Muscles of Appendicular Skeleton Flashcards

Teres major
- Action: Extend, rotate, adduct humerus
- Origin: Posterior & inferior angle of scapula
- Insertion: Intertubercle sulcus of humerus

Flexor Carpi Radialis
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmer aponeurosis

Gluteus minimus
- Action: Abduct & medially rotate thigh
- Origin: Inferior surface of ilium
- Insertion: Greater trochanter of femur

Extensor carpi radialis
Brevis & longus
- Action: Extend & abduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpals 2 and 3

Trapezius
- Action: Extends head, moves scapula
- Origin: Occiput, spinous process of C7-T12
- Insertion: Scapular spine & acromion process, lateral clavicle

Coracobrachialis
- Action: Adduction & flexion of shoulder
- Origin: Coracoid process
- Insertion: Shaft of humerus

Piriformis
- Action: Lateral rotation & abduction of hip
- Origin: Sacrum
- Insertion: Greater trochanger of femur

Pectoralis minor
- Action: Draws scapula forward
- Origin: Anterior surface of ribs 3-5
- Insertion: Coracoid process of scapula

Palmaris longus
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmar aponeurosis

Supraspinatus
- Action: Abduct humerus
- Origin: Supraspinous fossa
- Insertion: Greater tubercle of humerus

Piriformis
- Action: Lateral rotation & abduction of hip
- Origin: Sacrum
- Insertion: Greater trochanger of femur

Palmaris longus
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmar aponeurosis

Flexor carpi
- Action: Flexion & adduction of wrist
- Origin: Medial epicondyle of humerus & olecranon of ulna
- Insertion: Pisiform, hamate, and 5th metacarpal

Teres minor
- Action: Rotate humerus
- Origin: Lateral margin of scapula
- Insertion: Greater tubercle of humerus

Deltoid
- Action: Adduct humerus
- Origin: Clavicle, acromion & spine of scapula
- Insertion: Deltoid tuberosity

Infraspinatus
- Action: Rotate humerus
- Origin: Infraspinous fossa
- Insertion: Greater tubercle of humerus

Flexor Carpi Radialis
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmer aponeurosis

Biceps brachii
- Action: Flexion of elbow & supination of forearm
- Origin: Coracoid process, glenoid cavity, intertubercle sulcus
- Insertion: Radial tuberosity

Coracobrachialis
- Action: Adduction & flexion of shoulder
- Origin: Coracoid process
- Insertion: Shaft of humerus

Coracobrachialis
- Action: Adduction & flexion of shoulder
- Origin: Coracoid process
- Insertion: Shaft of humerus

Subscapularis
- Action: Rotate humerus
- Origin: Subscapular fossa
- Insertion: Lesser tubercle of humerus

Gluteus minimus
- Action: Abduct & medially rotate thigh
- Origin: Inferior surface of ilium
- Insertion: Greater trochanter of femur

Tibialis posterior
Action: Inversion, plantar flexion
Origin: Superior tibia & fibula
Insertion: Tarsals & metatarsals 2-4

Deltoid
- Action: Adduct humerus
- Origin: Clavicle, acromion & spine of scapula
- Insertion: Deltoid tuberosity

Coracobrachialis
- Action: Adduction & flexion of shoulder
- Origin: Coracoid process
- Insertion: Shaft of humerus

Brachioradialis
- Action: Synergist of elbow flexion
- Origin: Distal humerus
- Insertion: Styloid process of radius

Tibialis posterior
- Action: Inversion, plantar flexion
- Origin: Superior tibia & fibula
- Insertion: Tarsals & metatarsals 2-4

Teres major
- Action: Extend, rotate, adduct humerus
- Origin: Posterior & inferior angle of scapula
- Insertion: Intertubercle sulcus of humerus

Pectoralis major
- Action: Flexes & adducts arm
- Origin: Clavicle, sternum, ribs 1-6
- Insertion: Intertubercle sulcus of humerus

Popliteus
- Action: Medial flexion & rotate knee
- Origin: Lateral condyle of femur
- Insertion: Proximal tibia

Latissimus doris
- Action: Extend, abduct, & rotate arm
- Origin: Spinous process T6-L5
- Insertion: Intertubercle sulcus of humerus

Extensor carpi ulnaris
- Action: Extend & adduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpal 5

Palmaris longus
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmar aponeurosis

Extensor carpi radialis
Brevis & longus
- Action: Extend & abduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpals 2 and 3

Gluteus medius
- Action: Abduct & medially rotate thigh
- Origin: Upper surface ilium
- Insertion: Greater trochanter of femur

