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Flashcards in thoracic nerve Deck (22)
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0

how many pairs of thoracic nerve roots are there?

12

1

what will each nerve divide into?

posterior and anterior primary ramus

2

what does the posterior primary ramus divide into?

medial and lateral branch

3

what are the muscles supplied by the medial branch?

semispinalis(upper six), longissimus (lower six), multifidi

4

what is the sensory area supplied by the medial branch of the posterior ramus?

skin paraspinally

5

do the lateral branches of the thoracic spinal nerves carry motor or sensory information

both motor and sensory

6

how to the lateral branches of the thoracic spinal nerves increase in size

from superior to inferior

7

what muscles are supplied by the lateral branches of the thoracic spinal nerves

longissimus, iliocostalis, and levator costorum

8

where does the lateral branches of the thoracic spinal nerves supply sensory information to?

skin near the costal angles

9

the anterior primary rami of the thoracic spinal nerves follow what course in relation to ribs

they follow the course of the rib above the nerve

10

aside from contributing to the brachial plexus what other branch does the T1 anterior primary ramus give off?

a smaller branch that forms the first intercostal nerve

11

what anterior primary rami contribute to the intercostobrachial nerve

T2 and T1(sometimes)

12

each intercostal nerves gives off which branch

lateral cutaneous branch

13

what does the lateral cutaneous branch of the anterior primary rami divide into? and what do they supply?

anterior branch and posterior branch, supplying the overlying skin

14

where do intercostal nerves terminate and what do they supply

in the anterior cutaneous branches , that supply the skin close to midline

15

what muscles do the intercostal nerves give off muscular branches to supply?

internal intercostals, external intercostals, serratus posterior, transversus thoracis, transverse abdominal (7-11) internal abdominal oblique (7-11), external abdominal oblique(7-11), rectus abdominus(7-11)

16

aside from muscles what else will the intercostal nerves supply

adjacent blood vessels, bones, joints, and ligaments

17

what is the largest thoracic nerve

subcostal nerve (T12)

18

what plexus does the subcostal nerve contribute to

lumbar plexus

19

how far does the subcostal nerve supply the skin

as far inferior as the superior buttocks

20

how does each thoracic nerve communicate with the sympathetic trunk

both white and gray ramus communicans

21

where is the gray ramus located in relation to the white ramus

medial