Coccyx

Question 1

What is the number of coccygeal somites?

Answer 1

10

Question 2

What is the typical number of segments that unite to form the adult coccyx?

Answer 2

4 Segments

Question 3

What is ossification of coccyx completed?

Answer 3

About age 30

Question 4

What is the direction of fusion of coccygeal segments?

Answer 4

From Caudal to Cranial the last segments to fuse together are Co1 and Co2

Question 5

What is the direction of the coccygeal curve?

Answer 5

Posterior (kyphotic)

Question 6

What is the major motion and range of motion for coccyx?

Answer 6

Flexion–Extension, 5-20 degrees

Question 7

How many coccygeal nerves are present in the fetus?

Answer 7

Typically 5 pairs

Question 8

What forms the coccygeal nerve plexus?

Answer 8

S4, S5 and Co1

Question 9

What is the ganglion impair?

Answer 9

Midline Sympathetic Ganglion

Question 10

What is the coccygeal glomus or coccygeal body?

Answer 10

Enlarged capsulated arteriovenous anastamosis located near the last segment of coccyx.