Triceps brachii
- Action: Forearm extension
- Origin: Glenoid cavity, radial groove of humerus
- Insertion: Olecranon process of ulna

Latissimus doris
- Action: Extend, abduct, & rotate arm
- Origin: Spinous process T6-L5
- Insertion: Intertubercle sulcus of humerus

Extensor digitorum
- Action: Finger extension
- Origin: Lateral epicondyle of humerus
- Insertion: Distal phalanges 2-5

Subscapularis
- Action: Rotate humerus
- Origin: Subscapular fossa
- Insertion: Lesser tubercle of humerus

Infraspinatus
- Action: Rotate humerus
- Origin: Infraspinous fossa
- Insertion: Greater tubercle of humerus

Popliteus
- Action: Medial flexion & rotate knee
- Origin: Lateral condyle of femur
- Insertion: Proximal tibia

Trapezius
- Action: Extends head, moves scapula
- Origin: Occiput, spinous process of C7-T12
- Insertion: Scapular spine & acromion process, lateral clavicle

Flexor carpi
- Action: Flexion & adduction of wrist
- Origin: Medial epicondyle of humerus & olecranon of ulna
- Insertion: Pisiform, hamate, and 5th metacarpal

Pectoralis major
- Action: Flexes & adducts arm
- Origin: Clavicle, sternum, ribs 1-6
- Insertion: Intertubercle sulcus of humerus

Brachialis
- Action: Flexor of elbow
- Origin: Distal anterior of humerus
- Insertion: Coronoid process

Rhomboids
- Action: Pulls scapula medially
- Origin: Spinous processes of C7-T3
- Insertion: Medial border of scapula

Teres minor
- Action: Rotate humerus
- Origin: Lateral margin of scapula
- Insertion: Greater tubercle of humerus

Triceps brachii
- Action: Forearm extension
- Origin: Glenoid cavity, radial groove of humerus
- Insertion: Olecranon process of ulna

Gluteus medius
- Action: Abduct & medially rotate thigh
- Origin: Upper surface ilium
- Insertion: Greater trochanter of femur

Extensor carpi ulnaris
- Action: Extend & adduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpal 5

Rhomboids
- Action: Pulls scapula medially
- Origin: Spinous processes of C7-T3
- Insertion: Medial border of scapula

Extensor digitorum
- Action: Finger extension
- Origin: Lateral epicondyle of humerus
- Insertion: Distal phalanges 2-5

Teres minor
- Action: Rotate humerus
- Origin: Lateral margin of scapula
- Insertion: Greater tubercle of humerus

Palmaris longus
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmar aponeurosis

Flexor Carpi Radialis
- Action: Flexor of wrist
- Origin: Medial epicondyle of humerus
- Insertion: Palmer aponeurosis

Infraspinatus
- Action: Rotate humerus
- Origin: Infraspinous fossa
- Insertion: Greater tubercle of humerus

Supraspinatus
Action: Abduct humerus
Origin: Supraspinous fossa
Insertion: Greater tubercle of humerus

Pectoralis minor
- Action: Draws scapula forward
- Origin: Anterior surface of ribs 3-5
- Insertion: Coracoid process of scapula

Pronator Teres
- Action: Pronation of forearm
- Origin: Medial epicondyle of humerus, coronoid process of ulna
- Insertion: Radius

Biceps brachii
- Action: Flexion of elbow & supination of forearm
- Origin: Coracoid process, glenoid cavity, intertubercle sulcus
- Insertion: Radial tuberosity

Extensor carpi ulnaris
- Action: Extend & adduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpal 5

Triceps brachii
- Action: Forearm extension
- Origin: Glenoid cavity, radial groove of humerus
- Insertion: Olecranon process of ulna

Extensor carpi radialis
Brevis & longus
- Action: Extend & abduct wrist
- Origin: Lateral epicondyle of humerus
- Insertion: Base of metacarpals 2 and 3

Deltoid
- Action: Adduct humerus
- Origin: Clavicle, acromion & spine of scapula
- Insertion: Deltoid tuberosity

Gluteus medius
- Action: Abduct & medially rotate thigh
- Origin: Upper surface ilium
- Insertion: Greater trochanter of femur

Pronator Teres
- Action: Pronation of forearm
- Origin: Medial epicondyle of humerus, coronoid process of ulna
- Insertion: Radius

Biceps brachii
- Action: Flexion of elbow & supination of forearm
- Origin: Coracoid process, glenoid cavity, intertubercle sulcus
- Insertion: Radial tuberosity

