GENERAL HISTOLOGY

NERVOUS SYSTEM SPECIAL SENSE

PERIPHERAL NERVE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
There are 8 pairs of ____ nerves.
A
lumbar
B
cranial
C
cervical
D
sacral
Explanation: 

Detailed explanation-1: -More specifically, there are eight cervical nerve pairs (C1-C8), twelve thoracic nerve pairs (T1-T12), five lumbar nerve pairs (L1-L5), 5 sacral (S1-S5), and a single coccygeal nerve pair.

Detailed explanation-2: -Because there are only seven cervical vertebrae, the first seven cervical nerves exit above the same numbered cervical vertebrae. The eighth cervical nerve exits above the T1 vertebrae, and the rest of the spinal nerves (T2 to L5) exit below their same numbered vertebrae.

Detailed explanation-3: -Radiographs of the cervical spine showed no signs of trauma. However, it was noted that the cervical spine comprised 8 vertebrae instead of the usual 7 (Fig. 1). In addition, the thoracic radiograph demonstrated 13 vertebrae (Fig.

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