GENERAL HISTOLOGY

NERVOUS SYSTEM SPECIAL SENSE

SPINALCORD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do you call the protrusion of gray matter on either side in the thoracic upper lumbar segments
A
posterior horn
B
anterior horn
C
lateral horn
D
all of these
Explanation: 

Detailed explanation-1: -The lateral horns are present primarily in the thoracic region, and contain the preganglionic visceral motor neurons that project to the sympathetic ganglia (see Figure 1.10C).

Detailed explanation-2: -Definition. Lateral horn of spinal cord refers to a lateral sideways extension of the lateral intermediate substance (lamina VII). It can be found only in the thoracic and upper lumbar spinal segments (T1 to L2) and therefore does not extend throughout the length of the spinal cord.

Detailed explanation-3: -The lateral horn, which is only found in the thoracic, upper lumbar, and sacral regions, is the central component of the sympathetic division of the autonomic nervous system.

Detailed explanation-4: -lateral horns. A narrow band of gray matter known as the. gray commissure stretches across of the center of the spinal cord and connects the two sets of horns. In the middle of the gray commissure is the. central canal, which contains cerebral spinal fluid.

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