Wednesday, January 17, 2007

What My Brother Told Me

The spinal cord has the following nerves:
from the top
Cranial
1
2
3
4 ------------| C1-4 innervates the neck
5 ------------| C5 - T1 innervates the upper limbs
6
7
8
Thoracic
1-------------|
2-------------| T2 - L1 innervates the trunk (including the abdomen and the intercostal muscles between the ribs)
3
4
5
6
7
8
9
10
11
12
Lumbar
1-------------|
2-------------| L2 - S2 innervates the lower limbs
3
4
5
Sacral
1
2-------------|
3-------------| S3 - Co2 innervates the buttox
4
5
Coccygeal (in some people)
1
2

2 comments:

Anonymous said...

i don't know if you're a mnemonic person, but:

-C3,4,5 keeps the diaphragm alive (refers to the phrenic nerve, innervating the diaphragm)

-S2,3,4 keeps the urine off the floor (refers to the pudendal nerve, innervating the bladder)

as advertized: huge nerd.

Anthony said...

Thanks for those mnemonics. Prof Stewart gave us the first one but said "you can figure out" the second. I made up my own but it had the word crap in it. Better urine.

Who are you?