CBU A&P Practicum 2 - Heyman (muscles)

depressor labii inferioris

sternocleidomastoid
origin- manubrium, clavicle
insertion- mastoid process
action- neck flexion (head the ball!)

Scalenes (1 anterior, 2 middle, 3 posterior)

flexor digitorum superficialis
origin- medial epicondyle of humerus
insertion- phalanges 2-5
action- flexes fingers

gracilis

semimembranosus

(closest inside)

epicranius

orbucularis oculi

levator labii superioris

zygomaticus
Origin - zygomatic bone
Insertion- Obicularis Oris
Action- Smiling

depressor anguli oris

obicularis oris

mentalis

buccinators

masseter
origin- zygomatic bone
insertion- angle of mandible
action- chewing

temporalis

platysma

digastric
origin- mandible
insertion- hyoid bone
action- opens mouth

pectoralis major
origin- clavicle, sternum
insertion- upper humerus
action- flexes & medially rotates arm

serratus anterior

deltoid
origin- clavicle, scapula
insertion- deltoid tuberosity of humerus
action- abduction of arm

pectoralis minor

(behind pectoral is major)

trapezius
origin- spinous processes of vertebrae
insertion- spine of scapula
action- addict scapula

external intercostals

(outside like you can touch muscle)

internal intercostals

(on inside of rib cage)

diaphragm

rectus abdominis
origin- pubic crest
insertion- xiphoid process/costal cartilage
action- flexion of spine

external obliques

interal obliques

tranversus abdominis

latissimus dorsi
origin- vertebrae, iliac crest
insertion- upper humerus
action- adducts arm

infraspinatus

semispinalis

teres minor

teres major

supraspinatus

levator scapulae

rhomboids

brachialis

erector spinae (more superficial than semispinalis) ?(addition?)

triceps brachii
origin- glenoid cavity, posterior humerus
insertion- olecranon process
action- extends forearm/elbow

biceps brachii
origin- coraciod process, glenoid cavity
insertion- radial tuberosity
action- flexes forearm/elbow

brachioradialis

pronator teres

flexor carpi radialis

palmaris longus

flexor carpi ulnaris

extensor carpi ulnaris

extensor carpi radialis

extensor digitorum
origin- lateral epicondyle of humerus
insertion- phalanges 2-5
action- extends fingers

sartorius

adductor magnus

adductor longus

pectineus

rectus femoris
origin- acetabulum/ilium
insertion- patella/tibial tuberosity
action- extends lower leg/knew

gluteus maximus

vastus lateralis

vastus medialis

vastus intermedius

tensir fascia latae
(connects to IT band)

biceps femoris
origin- ischium and upper femur
insertion- head of fibula and condyle of tibia
action-flexes lower leg/knee

semitendinosus

FOUR QUADRICEP MUSCLES

Rectus femoris.
Vastus lateralis.
Vastus medialis.
Vastus intermedius

fibularis longus

gastrocnemius
origin-Medial and lateral condyles of femur
insertion- calcaneus
action-planter flexion

tibialis anterior
origin- Lateral condyle of tibia
insertion- metatarsals
action-dorsiflexion

soleus

flexor digitorum longus

flexor hallucis longus

THREE HAMSTRING MUSCLES

semitendinosus
semimembranosus
biceps femoris muscles