Quiz 1.8

Question 1

Spinal Nerves

Answer 1

Mixed nerves that send sensory and motor signals to/from CNS and extremities

Question 2

Myotome

Answer 2

Group of muscles that a SINGLE spinal nerve innervates
Organized generally by region

Question 3

Lumbar region nerves

Answer 3

Iliohypogastric, ilioinguinal, Genitofemoral, lateral cutaneous, femoral, obturator

Question 4

Sacral region nerves

Answer 4

Superior/inferior gluteal, posterior femoral, pudendal, sciatic (tibial and common fibular)

Question 5

Femoral Nerve

Answer 5

Innervates Illiacus, psoas major, Quadriceps femoris, sartorius
Bend at the hip, flex/ext leg at knee
(thigh and hip flexor)

Question 6

Obturator nerve

Answer 6

Adductor muscles of leg
ADDuct leg

Question 7

Sciatic nerve (upper)

Answer 7

Biceps femoris, semitendinosus, semimembranosus, adductor magnus
Knee flexion, lower leg external rotation, Hip extension, thigh internal rotation

Question 8

Tibial nerve

Answer 8

Gastrocnemius, popliteus, soleus, plantaris
Plantar flexion

Question 9

Fibular (Common peroneal) nerve

Answer 9

Short head biceps femoris, tibialis anterior
Dorsi flexion

Question 10

Brachial plexus

Answer 10

Originate C5-T1
Control shoulder, elbow, hand, wrist
Spinal nerve -> Roots -> Trunks -> Divisions -> Cords -> Branches
Musculocutaneous, axillary, radial, median, ulnar

Question 11

Musculocutaneous Nerve

Answer 11

C5-C7
Brachialis, biceps brachii, corocobrachialis
Arm flexion, shoulder adduction

Question 12

Axillary Nerve

Answer 12

C5,6
Deltoid, Teres minor, long head triceps
ABduction of arm, shoulder rotation, some arm extension

Question 13

Median Nerve

Answer 13

C5-C8, T1
Flexor muscles of forearm, thenar muscles
Wrist flexion, thumb movement (grip, grab, etc)

Question 14

Ulnar nerve

Answer 14

C8, T1
Flexor carpi ulnaris, Flexor digitorum profundus, hypothenar muscles, adductor pollicis
Flex fingers, flex wrist, aDDuction of hand

Question 15

Radial Nerve

Answer 15

C5-8, T1
Triceps brachii, aconeus, brachioradials, extensor carpi radialis longus/brevis, supinator, wrist hand extensors
Arm extension, wrist extension, supination, elbow stabilization

Question 16

Iliohypogastric nerve

Answer 16

Internal & external obliques, transverse abdominis
Rotate and bend trunk, stabilize spine and pelvis, flex trunk, organ protection

Question 17

Ilioinguinal nerve

Answer 17

internal oblique and transverse abdominis
Rotate and bend trunk, stabilize spine and pelvis, flex trunk

Question 18

Genitofemoral nerve

Answer 18

Upper thigh, labia majora, anterior scrotum
Sensory nerve

Question 19

Lateral cutaneous nerve

Answer 19

psoas major muscle, psoas minor muscle, quadratus lumborum muscle, iliacus muscle
Sensory of lateral thigh
Lateral rotation of hip, stabilize lumbar

Question 20

Superior gluteal

Answer 20

Gluteus medias & minimus, tensor fascia latae
aBDuct thigh, internal rotation, hip aBDuction, accessory knee flexor

Question 21

Inferior gluteal

Answer 21

Gluteus maximus
Extend hip

Question 22

Posterior femoral cutaneous

Answer 22

posterior thigh, butt, posterior calf, labia, scrotum
Sensory nerve

Question 23

Pudendal nerve

Answer 23

External anal sphincter and perianal skin
Pelvis muscles like urethra
Sensory

Question 24

Medial antebrachial and brachial cutaneous nerve

Answer 24

SENSORY nerve of for medial aspect of forearm