Anatomy Lab 3 Origin, insertion, innervation, actions

Rectus abdominis O, I

O - public crest, public symphysis I - costal cartilage of ribs 5-7, xiphoid process

Trapezius O, I

O - external occipital protuberance, superior nuchal line, spinous process of c7-t12 I -clavicle, acromion process, spine of scapula

gluteus medius o, I

O gluteal surface I greater trochanter

sartorius O, I

O - anterior superior iliac spine I -proximal part of the medial surface of the tibia

Gracilis O, I

O - inferior pubic ramus I - proximal part of the medial surface of the tibia

tibialis anterior O, I

O - lateral surface of the tibia I - medial cuneiform and first metatarsal

fibularis O, I

O - lateral surface of the fibula I- medial cuneiform and first metatarsal

flexor hallucis longus O, I

O - posterior surface of the fibula I - first digit

femoral nerve innervation

anterior compartment of thigh

sciatic nerve innervation

posterior compartment of thigh

tibial nerve

posterior compartment of leg

Common fibular nerve

anterior and lateral compartment of leg

Gluteal region action

abduction, extension, and rotation at hip joint

posterior compartment of thigh

extension at hip joint, flexion at knee joint

Anterior compartment of thigh

flexion at hip joint, extension at kneww joint

medial compartment of thigh

adduction at hip joint

anterior compartment of leg

dorsiflextion of foot, extension of digits

lateral compartmenet of legs

eversion of foot

posterior compartment of leg

plantar flexion of the foot, flexion of the digits