Dermatomes & myotomes, spine Flashcards Preview

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Flashcards in Dermatomes & myotomes, spine Deck (20)
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1
Q

how many segements is the spinal cord composed of?

A

31 segments

2
Q

what is a Funiculus, Tract, Fasciculus

A
3
Q
  • white matter is organised into______
  • grey matter in the cord is organised into ______
A
  • white matter is organised into tracts
  • grey matter in the cord is organised into cell columns
4
Q

function of spinal roots, what r the 2 types entering and exiting the spinal cord and what type of nerve fibers do they contain?

A
5
Q

what does each horn carry?

A

ventral> motor neurons

Dorsol > sensory neurons

lateral> sympathetic neurons

6
Q

what is a spinal nerve?

A
7
Q

label neuron

A
8
Q

Label microscopic neuron

A
9
Q

Spinal cord runs through ______________ .

Spinal nerves leave spinal canal via ______________.

A

vertebral foramen

intervertebral foramina

10
Q

where does the spinal cord specifically start and end?

A

Starts at inferior margin of medulla oblongata

Ends as conus medullaris at L2

11
Q

where does the First cervical pair of spinal nerves emerge from?

A

between occipital bone and atlas (C1)

12
Q

Explain how nerves exit the vertebrae in the spine

A

from C1-C7 they exit above corresponding vertebrae

***Spinal nerve C8 exits between vertebrae C7 and T1*

from T1-L5 exit below corresponding vertebrae

13
Q

explain what happens after a mixed nerve is formed…what comes next?

A

mixed spinal nerve divides into RAMI!

Posterior / dorsal ramus: deep muscles and skin of dorsal trunk (small)

Anterior / ventral ramus: muscles and skin of the upper and lower limbs and lateral and ventral trunk (large)

14
Q

but wait… the spinal nerve also gives another branch, i mean someone has to supply the ligaments, meninges, and vertebrae right?

so whats this branch called? come onnnnn gimme ur best shot!!

A

Meningeal branch!

Re-enters spinal canal through intervertebral foramen

15
Q

another pic for fun

A
16
Q

Dermatome

A
17
Q

do the myotome daaaaaance

A
18
Q

myotome and dermatome

define

A
19
Q

be aware lalls

A
20
Q

what type of neuri

A