B6-028 Gluteal Region and Thigh Flashcards
chief extensor of the thigh
gluteus maximus
what part of the gluteus maximus can help extend the leg at the knee?
iliotibial tract
inferior gluteal nerve innervates
gluteus maximus
[…] nerve arises in the gluteal region from the spinal chord and descends down into the posterior thigh
sciatic
gluteus medius and gluteus minimus are important for normal […]
gait
responsible for thigh abduction and medial rotation [2]
gluteus minimus
gluteus medius
superior gluteal nerve innervates [3]
gluteus medius and minimus
tensor fascia lata
-abducts, medially rotates, and flexes thigh at hip
-can aid gluteus maximus in slight extension of knee
tensor fascia lata
most superior lateral rotator of the hip
piriformis
superior gluteal nerve and artery emerge superior to […]
piriformis
the sciatic nerve emerges inferior to […]
piriformis
(so does inferior gluteal nerve)
what three muscles form the triceps coxae
superior gemellus
inferior gemellus
obturator internus
lateral rotators of the femur [6]
piriformis
superior gemellus
inferior gemellus
quadratus femoris
obturator internus
obturator externus
most inferior lateral rotator of the hip
quadratus femoris
vertically oriented group of gluteal muscles [5]
gluteus medius
gluteus minimus
tensor fascia latae
gluteus maximus
piriformis
horizontally oriented group of gluteal muscles [5]
quadratus femoris
obturator internus
obturator externus
gemelli pair
the bulk of the anterior muscles of the thigh act as […]
extensors
the leg extensors of the anterior thigh mostly insert onto the
tibial tuberosity
muscles of the anterior thigh [4]
iliopsoas
pectineous
sartorius
quadriceps femoris
chief flexor of the thigh
illiopsoas
comes off T12-L5 and inserts onto the lesser trochanter of the femur
illiopsoas
what two muscles make up illiopsoas?
illiacus
psoas major
illiacus is innervated by
femoral nerve
L1-L3 ventral rami innervates
psoas
longest muscle in body
sartorius
sartorius is innervated by
femoral nerve
quadriceps femoris is innervated by
femoral nerve
only muscle of the quad that acts on the hip and knee to extend the leg and flex the thigh
rectus femoris
the vasti of the quadriceps femoris works to […] the leg
extend
superficial medial thigh muscle [4]
pectineus
adductor longus
adductor brevis
gracillis
deep medial thigh muscles [2]
obturator externus
adductor magnus
pectineus is innervated by
femoral nerve
adductor longus is innervated by
obturator nerve
primary function of the medial thigh muscles is
adduction
**some do a bit of flexion
only adductor to cross the knee joint
gracilis
gracilis is innervated by
obturator nerve
lies deep to pectineus and adductor longus
adductor brevis
adductor brevis is innervated by
obturator
largest adductor muscle
adductor magnus
2 parts of adductor magnus
adductor portion
hamstring portion
the hamstring part of the adductor magnus arises from
ischial tuberosity
the adductor part of the adductor magnus arises from
ischiopubic ramus
the hamstring part of the adductor magnus inserts at the
adductor tubercle
the adductor part of the adductor magnus inserts distally at
linea aspera
in general, the medial compartment of the thigh contains […] and is innervated by […]
adductors
obturator nerve
in general, the anterior compartment of the thigh contains […] and is innervated by […]
extensors
femoral nerve
in general, the posterior compartment of the thigh contains […] and is innervated by […]
flexors
sciatic nerve
most of the hamstrings are innervated by
tibial division of sciatic
**except short head of biceps femoris (fibular division)
in the general, the hamstrings act to […] and the hip and […] at the knee
extend at hip
flex at knee
**short head of biceps only flexes at knee
-long cordlike tendon that runs down the posterior thigh
-extends thigh at hip, medially rotates leg
semitendinosus
semitendinosus is innervated by
tibial division of sciatic
what muscles/nerves make up the pes anserinus
gracilis -obturator
semitendinosus- tibial division of sciatic
sartorius- femoral nerve
the pes anserinus is located on the medial aspect of the
tibia
semimembranosus sends off the […], which reinforces the capsule of the knee
oblique popliteal ligament
hyperextension of the knee could damage […]
oblique popliteal ligament
the long head of biceps femoris is innervated by
tibial division of sciatic nerve
the short head of biceps femoris is innervated by
fibular division of sciatic nerve
which head of the biceps femoris flexes the knee and extends the thigh?
long head
**short only flexes
both heads of biceps femoris insert distally at […]
head of fibula
short head of the biceps femoris originates at […]
linea aspera of femur
long head of biceps femoris originates at […]
ischial tuberosity
the adductor part of adductor magnus inserts distally at […]
adductor tubercle on medial epicondyle of femur
adductor magnus originates from […]
ischial tuberosity
hamstring portion of adductor magnus is innervated by
tibial division of sciatic
hamstring that acts only at the hip to assist in extension
hamstring portion of adductor magnus
**does not cross knee= no flexion
adductor portion of adductor magnus is innervated by
obturator
posterior thigh muscles [5]
semimembranosus
semitendonosus
biceps femoris
popliteus
**not pictured: hamstring portion of adductor magnus
abductors of the hip [2]
gluteus medius
gluteus minimus
adductors of the hip [3]
adductor magnus
adductor longus
adductor brevis
extensors of hip [4]
gluteus maximus
semitendonosus
semimembranosus
long head of biceps femoris
flexors of hip [5]
illiopsoas
rectus femoris
tensor fascia latae
pectineous
sartorius
internal rotators of hip [3]
gluteus medius
gluteus minimus
tensor fascia latae