Muscular system (Ted Wilson bio 211)

Frontalis

Elevates eyebrows and facial expressions

Occipitalis

Tenses and retracts scalp

Orbicularis Oculi

Closes eyelids; used in blinking, winking, and squinting

Orbicularis oris

closes and protrudes lips

Mentalis

Elevates and protrudes lower lip

Masseter

elevates mandible

Temporalis

elevates and retracts mandible

Sternocleidomastoid

flexes neck; rotates head

Digastric

depresses mandible

Omohyoid

depresses hyoid

Sternohyoid

depresses hyoid

intercostal muscles

muscles between the ribs

Pectoralis major

Adducts and flexes humerus

Pectoralis minor

protracts and depresses scapula

Deltoid

shoulder

Trapezius

Elevates, depresses, retracts, and rotates the scapula; rotates the arm

Latissimus dorsi

extends and adducts humerus

Supraspinatus

abducts arm

Infraspinatus

rotates arm laterally

Rhomboid major

retracts scapula

Rhomboid minor

retracts scapula

Triceps brachii

extends elbow

Biceps brachii

Flexes and supinates forearm

Brachialis

elbow flexion

Brachioradialis

flexes elbow

Palmaris Longus

flexes hand

Flexor capri radialis

flexes wrist (radius) and abducts hand

Flexor capri ulnaris

flexes wrist (ulna) and adducts hand

flexor digitorum superficialis

flexes wrist and middle phalanges of fingers 2-5

Extensor capri ulnaris

extends and adducts wrist

Extensor digitorum

extends fingers

Extensor pollicis longus

extends thumb

Abductor pollicis longus

abducts thumb

Extensor indicis

extends index finger

external oblique

Compresses abdomen; laterally flexes and rotates vertebral column

Internal oblique

tenses abdominal wall and compresses abdominal contents

Transversus abdominus

compresses abdominal contents

Rectus abdominus

abs

External intercostals

elevates ribs during inspiration

Internal Intercostals

depresses ribs during forced expiration

Diaphragm

Large, flat muscle at the bottom of the chest cavity that helps with breathing

Sartorius

Flexes, abducts, and laterally rotates thigh at the hip; flexes knee

Quadriceps femoris group

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Rectus femoris

extends leg and flexes thigh

vastus lateralis

extends leg at knee

vastus medialis

extends knee(medial)

vastus intermedius

extends knee (inter)

Adductor magnus

adducts thigh

Adductor longus

adducts, flexes, and medially rotates thigh

Gracilis

adducts thigh, flexes and medially rotates leg

Gluteus maximus

extends thigh

Gluteus medius

abducts and medially rotates thigh

Biceps femoris

flexes leg and extends thigh

Semitendinosus

Flexes leg at the knee and extends thigh at the hip; belongs to the hamstring group

Semimembranosus

same as semitendinosus

Gastrocnemius

plantar flexes foot

Soleus

plantar flexion

Tibialis posterior

Plantar flexion and inversion of foot

Tibialis anterior

dorsiflexes and inverts foot

Extensor digitorum longus

extends toes

Temporalis location

Temporal bone

Temporalis function

Elevation, retraction and medial excursion of mandible

Temporalis orgin

temporal fossa

Temporalis insertion

Coronoid process

Digastric location

lower jaw

Digastric function

open's mouth

Digastric orgin

Fossa of mandible

Digastric insertion

hyoid bone

Sternocleidomastoid location

Anterior of neck

Sternocleidomastoid function

tilt's head

Sternocleidomastoid orgin

manubrium of sternum

Sternocleidomastoid insertion

Mastoid process

deltoid location

Shoulder

Deltoid function

Flex and rotate arm

Deltoid orgin

Spine of scapula

Deltoid insertion

Deltoid tuberosity of humerus

Biceps Brachii location

upper arm

Biceps Brachii function

flexion of arm

Biceps Brachii orgin

Glenoid cavity

Biceps Brachii insertion

Tuberosity of radius

flexor digitorum superficialis location

anterior of wrist

flexor digitorum superficialis function

flexes wrist

flexor digitorum superficialis orgin

medial epicondyle of humerus

Flexor digitorum superficialis insertion

Phalanges 2-5

Extensor digitorum location

Posterior of wrist

extensor digitorum function

extends wrist

extensor digitorum orgin

lateral epicondyle of humerus

extensor digitorum insertion

phalanges 2-5

Rectus abdominus location

Anterior of abdomen

rectus abdominus function

flexes waist

rectus abdominus orgin

Pubic symphasis

rectus abdominus insertion

xiphoid process

sartorius location

Anterior of thigh

sartorius function

hip and knee flexion

sartorius orgin

Spine of ilium

Sartorius insertion

End of tibia

Semitendinosus location

Posterior of thigh

Semitendinosus function

Flexes knee

Semitendinosus orgin

ischial tuberosity

Semitendinosus insertion

Upper tibia