Lab 2 - Gross Anatomy of the Peripheral Nervous System

Spinal Accessory n. XI (motor)

Sternocleidomastoid and trapezius muscles

Hypoglossal n. XII (motor)

Muscles of the tongue

Vagus Nerve X (both sensory and motor)

Both motor and sensory fibers to the visceral body organs

Pathology: Clinical manifestations may include dysphagia, vocal cord weakness and alterations of the parasympathetic tone of the thorax and abdomen

Infraorbital nerve

Lower eyelid and upper lip; infraorbital canal

Phrenic nerve

Diaphragm muscles to control breathing; both phrenic nerves run C3-C5 along the anterior scalene muscle before dividing into the thorax to pass between the lungs and heart

Suprascapular nerve

Supraspinatus and infraspinatus muscles; suprascapular notch of the scapula

Subscapular nerves

Subscapularis, teres major and latissimus dorsi muscles

Axillary nerve

Deltoid and teres minor muscles

Musculocutaneous nerve

Coracobrachialis, biceps brachii, and brachialis muscles

Radial nerve

Triceps brachii and all muscles of the posterior forearm, sensation to lateral posterior surface of the hand; radial groove of the humerus bone

Pathology: When damaged, an individual cannot draw their wrist up and thus this condition is referred to as wrist drop

Median nerve

Sensation to the lateral anterior hand

Pathology: Carpal tunnel syndrome is generally associated with compression of this nerve

Ulnar nerve

Sensation to the anterior and posterior medial hand; behind the medial epicondyle of the humerus

Pathology: Superficial and thus often exposed to contact stimulation and pain in the "funny bone"

Long thoracic nerve

Serratus anterior muscle

Pathology: When this nerve is damaged, the scapula wings out as it can no longer be held against the body

Sciatic nerve

Biceps femoris, semitendinosus and semimembranosus muscles; greater sciatic notch of the pelvis

Tibial nerve

Gastrocnemius, soleus and plantaris muscles

Common fibular nerve (gives off a superficial and deep branch and is also often cited as the common peroneal nerve

Anterior muscles of the leg (not the thigh)

pathology: When damaged, muscles in the posterior leg are no longer antagonized by contracting muscles from the anterior leg resulting in an unsynchronized foot drop with each step

Femoral nerve

Rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius muscles

Lateral cutaneous nerve

Sensation to the lateral thigh

Obturator nerve

Sensation to the medial thigh; obturator foramen of the hip

Saphenous nerve

Sensation to the medial leg and medial ankle/foot

Sympathetic trunk and ganglia

Distributes fibers through the ramus communicans for sympathetic influence into spinal nerves

#1

Clavotrapezius

#2

Spinal accessory nerve XI (motor)

#3

Splenius

#4

Levator scapulae ventralis

#5

Cervical Nerve #2

#6

Cervical nerve #3

#7

Cervical nerve #4

#8

Cervical nerve #5

#9

Suprascapular nerve

#10

First subscapular nerve

#11

Axillary nerve

#12

Second subscapular nerve

#13

Musculocutaneous nerve

#14

Radial nerve

#15

Biceps brachii

#16

Median nerve

#17

Ulnar nerve

#18

Latissimus dorsi

#19

Triceps brachii

#20

Hypoglossal nerve XII (motor)

#21

Cervical nerve I

#22

Vagus nerve X (both motor and sensory)

#23

Longus capitis

#24

Phrenic nerve

#25

Scalenes

#26

Third subscapular nerve

#27

Long thoracic nerve

#1

Hypoglossal nerve XII (motor)

#2

Cervical nerve I

#3

Spinal accessory nerve XI (motor)

#4

cervical nerve #2

#5

cervical nerve #3

#6

cervical nerve #4

#7

cervical nerve #5

#8

Vagus nerve X (both motor and sensory)

#9

Suprascapular nerve

#1

cervical nerve #4

#2

cervical nerve #5

#3

Suprascapular nerve

#4

first subscapular nerve

#5

axillary nerve

#6

second subscapular nerve

#7

musculocutaneous nerve

#8

radial nerve

#9

median nerve

#10

ulnar nerve

#11

ventral thoracic nerve

#12

phrenic nerve

#13

long thoracic nerve

#1

gluteus medius

#2

gluteus maximus

#3

piriformis

#4

sciatic nerve

#5

biceps femoris

#6

muscular branch of the sciatic nerve

#7

semimembranosus

#8

semitendinosus

#9

tibial nerve

#10

gluteus minimus

#11

vastus lateralis

#12

adductor femoris

#13

common fibular nerve

#14

gastrocnemius

#1

lateral branch of lumbar nerve

#2

medial branch of lumbar nerve

#3

lateral cutaneous nerve

#4

femoral nerve

#5

saphenous nerve

#6

lumbar nerve

#7

sympathetic trunk

#8

sympathetic ganglion

#9

obturator nerve

#1

Brachial nerve

#2

Axillary nerve

#3

Musculocutaneous nerve

#4

Radial nerve

#5

Median nerve