Practical 3 Muscles - McDowell LSC A&P 1

Masseter

zygomatic arch

origin of masseter

mandibular ramus

insertion of masseter

elevates mandible

action of masseter

temporalis

temporal fossa

origin of temporalis

coronoid process of mandible

insertion of temporalis

Sternocleidomastoid

clavicle and manubrium of sternum

origin of sternocleidomastoid

mastoid process of temporal bone

insertion of sternocleidomastoid

rectus abdominus

pubic crest and pubic symphysis

origin of rectus abdominis

xiphoid process and costal cartilages of ribs 5-7

insertion of rectus abdominis

levator scapulae

transverse processes of C1-C4

origin of levator scapulae

medial border of scapula

insertion of levator scapulae

rhomboid major

spinous process of T2-T5

origin of rhomboid major

medial border of scapula

insertion of rhomboid major

pectoralis major

clavicle, sternum, ribs

origin of pectoralis major

greater tubercle of humerus

insertion of pectoralis major

Deltoid

clavicle and scapula

origin of deltoid

deltoid tuberosity of humerus

insertion of deltoid

biceps branchii

long head: supraglenoid tubercle of scapula

short head: coracoid process of scapula

origin of biceps brachii

radial tuberosity

insertion of biceps brachii

Gastrocnemius

medial and lateral condyles of femur

origin of gastrocnemius

calcaneus

insertion of gastrocnemius

orbicularis oculi

orbicularis oris

Buccinator

Zygomaticus major and minor

mentalis

external oblique

internal oblique

transverse abdominis

diapragm

external intercostals

internal intercostals

trapezius

pectoralis minor

serratus anterior

Supraspinatus

Infraspinatus

teres minor

Subscapularis

supraspinatus, infraspinatus, teres minor, subscapularis

rotator cuff

latissimus dorsi

Brachialis

Brachioradialis

triceps brachii

Flexor carpal radialis muscle.

Flexor carpal ulnaris muscle.

Flexor digitorum profundus muscle.

Flexor digitorum superficialis muscle.

Flexor pollicis longus muscle.

Palmaris longus muscle.

Flexors of the wrist, hand, and fingers

extensor carpi radialis longus

extensor carpi radialis brevis

extensor digitorum

extensor digiti minimi

extensor carpi ulnaris

Extensors of the wrist, hand, and fingers

gluteus maximus

gluteus medius and minimus

Tensor facie latae

Sartorius

adductor longus

gracilis

biceps femoris

Semitendinosus

Semimembranosus

biceps femoris, semitendinosus, semimembranosus

hamstring muscles

rectus femoris

vastus intermedius

underneath rectus femoris

vastus lateralis

vastus medialis

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Quadraceps Femoris Group

tibialis anterior

Soleus

extensor digitorum longus