A&P Lecture Muscles Limbs (copy)

Supraspinatus

Name this

initiates abduction (unlocks shoulder for deltoid to ab), stabilizes joint

Action of Supraspinatus

Infraspinatus

Name this

Lateral rotation and extension (of arm)

Action of Infraspinatus

Teres Minor

Name this

Lateral Rotation and extension (of arm)

Action of Teres Minor

Subscapularis

Name this

Medial rotation of humerus

Action of Subscapularis

Coracobrachialis

Name this

flexes & adducts arm at SHOULDER

Action of Coracobrachialis

Biceps Brachii

Name this

Flexes elbow, supinates arm, flexes shoulder

Action of Biceps Brachii

Brachialis

Name this

flexes elbow

Action of Brachialis

Brachioradialis

Name this

Flexes forearm, aids in supination when in neutral position

Action of Brachioradialis

Triceps Brachii

Name this

extends arm and forearm; prime extender of elbow

Action of Triceps Brachii

Extensor Carpi Radialis Longus

Name this

extends wrist, fixes during finger extension

Action of Extensor Carpi Radialis Longus

Extensor carpi ulnaris

Name this

Extends wrist, fixes during finger extension

Action of Extensor carpi ulnaris

Extensor digitorum

Name this

Extends wrist, extends digits 2-5

Action of Extensor digitorum

Common flexor tendon (CFT); medial

Most FLEXORS originate from ____________ on _____ epicondyle of humerus

Common extensor tendon (CET); lateral

most EXTENSORS originate from ________ on ______ epicondyle of humerus

Flexor Carpi Radialis

Name this

Flex wrist (major), fixates wrist during digit flexion

Action of Flexor Carpi Radialis

Flexor Carpi Ulnaris

Name this

Flex wrist (major), fixates wrist during digit flexion

Action of flexor carpi ulnaris

flexor digitorum superficialis

Name this

flexes wrist, flexes digits 2-5 (major)

Action of flexor digitorum superficialis

Flexor digitorum profundus

Name this

flexes wrist, flexes digits 2-5 (major)

Action of Flexor digitorum profundus

Pronator teres

Name this

Pronates hand

Action of Pronator teres

Pronator Quadratus

Name this

prime pronator of foramen

Action of Pronator Quadratus

Supinator

Name this

supinates hand

Action of Supinator

Flexor & extensor pollicis muscles AND abductor & adductor pollicis muscles

Muscles of thumb

Thenar & hypothenar muscles

Intrinsic hand muscles

Iliopsoas (illiacus & psoas major)

Name this

Flexes trunk, flexes hip

Action of Iliopsoas

Gluteus Maximus

Name this

Hip extensor, laterally rotates

Action of Gluteus Maximus

Gluteus medius, minimus

Name this

Abducts hip, medially rotates hip

Action of Gluteus medius, minimus

Tensor Fascia Latae (TFL)

Name this

abducts and medially rotates hip, steadies thigh

Action of Tensor Fascia Latae

superior & inferior gemelli; Oburator externus & internus; piriformis & quadratus femoris

Lateral Hip rotators; all act laterally rotate the thigh

Adductor group (Adductor, longus, magnus, brevis)

name this

adducts hip, medial rotation

Action of Adductor group

Gracilis

Name this

adducts thigh, medially rotates leg at knee

Action of Gracilis

Sartorius (longest muscle in body)

Name this

Flexes, flexes knee (tailor's knee)

Action of Sartorius

Rectus Femoris (quad group)

Name this

Extends knee and flexes hip (does both b/c it crosses TWO joint)

Action of Rectus Femoris

Vastus lateralis, medialis, intermedius (quad group)

Name these

extends knee

action of Vastus lateralis, medialis, intermedius (quad group)

Biceps femoris (hamstring group)

Name this

Flexes knee, extends, and laterally rotates thigh

Action of Biceps femoris

Semitendinosus, semimebranosus (hamstring group)

Name these

Flexes knee, extends thigh

Action of Semitendinosus, semimebranosus

tibialis anterior

Name this

dorsiflexes foot

Action of tibialis anterior

Extensor digitorum (of foot)

Name this

Extends toes, dorsiflexes foot

Action of Extensor digitorum FOOT

Gastrocnemius

Name this

flexes knee, plantar flexes foot

Action of Gastrocnemius

Soleus

Name this

Plantar flexes foot (MOST powerful)

Action of Soleus

Fibularis muscles

evert and plantarflex

Deep pantarflexors

tibialis posterior, flexor digitorum, flexor hallucis (tom, dick, harry)