a&p 1 lab 7: muscles of upper leg + hip

gluteus maximus origin

dorsal ilium
sacrum

coccyx

gluteus maximus insertion

gluteal tuberosity of femur
iliotibial band

gluteus maximus action

extends + laterally rotates thigh

gluteus medius origin

lateral surface of ilium

gluteus medius insertion

gluteal tuberosity of femur

gluteus medius action

abducts and medially rotates thigh

gluteus minimus origin

external surface of ilieum

gluteus minimus insertion

greater trochanter of femur

gluteus minimus action

abducts and medially rotates thigh

what muscles make up the gluteal group?

gluteus maximus, gluteus medius, gluteus minimus

iliacus origin

crest and fossa of ileum
ala of sacrum

iliacus insertion

lesser trochanter of femur

iliacus action

flexes thigh toward trunk

psoas major origin

bodies and intervertebral discs of T12-L5

psoas major insertion

lesser trochanter of femur

psoas major action

flexes thigh toward trunk
flexes vertebral column laterally

what 2 muscles make up the iliopsoas?

iliacus + psoas major

rectus femoris origin

AIIS + ilium (just above acetabulum)

rectus femoris insertion

patella and tibial tuberosity

rectus femoris action

extends knee; flexes thigh at hip

vastus lateralis origin

greater trochanter
linea aspera

vastus lateralis insertion

patella and tibial tuberosity

vastus lateralis action

extends knee; flexes thigh at hip

vastus medius origin

intertrochanteric line
linea aspera

vastus medius insertion

patella and tibial tuberosity

vastus medius action

extends thigh; flexes thigh at hip

vastus intermedius

anterior + lateral surfaces of femoral shaft

vastus intermedius insertion

patella and tibial tuberosity

vastus intermedius action

extends knee; flexes thigh at hip

what 4 muscles make up the quadriceps?

rectus femoris
vastus lateralis
vastus medius
vastus intermedius

biceps femoris origin

ischial tuberosity
linea aspera

lateral supracondylar line of femur

biceps femoris insertion

head of fibula

lateral condyle of tibia

biceps femoris action

extends thigh and flexes knee

semitendinosus origin

ischial tuberosity

semitendinosus insertion

medial aspect of upper tibia

semitendinosus action

extends thigh and flexes knee

semimembranosus origin

ischial tuberosity

semimembranosus insertion

posterior surface of medial condyle of tibia

semimembranosus action

extends thigh and flexes knee

what 3 muscles make up the hamstrings?

biceps femoris
semitendinosus
semimembranosus

adductor brevis origin

pubis

adductor brevis insertion

lesser trochanter of femur

adductor brevis action

adducts hip

adductor longus origin

pubis

adductor longus insertion

linea aspera

adductor longus action

adducts hip

adductor magnus origin

pubis, ischium

adductor magnus insertion

linea aspera of femur

adductor magnus action

adducts hip