Coccyx Flashcards Preview

Spinal > Coccyx > Flashcards

Flashcards in Coccyx Deck (21):
1

What is the number of coccygeal somites?

Ten

2

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

4 segments

3

When is ossification of coccyx completed?

About age 30

4

What is the homolog of the superior articular process and facet on Co1?

Coccygeal Cornu

5

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

Flexion - extension, 5-20 degrees

6

How many coccygeal nerves are present in the fetus?

Typically 5 Paris of coccygeal nerves are present

7

How many coccygeal nerves are present in the adult?

Typically only one pair of coccygeal nerves remain in the adult

8

What is the ganglion impar?

A midline sympathetic ganglion

9

What is the coccygeal glomus or coccygeal body?

An enlarged encapsulated arteriovenous anastomosis located near the last segment of coccyx

10

What innervates the coccygeal glomus or coccygeal body?

Both sympathetic and parasympathetic fibers are IDed

11

What muscles attach to the coccyx?

Ischiococccygeus and levator ani

12

What is the homolog for the posterior longitudinal ligament at Co1?

Deep posterior sacrococcygeal ligament

13

What is the homolog for the anterior longitudinal ligament at Co1?

Anterior sacrococcygeal ligament

14

What forms the inferior boundary of the spinal canal?

The union of the superficial posterior and deep posterior sacrococcygeal ligaments

15

What is the homolog for the capsular ligaments at Co1?

Intercornual ligament

16

What ligaments form the posterior boundary for the Co1 spinal nerve intervertebral Foramen?

Superficial posterior sacrococcygeal ligament and intercornual ligament

17

What ligament form the anterior boundary for the Co1 spinal nerve intervertebral Forman?

Deep posterior sacrococcygeal ligament and intervertebral disc

18

What bony features are present on the coccyx?

All segments are represented by a "vertebral body; Co1 has a coccygeal Cornu and TVP"

19

What forms the coccygeal nerve plexus?

S4, S5 an dCo1 nerves

20

What is the location of the ganglion impar?

Anywhere from the sacrococcygeal joint to the upper third of coccyx

21

What is the homolog you for the ligamentum flavum at Co1?

Superficial posterior sacrococcygeal ligament