Teres major
- Action: Extend, rotate, adduct humerus
- Origin: Posterior & inferior angle of scapula
- Insertion: Intertubercle sulcus of humerus

Rhomboids
- Action: Pulls scapula medially
- Origin: Spinous processes of C7-T3
- Insertion: Medial border of scapula

Extensor digitorum
- Action: Finger extension
- Origin: Lateral epicondyle of humerus
- Insertion: Distal phalanges 2-5

Pectoralis major
- Action: Flexes & adducts arm
- Origin: Clavicle, sternum, ribs 1-6
- Insertion: Intertubercle sulcus of humerus

Teres major
- Action: Extend, rotate, adduct humerus
- Origin: Posterior & inferior angle of scapula
- Insertion: Intertubercle sulcus of humerus

Tibialis posterior
- Action: Inversion, plantar flexion
- Origin: Superior tibia & fibula
- Insertion: Tarsals & metatarsals 2-4

Pectoralis major
- Action: Flexes & adducts arm
- Origin: Clavicle, sternum, ribs 1-6
- Insertion: Intertubercle sulcus of humerus

Piriformis
- Action: Lateral rotation & abduction of hip
- Origin: Sacrum
- Insertion: Greater trochanger of femur

Brachioradialis
- Action: Synergist of elbow flexion
- Origin: Distal humerus
- Insertion: Styloid process of radius

Pectoralis minor
- Action: Draws scapula forward
- Origin: Anterior surface of ribs 3-5
- Insertion: Coracoid process of scapula

Supraspinatus
- Action: Abduct humerus
- Origin: Supraspinous fossa
- Insertion: Greater tubercle of humerus

Popliteus
- Action: Medial flexion & rotate knee
- Origin: Lateral condyle of femur
- Insertion: Proximal tibia

Gluteus minimus
- Action: Abduct & medially rotate thigh
- Origin: Inferior surface of ilium
- Insertion: Greater trochanter of femur

Subscapularis
- Action: Rotate humerus
- Origin: Subscapular fossa
- Insertion: Lesser tubercle of humerus

Brachialis
- Action: Flexor of elbow
- Origin: Distal anterior of humerus
- Insertion: Coronoid process

Brachioradialis
- Action: Synergist of elbow flexion
- Origin: Distal humerus
- Insertion: Styloid process of radius

Pronator Teres
- Action: Pronation of forearm
- Origin: Medial epicondyle of humerus, coronoid process of ulna
- Insertion: Radius

Flexor carpi
- Action: Flexion & adduction of wrist
- Origin: Medial epicondyle of humerus & olecranon of ulna
- Insertion: Pisiform, hamate, and 5th metacarpal

Tibialis posterior
- Action: Inversion, plantar flexion
- Origin: Superior tibia & fibula
- Insertion: Tarsals & metatarsals 2-4

Soleus
- Action: Plantar flexion
- Origin: Proximal tibia & fibula
- Insertion: Calcaneus

Soleus
- Action: Plantar flexion
- Origin: Proximal tibia & fibula
- Insertion: Calcaneus

Soleus
- Action: Plantar flexion
- Origin: Proximal tibia & fibula
- Insertion: Calcaneus

Gastrocnemius
- Action: Plantar flexion
- Origin: Medial & lateral condyle of femur
- Insertion: Calcaneus

Gastrocnemius
- Action: Plantar flexion
- Origin: Medial & lateral condyle of femur
- Insertion: Calcaneus

Gastrocnemius
- Action: Plantar flexion
- Origin: Medial & lateral condyle of femur
- Insertion: Calcaneus

Extensor digitorum longus
- Action: Toe extension, dorsiflexion
- Origin:Lateral condyle of tibia & proximal fibula
- Insertion: Middle & distal phalanges of toes 2-5

Extensor digitorum longus
- Action: Toe extension, dorsiflexion
- Origin:Lateral condyle of tibia & proximal fibula
- Insertion: Middle & distal phalanges of toes 2-5

Extensor digitorum longus
- Action: Toe extension, dorsiflexion
- Origin:Lateral condyle of tibia & proximal fibula
- Insertion: Middle & distal phalanges of toes 2-5

Tibialis anterior
- Action: Dorsiflexion & inversion
- Origin: Lateral condyle of tibia & interosseous membrane
- Insertion: Cuneiform & metatarsal 1

Tibialis anterior
- Action: Dorsiflexion & inversion
- Origin: Lateral condyle of tibia & interosseous membrane
- Insertion: Cuneiform & metatarsal 1

