Spinal nerves + plexuses

Question 1

cranial and spinal nerves (& their ganglia)

Answer 1

pns

Question 2

peripheral nerves are mostly ____ axons

Answer 2

myelinated

Question 3

single axon in a peripheral nerve

Answer 3

nerve fiber

Question 4

cells found in DNRG

Answer 4

unipolar cells

Question 5

cells found in retina + sensory ganglia of cochlear and vestibular nerves

Answer 5

bipolar cells

Question 6

Branches of the cervical plexus

nerves of the cutaneous branches (superficial)

Answer 6

lesser occipital
greater auricular
transverse cervical
supraclavicular (ant, mid, post)

Question 7

c2-c3 spinal root nerves

Answer 7

lesser occipital
greater auricular
transverse cervical

Question 8

c3-c4 spinal root nerves

Answer 8

supraclavicular

Question 9

lesser occipital structures served

Answer 9

sensory

posterolateral neck

Question 10

greater auricular structures served

Answer 10

sensory

ear + parotid gland

Question 11

transverse cervical structures served

Answer 11

sensory

anterior + lateral neck

Question 12

supraclavicular structures served

Answer 12

sensory

shoulder + ant. chest

Question 13

Branches of the cervical plexus
motor branches (deep) nerves

Answer 13

ansa cervicalis
segmental branches
phrenic

Question 14

spinal roots of ansa cervicalis

Answer 14

c1-c4

Question 15

spinal roots of segmental branches

Answer 15

c1-c5

Question 16

spinal roots of phrenic

Answer 16

c3, c4, c5 keeps the diaphragm alive

Question 17

branches of the lumbar plexus

Answer 17

femoral
obturator
lateral femoral cutaneous 
iliohypogastric
ilioinguinal
genitofemoral

Question 18

spinal roots of femoral

Answer 18

l2-l4

Question 19

spinal roots of obturator

Answer 19

l2-l4

Question 20

spinal roots of lat fem cut

Answer 20

l2, l3

Question 21

spinal roots of iliohypogastric

Answer 21

l1

Question 22

spinal roots of ilioinguinal

Answer 22

l1

Question 23

spinal roots of genitofemoral

Answer 23

l1, l2

Question 24

motor nerves of lumbar plexus

Answer 24

femoral

obturator

Question 25

sensory nerves of lumbar plexus

Answer 25

femoral
obturator
lateral femoral cutaneous
iliohypogastric
ilioinguinal
genitofemoral

Question 26

femoral innervation

Answer 26

sensory: thigh, leg, foot, hip, knee joints
motor: anterior thigh, psoas, pectineus, iliacus

Question 27

obturator innervation

Answer 27

sensory: medial thigh + hip joint
motor: adductors, gracilis + obturator externus

Question 28

lat fem cut innervation

Answer 28

sensory: lat thigh, branches to peritoneum

Question 29

iliohypogastric innervation

Answer 29

sensory: lower abs, lower back, hip

Question 30

ilioinguinal innervation

Answer 30

sensory: ext genitalia, thigh and abs

Question 31

genitofemoral innervation

Answer 31

sensory: scrotum, labia, thigh, cremasteries

Question 32

branches of the sacral plexus + spinal roots

Answer 32

sciatic nerve - l4-s3
tibial - l4-s3
common peroneal (fibular) - l4-s2
superficial peroneal (fibular) - l4-s2
deep peroneal - l4-s2
superior gluteal - l4-s1
inferior gluteal - l5-s2
pudendal - s2-s4

Question 33

motor nerves of the sacral plexus

Answer 33

all

Question 34

sensory nerves of the sacral plexus

Answer 34

tibial
common peroneal
pudendal

Question 35

sciatic nerve innervation

Answer 35

motor: tibial + common peroneal

Question 36

tibial nerve innervation

Answer 36

sensory: post leg, foot
motor: all muscles back of thigh, leg, foot

Question 37

common peroneal innervation

Answer 37

sensory: ant leg, dorsum foot
motor: peroneals, tibialis ant., extension of the knee

Question 38

superficial peroneal innervation

Answer 38

motor: lateral compartment of leg

Question 39

deep peroneal innervation

Answer 39

motor: ant. compartment of leg

Question 40

superior gluteal innervation

Answer 40

motor: gluteus medius, minimus, TFL

Question 41

inf. gluteal innervation

Answer 41

motor: gluteus max

Question 42

pudendal innervation

Answer 42

sensory: muscles of perineum
motor: ext. anal sphincter