Thigh Muscles Flashcards

1
Q

action of vastus intermedius

A

extends leg at knee joint

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2
Q

action of vastus medialis

A

extends leg at knee joint

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3
Q

action of vastus lateralis

A

extends leg at knee joint

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4
Q

action of rectus femoris

A

extends leg at knee joint

flexes thigh at hip joint

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5
Q

What are the muscles of the anterior thigh
what action do they have in common
what is there innervation

A
rectus femoris
vastus medialis
vastus lateralis 
rectus femoris 
sartorius

all extend leg at knee (except sartorius)

femoral nerve
(L2-4)

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6
Q

action of sartorius

A

flexes thigh at hip joint

flexes leg at knee joint

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7
Q

What are the muscles of the medial thigh
what action do they have in common
what is their innervation

A
gracilis
adductor longus
adductor brevis
adductor Magnus 
pectineus
obturator externes 

adduct the thigh at the hip (except obturator externus)

obturator nerve (L2-4)
(except pectineus = femoral)
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8
Q

action of gracilis

A

adducts thigh at hip

flexes leg at knee

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9
Q

action of adductor brevis

A

adducts thigh at hip

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10
Q

action of adductor longus

A

adducts thigh at hip

medially rotates thigh at hip

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11
Q

action of adductor Magnus

A

adducts thigh at hip

medially rotates thigh at hip

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12
Q

action of pectineus

A

adducts thigh at hip

flexes thigh at hip

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13
Q

action of obturator externus

A

laterally rotates thigh at hip

found at back of medial compartment

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14
Q

What are the muscles of the gluteal region

A

glut max
glut med
glut min
tensor fascia latae

gemellus superior
gemellus interior
quadratus femoris
obturator internus

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15
Q

actions of gluteus Maximus

A

extends a flexed femur at the hip

abducts the thigh at the hip

laterally rotates the thigh at the hip

lateral stabiliser of hip AND knee joint

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16
Q

innervation of gluteus Maximus

A

inferior gluteal nerve

L5 - S2

17
Q

actions of gluteus medius and minimus

A

abducts thigh at hip joint

medially rotates thigh at hip

holds pelvis secure over stance leg and prevents pelvic drop on the opposite side during walking

18
Q

actions of tensor fascia latae

A

stabilises knee in extension

19
Q

innervation of gluteus medius, gluteus minimus and tensor fascia latae

A

superior gluteal nerve

L4-S1

20
Q

Common action of gemellus superior, inferior and obturator internus

A

Laterally rotates the extended thigh at the hip

abduction of flexed thigh at hip

21
Q

action of quadratus femoris

A

laterally rotates thigh at hip

22
Q

innervation of gemellus superior and obturator internus

A

nerve to obturator internus

L5-S1

23
Q

innervation of gemellus inferior and quadratus femoris

A

nerve to quadratus femoris

L5-S1

24
Q

Innervation of the posterior compartment of the thigh

A

Sciatic nerve

L5-S2

25
Q

actions of biceps femoris

A

extends thigh at hip joint

flexes knee joint

laterally rotates thigh at hip joint

laterally rotates leg at knee joint

26
Q

actions of semimembranosus and semitendinosus

A

extends thigh at hip joint

flexes leg at knee joint

medially rotates thigh at hip joint

medially rotates leg at knee joint