Origin, Insertion, Action

Origin: Body of sternum; medial clavicle; costal cartilages 2-6

Insertion: Internal part of intertubercular groove of humerus

Action: Prime mover of arm flexion; also adducts and medially rotates arm

• Origin: Ribs 3-5
• Insertion: Coracoid process of scapula 

• Origin: Occipital bone; ligamentum nuchae; Spinous process of C7-T12 vertebra 
• Insertion: Clavicle; acromion process and spine of scapula 

• Origin: Superior surface of pubis near symphysis 
• Insertion: Xiphoid process of sternum; inferior surface of ribs 5-7
• Action: Flexes vertebral column

• Origin: Acromial end of clavicle; acromion and spine of scapula 
• Insertion: Deltoid tuberosity of humerous 
• Action: Abducts the arm

• Origin: Supraspinous fossa of scapula 
• Insertion: Greater tubercle of humerus 

• Origin: Infraspinous fossa of scapula 
• Insertion: Greater tubercle of humerus 

• Origin: Upper dorsal lateral border of scapula
• Insertion: Greater tubercle of humerus

• Origin: Long head- Supraglenoid tibercle of scapula; Short head- Coracoid process of scapula 
• Insertion: Radial Tuberosity and bicipital aponeurosis

• Origin: Lateral supracondylar ridge of humerus 
• Insertion: Styloid process of radius

• Origin: Transverse process and bodies of T12-L15 vertebra 
• Insertion: Lesser trochanter of femur with Iliacus

• Origin: Iliac fossa
• Insertion: Lesser Trochanter of femur with psoas major

• Origin: Anterior superior iliac spine
• Insertion: Tibial tuberosity; medial side

• Origin: Inferior ramus and body of pubis 
• Insertion: Upper medial surface of tibia

• Origin: Pubis near pubic sympysis
• Insertion: Linea aspera of Femur

• Origin: Iliac crest and lateral surface of anterior superior iliac spine 
• Insertion: Iliotibial band/tract

• Origin: Iliac crest, sacrum, coccyx
• Insertion: Gluteal tuberosity of Femur; Iliotibial tract of fasciae late; Linea aspera
• Action: Extends the thigh (hip)

• Origin: Posterior iliac crest; lateral surface between posterior and anterior gluteal lines
• Insertion: Greater tronchanter of Femur
• Action: Abducts the thigh (hip)