CELL220 Lab #4

Trapezius

O: external occipital protuberance, superior nuchal line, spinous process of C7-T12

I: clavicle, acromion process, spine of scapula

O:

I:

deltoid

O: clavicle, acromion process, and spine of scapula

I: deltoid tuberosity

O:

I:

levator scapulae

rhomboid major

rhomboid minor

supraspinatus

infraspinatus

teres major

teres minor

subscapularis

serratus anterior

latissimus dorsi

thoracolumbar fascia

pectoralis major

pectoralis minor

coracobrachialis

biceps brachii

O: supraglenoid tubercle and coracoid process

I: radial tuberosity

O:

I:

triceps brachii

O: infraglenoid tubercle and posterior shaft of humerus

I: olecranon process

O:

I:

brachialis

brachioradialis

extensor carpi radialis longus

extensor carpi radialis brevis

abductor pollicis longus

extensor pollicis brevis

extensor pollicis longus

extensor digitorum

O: lateral epicondyle of humerus

I: digits 2-5

O:

I:

extensor digiti minimi

extensor indicis

extensor carpi ulnaris

anconeus

flexor digitorum profundus

flexor carpi ulnaris

palmaris longus

flexor digitorum superficialis

O: medial epicondyle of the humerus

I: digits 2-5

O:

I:

flexor carpi radialis

supinator

pronator teres

flexor pollicis longus

pronator quadratus

thenar muscles

hypothenar muscles

lumbricals

musculocutaneous nerve

I: anterior arm

Innervates:

median nerve

I: anterior forearm and thenar region

innervates:

ulnar nerve

I: hand, except thenar region

innervates:

radial nerve

I: posterior arm and posterior forearm

Innervates:

axillary nerve

I: shoulder

innervates:

epicranius

frontalis

galea aponeurotica

occipitalis

temporalis

orbicularis oculi

procerus

nasalis

levator labii superioris

levator anguli oris

zygomaticus

masseter

O: zygomatic arch and maxilla

I: angle and ramus of mandible

O:

I:

orbicularis oris

depressor anguli oris

depressor labii inferioris

mentalis

platysma

omohyoid

sternohyoid

thyrohyoid

digastric

mylohyoid

sternocleidomastoid

O: manubrium and sternal end of clavicle

I: mastoid process

O:

I:

scalenes

Epicraneus

Frontalis, galea aponeurotica, occipitalis

Flexes shoulder and flexes elbow

Action: Anterior arm

extend at the shoulder and elbow

Action: Posterior arm

Flexes wrist and flexes digits

Action: Anterior forearm

Extends wrist and extends digits

Action: Posterior forearm