Origins and Insertions Flashcards

Tibialis anterior
O: Lateral condyle of tibia
I: Inferior medial cuneiform, 1st metatarsal
Dorsiflexes, inverts foot

Action Only
Trapezius
Stabilizes, raises, retracts, rotates scapula
ID Only

Quadratus Femoris
ID Only

Teres Major
ID Only

Extensor Hallucis longus
Action only

Peroneus longus
Plantar flexes, everts foot
ID Only

Superior Gemellus
ID Only

Piriformis


Adductor magnus
O: Pubis and ischium
I: Linea aspera
Adducts, medially rotates, flexes, extends thigh
ID Only

Flexor hallucis longus
ID only

Teres Minor

Deltoid
O: Clavicle and scapula
I: Deltoid tuberosity of humerus
Abducts, flexes, extends, laterally, medially rotates arm
ID Only
Obterator externus

Pectoralis Major
O: sternum and clavicle
I: Greater tubercle of humerus
Flexes, medially rotates, adducts arm

The Medial muscle

Triceps brachii – long head
O: Infraglenoid tubercle of scapula
I: Olecranon process of ulna
Extends forearm
ID only

Flexor Digitorum Longus


Gastrocnemius
O: Medial, lateral condyles of femur
I: Posterior calcaneus
Plantar flexes foot; flexes knee


Vastus medialis
O: Linea aspera
I: Patella and tibial tuberosity
Extends knee
Semitendinosus
O: Ischial tuberosity
I: Medial condyle of tibia
Extends thigh; flexes knee; medially rotates leg
ID Only

External Intercostals
ID Only

Inferior Gemellus


Rectus Femoris
O: Anterior iliac crest
I: Patella and tibial tuberosity
Extends knee, flexes thigh

Vastus lateralis
O: Greater trochanter
I: Patella and tibial tuberosity
Extends knee
Top Line

Biceps Brachii - long head
O: superior rim of glenoid cavity
I: radial tuberosity
Flexes elbow, supinates forearm, weak arm flexor

ID Only

Pectineus


Sartorius
O: Anterior iliac crest
I: Medial, proximal tibia
Flexes, abducts, laterally rotates thigh; flexes knee

Semimembranosus
O: Ischial tuberosity
I: Medial condyle of tibia
Extends thigh; flexes knee; medially rotates leg

Brachioradialis
O: Distal lateral humerus
I: Styloid process of radius
Flexes forearm
The lateral muscle

Triceps brachii – lateral head (and medial head)
O: Posterior humerus
I: Olecranon process of ulna
Extends forearm


Adductor longus
O: Pubis
I: Linea aspera
Adducts, medially rotates thigh
Bottom Line

Biceps brachii- short head
O: Coarcoid process
I: Radial tuberosity
Flexes elbow, supinates forearm, weak arm flexor


Biceps femoris long head
O: Ischial tuberosity
I: Head of fibula
Extends thigh; flexes knee; laterally rotates leg

ID Only

Obtuator Internus


Gluetus maximus
O: Posterior ileum
I: Posterior femur
Extends, laterally rotates, abducts thigh

Soleus
O: Superior tibia, fibula
I: Posterior calcaneus
Plantar flexes foot

ID Only

Internal Intercostals