Spinal Cord and PNS: Function and Gross Anatomy Flashcards Preview

BIO 152 > Spinal Cord and PNS: Function and Gross Anatomy > Flashcards

Flashcards in Spinal Cord and PNS: Function and Gross Anatomy Deck (8):
1

What is the overall function of the SPINAL CORD and PNS?

It's a 2-way conduction pathway. Initiate, complete reflex

2

Where does the SPINAL CORD begin/end?

It extends from FORAMEN MAGNUM to L1/L2 vertebrae

3

What is the CONUS MEDULLARIS and where is it found

It is a *cone* shaped structure at the end of the SPINAL CORD

4

What do the CERVICAL and LUMBAR ENLARGEMENTS do?

They widen where nerves to limbs arise

5

How many pairs of SPINAL NERVES are there?

31 pairs; 21 enter/exit by VENTRAL/DORSAL ROOTS, 10 sacral and coccygeal nerves extend from CONUS MEDULLARIS in CAUDA EQUINA

6

What is the CAUDA EQUINA and where is it found?

It's a bunch of nerves at the base of the SPINAL CORD, looks kind of like the tail of a hores, hence EQUINA

7

What 4 things help to protect the SPINAL CORD?

1) VERTEBRAE
2) SPINAL DURAL SHEATH
3) ARACHNOID MATER
4) PIA MATER

8

Which structure extends from CONUS MEDULLARIS to anchor the SPINAL CORD to the coccyx?

The FILUM TERMINALE