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Spinal Exam 2 questions > Coccyx > Flashcards

Flashcards in Coccyx Deck (13)
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1

# of coccygeal somites

10

2

typical # of segments that unite to form the adult coccyx

4

3

age ossification of coccyx is completed

about 30

4

the direction of fusion of coccygeal segments

from caudal to cranial, the last segments to fuse together are Co1 and Co2

5

direction of the coccygeal curve

posteror (kyphotic)

6

major motion and range of motion for the coccyx

flexion-extension, 5-20*

7

# of coccygeal nerves present in the fetus

typically 5 pairs of coccygeal nerves are present

8

# of coccygeal nerves present in an adult

typically only 1 pair of coccygeal nerves are present

9

forms the coccygeal nerve plexus

S4,5 and Co1 nerves

10

what is the ganglion impar

a midline sympathetic ganglion

11

what is the coccygeal glomus or coccygeal body

an enlarged encapsulated arteriovenous anastamosis located near the last segment of coccyx

12

innervates the coccygeal glomus or coccygeal body

both sympathetic and parasympathetic fibers are identified

13

what muscles attach to the coccyx

ischiococcygeus and levator ani