NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
bring sensory information to the spinal cord
|
|
|
control peripheral effectors
|
|
|
contain somatic and visceral motor neurons
|
|
|
a, b and c are correct
|
Detailed explanation-1: -Information from the skin, skeletal muscle and joints is relayed to the spinal cord by sensory cells located in the dorsal root ganglia. The dorsal root fibers are the axons originated from the primary sensory dorsal root ganglion cells.
Detailed explanation-2: -The 31 right and left spinal nerve pairs in humans form from afferent sensory dorsal axons (the dorsal root) and motor ventral efferent axons (the ventral root).
Detailed explanation-3: -The sensory impulses generated in the periphery (pain, touch, temperature changes) activate the peripheral processes of the spinal ganglion neurons. These impulses then travel to the spinal cord either directly (bypassing the cell bodies) or through the neuronal cell body in the dorsal root ganglion.