Exam 2: Spinal Nerves

Question 1

___ pairs spinal nerves

Answer 1

31

Question 2

__ cervical nerve pairs

Answer 2

8

Question 3

__ thoracic Nerve Pairs

Answer 3

12

Question 4

__ lumbar nerve Pairs

Answer 4

5

Question 5

__ sacral Nerve Pairs

Answer 5

5

Question 6

__ coccygeal nerve pairs

Answer 6

1

Question 7

Anterior rootlets carry ___ from cell bodies in ____

Answer 7

Efferent axons

Anterior horns of gray matter

Question 8

Anterior roots attached to spinal cord by

Answer 8

Series of rootlets

Question 9

Posterior roots carry afferent axons from cell bodies in ___

Answer 9

DRG

Question 10

___ typically located on either side or just medial to IVF, beyond dura mater

Answer 10

Spinal ganglia

Question 11

C1 and C2 ganglia located

Answer 11

Vertebral arches

Question 12

Sacral ganglia located

Answer 12

Vertebral canal , beyond dura

Question 13

Coccygeal ganglia located

Answer 13

Inside dura mater

Question 14

___ present at all spinal levels

Answer 14

Meningeal branch

Question 15

Meningeal branch divides into

Answer 15

Ascending
Descending
Transverse

Question 16

Meningeal branch and divisions provide somatosensory and Postganglionic sympathetic supply to

Answer 16

Dura 
Blood vessels 
Periosteum 
Ligaments
IVD

Question 17

Dorsal primary ramus spilts into lateral and medial branches except at

Answer 17

C1

Question 18

Dorsal primary ramus smaller than anterior ramus except

Answer 18

C1, S4, S5

Question 19

Posterior primary ramus provides motor innervation to

Answer 19

Deep back muscles

Question 20

Posterior primary ramus provides sensory innervation to

Answer 20

Skin on either side of spine

Question 21

Anterior primary ramus motor to

Answer 21

Anterior and lateral trunk muscles

Extremities

Question 22

Anterior primary ramus sensory to

Answer 22

Skin of extremities

Anterior and lateral trunk

Question 23

Anterior rami contributes to

Answer 23

Great plexuses

Question 24

White ramus communicans carries ____

Answer 24

Myelinated axons

Question 25

Fibers carried in white ramus communicans

Answer 25

Preganglionic sympathetic

Question 26

White rami communicans only associated with

Answer 26

T1-L2

Question 27

2 fates of pre symp. Fibers in white ramus communicans

Answer 27

1. Synapse at same level or ascend/descend | 2. Pass through (splanchnic)

Question 28

Gray ramus communicans carries ___

Answer 28

Unmyelinated post. Symp. Axons

Question 29

Gray ramus communicans associated with

Answer 29

Each spinal nerve

Question 30

Suboccipital N motor to

Answer 30

RCP major/minor Obliquus capitis sup/Inf Semispinalis capitis

Question 31

Greater occipital N aka

Answer 31

Medial branch C2

Question 32

Greater occipital N sensory to

Answer 32

Posterior neck and scalp

Question 33

Unique about suboccipital N

Answer 33

Does not split

Question 34

Lateral branch of C2 motor to

Answer 34

Semispinalis capitis Longissimus capitis Splenius capitis

Question 35

Medial branch C3 aka

Answer 35

Least occipital N

Question 36

Least occipital N sensory to

Answer 36

Skin of posterior neck

Question 37

Lateral branch C3 motor to

Answer 37

Semispinalis capitis Longissimus capitis Splenius capitis

Question 38

Medial branches of C4-8 sensory supply

Answer 38

Skin of posterior neck

Question 39

Lateral branches of C4-8 motor supply

Answer 39

Iliocostalis cervicis | Longissimus cervicis and capitis