Question

question 15
1 pts
the spinal nerves are connected to the spinal cord and consist of ____ pairs.
12
21
31
41
question 16
1 pts
sensory neurons can operate in autonomic reflex arcs.
true
false
question 17
1 pts
small branches from the cervical plexus join which two cranial nerves?
vagus and hypoglossal
vagus and accessory
hypoglossal and accessory
glossopharyngeal and hypoglossal

Explanation:

• Question 15: The spinal nerves are connected to the spinal cord and there are 31 pairs of spinal nerves (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal).
• Question 16: Sensory neurons are part of reflex arcs (including autonomic reflex arcs). They detect stimuli and send signals to the central nervous system.
• Question 17: Small branches from the cervical plexus join the hypoglossal and accessory cranial nerves.

Answer:

• Question 15: 31
• Question 16: True
• Question 17: Hypoglossal and accessory