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PHTH 510 > Thigh Muscles > Flashcards

Thigh Muscles Flashcards

1
Q

What are the muscles of the anterior compartment of the thigh?

A

1.psoas major
2.illiacus
3.iliopsoas (combo)
4. sartorius
5. vastus medialis
6.vastus intermedius
7. vastus lateralis
8. rectus femoris

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2
Q

what is the origin of the psoas major?

A

The sides of T12 to L5 and the intervertebral discs

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3
Q

what is the insertion of the psoas major?

A

lesser trochanter

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4
Q

what is the action of the psoas major?

A

flex the thigh and the trunk

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5
Q

what is the innervation of the psoas major?

A

Spinal nerves L1-L3

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6
Q

what is the origin of the illiacus?

A

iliac fossa

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7
Q

what is the insertion of the illiacus?

A

lesser trochanter

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8
Q

what is the action of the illiacus?

A

flexes the thigh and the trunk

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9
Q

what is the action of the iliopsoas?

A

-To maintain upright posture.
-Start the swinging phase.
-Pull the trunk froward from standing to sitting
-From sitting to lying, pulls on the pelvis and lower vertebrae to pull the trunk up

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10
Q

what major nerve innervates the anterior compartment of the thigh?

A

Femoral Nerve (L2&L3)

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11
Q

what is the origin of the sartorius?

A

ASIS

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12
Q

what is the insertion of the sartorius?

A

The pes anserinus (medial surface of superior shaft of tibia)

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13
Q

what is the action of the sartorius?

A

flex the hip and flex the leg

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14
Q

what is the origin of rectus femoris?

A

AIIS and the grove superior to the acetabulum

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15
Q

what is the insertion of rectus femoris?

A

Base of patella to form the more central portion of the quad femoris tendon

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16
Q

what is the action of rectus femoris?

A

Extend the leg and flex the hip

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17
Q

what is the orgin of vastus lateralis?

A

greater trochanter

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18
Q

what is the insertion of vastus lateralis?

A

Base of patella to form the more lateral portion of the quad femoris tendon

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19
Q

vastus lateralis, vastus intermedius, and vastus medialis will…. (action)

A

extend the leg

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20
Q

what is the origin of vastus intermedius

A

the intertrochanteric line of the femur and the upper anterior surface of the femur

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21
Q

what is the insertion of vastus intermedius

A

Base of patella to form the quad femoris tendon

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22
Q

what muscles in the anterior compartment of the thigh will extend the leg?

A

rectus femoris, vastus lateralis, vastus intermedius, vastus medialis.

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23
Q

what is the origin of vastus medialis?

A

intertrochanteric line and linea aspera

24
Q

what is the insertion of vastus medialis?

A

Base of patella to form the more medial portion of the quad femoris tendon

25
what two muscles in the anterior compartment of the thigh have the lesser trochanter as their insertion?
Psoas major and illiacus
26
What are the muscles of the medial compartment of the thigh?
1.gracilis 2. pectineus 3. adductor magnus 4.adductor brevis 5. adductor longus
27
what is the major innervation of the medial compartment of the thigh?
the obturator nerve HOWEVER the pectineus will be innervated by the femoral nerve.
28
What is the origin of the adductor longus?
body of the pubis close to the symphysis
29
what is the insertion of adductor longus?
linear aspera of the femur
30
what is the major muscle action of the medial compartment of the thigh?
adduction of the thigh
31
what is the action of the adductor longus?
adduct the thigh and medially rotate the thigh
32
what is the origin of the adductor brevis?
inferior pubic ramus close to the symphysis
33
what is the insertion of adductor brevis?
upper part of the linea aspera
34
what is the action of the adductor brevis
adduct the thigh
35
what is the origin of adductor magnus?
inferior ramus of pubis, inferior ramus of ischium, and ischial tuberosity
36
what is the insertion of adductor magnus?
linea aspera and supracondylar line
37
what is the action of adductor magnus?
adduct thigh
38
what is the origin of gracilis?
inferior ramus of pubis
39
what is the insertion of gracilis?
pes anserinus
40
what is the action of gracilis?
adduct and flex the thigh
41
what is the origin of pectineus
superior ramus of pubis
42
what is the insertion of pectineus
pectineal line of femur
43
what is the action of pectineus
adduct and flex the thigh
44
what is the main innervation of the posterior compartment of the thigh?
the tibial nerve with the exception of common fibular for biceps femoris short head
45
what is the main action of the posterior compartment of the thigh?
knee flexion and thigh extension
46
what is the origin of biceps femoris long head
ischial tuberosity
47
what is the insertion of biceps femoris long head?
lateral tibia
48
what is the action of the biceps femoris long head?
thigh extension
49
what is the origin of bicep femoris short head?
linea aspera
50
what is the insertion of bicep femoris short head?
head of fibula
51
what is the action of bicep femoris short head?
knee flexion
52
what is the origin of semitendinosus
ischial tuberosity
53
what is the insertion of semitendinosus
pes ansernius
54
what is the shared action between semitendinosus and semimembranosus?
thigh extension and knee flexion
55
what is the origin of semimembranosus
ischial tuberosity
56
what is the insertion of semimembranosus
medial condyle of tibia

PHTH 510 (7 decks)

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