HAP muscles landmark,orgins,insertions

splenius capitis

Splenius capitis orgin

C7-T4 posterior

Splenius capitis insertion

mastoid process and occipital bone

Splenius capitis action

cervical spine extension, ipsilateral rotation and flexion

Biceps brachii

Biceps brachii origin

Long headc-csuperglenoid tubercle

Short head - coracoid process scapula

Biceps brachii insertion

radial tuberosity of the radius (elbow area)

Biceps Brachii action

flexes radius and humerus and supinates. forearm

External intercostals

External intercostals orgin

inferior border at ribcage

External intercostals insertion

superoir border of rib below

External intercostals action

elevates rib cage during inspiration

external oblique

External obliques origin

external surface of lower 8 ribs

external oblique insertion

anterior half of iliac crest and linca alba

external oblique action

compresses abdomine, contraclaterally rotates and flexes vertebral colum

pectoralis major

pectoralis major origin

medial half of clavical, sternum costal cartilages, aponeurosis of external abdominal oblique (bascically the sternum)

pectoralis major insertion

intertubular groove of humerus (top part of humerus)

pectoralis major action

flexes, adducts and medially rotates humerus, draws body upward in climbing

quadratus lumborum

quadratus lumborum origin

ilolumbar liagament and iliac crest

quadratus lumborum insertion

lower border of 12th rib, transverse process of upper lumbar vertebre

quadratus lumborum action

deoresses ribcage inferiorlt and l aterally flexes trunk

Tricpes brachii

Triceps Brachii origin

Long head - infraglenoid tubercle

lateral head - proximal portion of posterior humerus

medial - distal ahlf of posterior humerus

Tricpes Brachii insertion

olecroanon process of ulna

Triceps brachii action

extends humerus ulna

Bicep femoris origin

Long head - ischtal tuberosity

short head- lateral supercondyle ridge on femur

Bicep femoris

Bicep femoris insertion

head of fibula and lateral condyle of tibia

Bicep femoris action

extedns femur and flexes leg

sartorius

sartorius origin

anterior superior iliac spine

sartorius insertion

medial margin of tibial tuberosity

sartorius action

flexes both femur and tibia

vastus lateralis

vastus lateralis origin

interrochantare line and linea aspra of femur

vastus lateralis insertion

tibial tuberosity

vastus lateralis action

extend tibia

tibialis anterior

tibialis anterior origin

upper half of tibia and intercosseous membrane

tibialis anterior insertion

base of first cuneiform and first metatarsal

tibialis anterior action

dorsiflexes and inverts foot

Gastrocnemius

Gastrocnemius origin

medial and lateral condyles of femur

Gastrocnemius insertion

with soleus into calcaneus via calcaneal tendon

Gastrocnemius action

flexes tibia and plantar, flexes foot

buccinator

buccinator origin

maxilla and mandible

buccinator insertion

orbicularis oris

buccinator action

presses cheeks against teeth and lips, draws corner of mouth from side to side, helps in chewing