Tibialis anterior
- Action: Dorsiflexion & inversion
- Origin: Lateral condyle of tibia & interosseous membrane
- Insertion: Cuneiform & metatarsal 1

Fibularis (peroneus) longus
- Action: Plantar flexion
- Origin: Proximal fibula
- Insertion: Metatarsal 1 & medial cuneiform

Fibularis (peroneus) longus
- Action: Plantar flexion
- Origin: Proximal fibula
- Insertion: Metatarsal 1 & medial cuneiform

Fibularis (peroneus) longus
- Action: Plantar flexion
- Origin: Proximal fibula
- Insertion: Metatarsal 1 & medial cuneiform

Fibularis (peroneus) brevis
- Action: Plantar flexion
- Origin: Distal fibula
- Insertion: Metatarsal 5

Fibularis (peroneus) brevis
- Action: Plantar flexion
- Origin: Distal fibula
- Insertion: Metatarsal 5

Fibularis (peroneus) brevis
- Action: Plantar flexion
- Origin: Distal fibula
- Insertion: Metatarsal 5

Gluteus maximus
- Action: Thigh extensor
- Origin: Ilium, sacrum, coccyx
- Insertion: Gluteal tuberosity of femur

Gluteus maximus
- Action: Thigh extensor
- Origin: Ilium, sacrum, coccyx
- Insertion: Gluteal tuberosity of femur

Gluteus maximus
- Action: Thigh extensor
- Origin: Ilium, sacrum, coccyx
- Insertion: Gluteal tuberosity of femur

Tensor Fasciae Latae
- Action: Flex, abduct, & medially rotate thigh
- Origin: Iliac crest & ASIS
- Insertion: Fasciae lateral, iliotibial tract (IT band)

Tensor Fasciae Latae
- Action: Flex, abduct, & medially rotate thigh
- Origin: Iliac crest & ASIS
- Insertion: Fasciae lateral, iliotibial tract (IT band)

Tensor Fasciae Latae
- Action: Flex, abduct, & medially rotate thigh
- Origin: Iliac crest & ASIS
- Insertion: Fasciae lateral, iliotibial tract (IT band)

Sartorius
- Action: Flex knee, abduct & laterally rotate thigh
- Origin: ASIS
- Insertion: Proximal tibia

Sartorius
- Action: Flex knee, abduct & laterally rotate thigh
- Origin: ASIS
- Insertion: Proximal tibia

Sartorius
- Action: Flex knee, abduct & laterally rotate thigh
- Origin: ASIS
- Insertion: Proximal tibia

Iliacus
- Action: Flexion of hip
- Origin: Iliac fossa
- Insertion: Just inferior to lesser trochanter of femur

Iliacus
- Action: Flexion of hip
- Origin: Iliac fossa
- Insertion: Just inferior to lesser trochanter of femur

Iliacus
- Action: Flexion of hip
- Origin: Iliac fossa
- Insertion: Just inferior to lesser trochanter of femur

Psoas major
- Action: Flexion at hip or lumbar intervertebrals
- Origin: Transverse process of T12-L5
- Insertion: Lesser trochanter of femur

Psoas major
- Action: Flexion at hip or lumbar intervertebrals
- Origin: Transverse process of T12-L5
- Insertion: Lesser trochanter of femur

Psoas major
- Action: Flexion at hip or lumbar intervertebrals
- Origin: Transverse process of T12-L5
- Insertion: Lesser trochanter of femur

Adductors
Magnus, longus, & brevis
- Action: Adduct, medially rotate, & flex thigh
- Origin: Ischium, pubis
- Insertion: Linea aspera, adductor tubercle

Adductors
Magnus
- Action: Adduct, medially rotate, & flex thigh
- Origin: Ischium, pubis
- Insertion: Linea aspera, adductor tubercle

Adductors
Longus
- Action: Adduct, medially rotate, & flex thigh
- Origin: Ischium, pubis
- Insertion: Linea aspera, adductor tubercle

Adductors
Brevis
- Action: Adduct, medially rotate, & flex thigh
- Origin: Ischium, pubis
- Insertion: Linea aspera, adductor tubercle

Gracilis
- Action: Adduct thigh, medially rotate, & flex knee
- Origin: Inferior ramus & pubis
- Insertion: Medial tibia

Gracilis
- Action: Adduct thigh, medially rotate, & flex knee
- Origin: Inferior ramus & pubis
- Insertion: Medial tibia

Gracilis
- Action: Adduct thigh, medially rotate, & flex knee
- Origin: Inferior ramus & pubis
- Insertion: Medial tibia