrying information to the brain) and motor (carrying information from the brain) functions. So, they contain axons of sensory and motor neurons.
• Question 20: A myotome is defined as a skeletal muscle or group of muscles that receives motor axons from a given spinal nerve. A dermatome is related to sensory innervation of the skin, rami are branches of spinal nerves, and a plexus is a network of nerves.
• Question 21: The somatic motor system controls voluntary movements. The motor pathways of the somatic motor system are within the CNS (central nervous system) as they originate from motor neurons in the brain and spinal cord.

Answer:

• Question 19: sensory and motor neurons.
• Question 20: myotome.
• Question 21: voluntary; within.