external anatomy Flashcards Preview

spinal cord > external anatomy > Flashcards

Flashcards in external anatomy Deck (11)
Loading flashcards...
1

What is the shape of the spinal cord?

oval
width is greater than anterior posterior side

2

What are the grooves that run longitudinally along the spinal cord?

Ventral median fissure
dorsal median fissure (shallower than ventral median fissure)
ventral lateral sulci
dorsal lateral sulci

3

What arises from ventral lateral and dorsal lateral sulci?

Ventral lateral sulci -anterior spinal nerve roots
dorsal lateral sulci - posterior spinal nerve roots

4

How is the spinal cord divided?

into left and right hemispheres by a artificial line that connects the anterior median fissure and the posterior median sulcus

5

Where does the spinal cord lie in the vertebral canal?

in the superior 2/3
it is continuous with the brainstem superiorly threw the foramen magnum

6

where does the spinal cord terminate in the vertebral canal?

L1/L2 intervebral disk in in the Conus medularis in adults

7

What is the area below the conus medullaris?

lumbar cistern -

8

What does the lumber cistern contain?

cauda equina
CSF
internal filum terminale

9

What is the cervical enlargement?

parts of the spinal cord that is enlarged from C4-T1
anterior rami of C4-T1 which form the brachial plexus

10

What is the lumbar sacral enlargement?

region of spinal cord from T11- S1 spinal cord level
this forms lumbar plexus and sacral plexus

11

What is immediately below the lumbar sacral enlargement?

conus medullaris