Chapter 9- Muscles in Lower Appendicular

psoas major

lumbar → femur; flexes hip

iliacus

ilium → femur; flexes hip

gluteus maximus

ilium → femur; extends hip

gluteus medius

ilium → femur; abducts + rotates thigh

gluteus minimus

ilium → femur; abducts + rotates thigh medially

piriformis

sacrum → femur; abducts + rotates thigh laterally

tensor fasciae latae

iliac crest → thigh; abducts thigh, flexes hip, rotates thigh medially

pectineus

pubis → femur; flexes hip + adducts thigh

adductor brevis

pubic → femur; adducts thigh + flexes hip

adductor longus

pubic bone → femur; adducts thigh + flexes hip

adductor magnus

ischial → femur; adducts thigh + flexes hip

gracilis

pubic → tibia; adducts thigh + flexes knee

biceps femoris

femur → fibula; flexes knee, rotates leg laterally, etends hip

semitendinosus

ischial → tibia; flexes knee, rotates leg medially, extends hip

semimembranosus

ischial → tibia; flexes knee, rotates leg medially, extends hip

sartorious

iliac spine → tibia; flexes knee and hip, abducts and rotates thigh laterally, rotates leg medially

rectus femoris

iliac spine → tibia; extends knee, flexes hip

vastus lateralis

femur → tibia; extends knee

vastus medialis

femur → tibia; extends knee

vastus intermedius

femur → tibia, extends knee

tibialis anterior

tibia → tarsal + 1st metatarsal; dorsiflexion + inversion of foot

fibularis tertius

fibula → 5th metatarsal; dorsiflexion + eversion of foot

extensor digitorum

tibia + fibula → 4 lateral toes; dorsiflexion + extends toes

extensor hallucis longus

fibula → big toe; extends big toe, dorsiflexion and inversion of foot

gastocnemius

femur → calcaneous; plantar flexion, flexes knee

soleus

fibula + tibia → calcaneous; plantar flexion of foot

plantaris

femur → calcaneous; plantar flexion of foot, flexes knee

flexor digitorum longus

tibia → 4 lateral toes; plantar flexion + inversion of foot, flexes toes

tibilias posterior

tibia + fibula → tarsal and metatarsal; plantar flexion + inversion of foot

fibularis longus

tibia + fibula → tarsal + metatarsal; plantar flexion + eversion, supports arch

levantor ani

pubis + ischial spine → coccyx; supports pelvic viscera + compresses anal canal

coccygeous

ischial spine → sacrum + coccyx; supports pelvic viscera + provides sphincterlike action in anal canal and vagina

deep transversus perenei

ischium + pubis → central tendon; supports pelvic viscera

external urethral sphincter

pubis + ischium → urethra; closes urethra

superficial transversus perinei

ischial tuberosity → central tendon; stabilizes central tendon

bubospongiosus

central tendon → penis/clitoris; empties urethra + erection, constricts vagina + erection

ischiocavernosus

ischial tuberosity → penis/clitoris; erection

external anal sphincter

coccyx + central tendon → anal canal; closes anal canal