BioSci202 Muscles (11-20) (Specifics split up)

iliopsas

.

gluteus maximus

.

rectus femoris

.

biceps femoris

.

Gastrocnemius

.

tibialis anterior

.

supraspinatus

.

infraspinatus

.

teres minor

.

subscapularis

.

iliopsas action

action: flexion of the hip; external rotation of femur

iliopsas origin

origin: inner surface of ilium

iliopsas insertion

insertion: femur and ilium

gluteus maximus action

action: extension, external rotation, adduction of hip

gluteus maximus insertion

insertion: femur

gluteus maximus origin

origin: iliac crest, sacrum, coccyx

rectus femoris action

action: extension of the knee and flexion of the hip

rectus femoris origin

origin: iliac spine, acetabulum

rectus femoris insertion

insertion: patella, tibial tuberosity

biceps femoris action

action: flexion of knee, extension of hip, external rotation of hip and knee

biceps femoris origin

origin: ischial tuberosity, linea aspera

biceps femoris insertion

insertion: Lateral condyle of tibia and head of fibula

gastrocnemius action

action: flexion of ankle

Gastrocnemius origin

origin: femoral condyle

Gastrocnemius insertion

insertion: calcaneus

tibialis anterior action

action: dorsiflexion of the ankle and inversion of the foot

tibialis anterior insertion

insertion: cuneiform and first metatarsal

tibialis anterior origin

origin: tibia

supraspinatus action

action: stabilizes glenohumeral joint and abduction GHJ

supraspinatus insertion

insertion: Superiorly on the greater tubercle of the humerus

supraspinatus origin

origin: supraspinous fossa of the scapula

infraspinatus action

action: stabilizes GHJ, external rotation, horizontal abduction and extension of the GHJ

infraspinatus origin

origin: infraspinous fossa of the scapula

infraspinatus insertion

insertion: Posteriorly on the greater tubercle of the humerus

teres minor action

action: stabilizes GHJ, external rotation, horizontal abduction, extension of GHJ

teres minor origin

origin: lateral border of the scapula

teres minor insertion

insertion: greater tubercle of the humerus

subscapularis action

action: stabilizes GHJ, internal rotation, adduction, and extension of the GHJ

subscapularis origin

origin: anterior surface of subscapular fossa

subscapularis insertion

insertion: lesser tubercle of humerus