Muscle	Origin	Insertion	Movement
Triceps brachii	Long head:infraglenoid of tubercle  lateral head: above the radial sulcus Medial head: below the radial sulcus	Posterior part of the upper surface of the olecranon proses of ulna and posterior captse	Extends elbow .Long head stabalises shoulder. Medal head. Medal head retracts captse of elbow joint on extension.
vastus lateralis	eater trochanter, Intertrochanteric line, and Linea aspera of the FemurGr	Patella via the Quadriceps tendon and Tibial tuberosity via the Patellar ligament	Extends and stabilizes knee
trapezius	external occipital protuberance, nuchal ligament, medial superior nuchal line, spinous processes of vertebrae C7-T12	posterior border of the lateral third of the clavicle, acromion process, and spine of scapula	rotation, retraction, elevation, and depression of scapula
deltoid	the anterior border and upper surface of the lateral third of the clavicle, acromion, spine of the scapula	deltoid tuberosity of humerus	shoulder abduction, flexion and extension
sternocleidomastoid	Manubrium sterni and medial portion of the clavicle	Mastoid process of the temporal bone, superior nuchal line	Unilaterally; cervical rotation to opposite side, cervical lateral flexion to same side Bilaterally; cervical flexion, raises the sternum and assists in forced inspiration.
pectoralis major	Clavicular head: anterior surface of the medial half of the clavicle. Sternocostal head: anterior surface of the sternum, the superior sixcostal cartilages, and theaponeurosis of the external oblique muscle	Lateral lip of the bicipital groove of the humerus (anteromedial proximal humerus)	Clavicular head: flexes the humerus Sternocostal head: extends the humerus As a whole, adducts and medially rotates the humerus. It also draws the scapula anteriorly and inferiorly
serratus anterior	fleshy slips from the outer surface of upper 8 or 9 ribs	costal aspect of medial margin of the scapula	protracts and stabilizes scapula, assists in upward rotation.
external oblique	Ribs 5-12	Iliac crest, Pubic tubercle, Linea alba	Contralateral rotation of torso
adductors	Pubis	Femur and tibia	Adduction of hip
soleus	fibula, medial border of tibia	tendo calcaneus	plantarflexion (extension or flexion of the foot at the ankle)
Latissimus dorsi	Spinous processes of vertebraeT7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs andinferior angle of scapula	Floor of intertubercular groove of the humerus	Adducts, extends and internally rotates the arm when the insertion is moved towards the origin. When observing the muscle action of the origin towards the insertion, the lats are a very powerful rotator of the trunk.
semitendinosus	Tuberosity of the ischium	Pes anserinus (tibia)

Flexion of knee, extension of thehip joint

Insertion

Movement