Thigh Muscles

Question 1

Anterior Thigh muscles

Answer 1

Quads, Sartorius, articularis genu

Question 2

Rectus femoris O and I

Answer 2

O: AIIS (straight tendon) and groove above acetabulum
I: base of patella

Question 3

Rectus femoris function

Answer 3

knee extension and hip flexion

Question 4

Anterior compartment N and Artery

Answer 4

Femoral N, femoral A

Question 5

Vastus lateralis O and I

Answer 5

O: lateral lip of linea aspera, lateral lip of gluteal tuberosity, anterior and inferior boarders of greater trochanter, proximal intertrochanteric line
I: lateral border of patella

Question 6

Vastus medialis O and I

Answer 6

O: medial lip of linea aspera, tendon of adductor longus/magnus, medial IM septum, proximal suprachondylar line, distal intertrochanteric line
I: medial border of patella

Question 7

Vastus Intermedius O and I

Answer 7

O: proximal 2/3 of anterior and lateral surface of femur
I: base of patella

Question 8

Sartorius O and I and function

Answer 8

O: ASIS
I: medial tibia (part of pos anserinus)
F: hackisack motion

Question 9

Articularis genu O, I and function

Answer 9

O: anterior surface of distal femur
I: synovial membrane and supra patellar bursa
F: draws synovium proximally during knee flexion

Question 10

Medial Compartment Muscles

Answer 10

gracilis, obturator externus, pectineus, adductor brevis, adductor longus, adductor magnus

Question 11

Medial compartment A and N

Answer 11

A: medial circumflex, profunda femoris, obturator arteries
N: Obturator N

Question 12

Gracilis O and I

Answer 12

O: inferior 1/2 of pubic symphysis, pubic body, superior 1/2 of inferior pubic rams
I: medial tibia (pes anserinus)

Question 13

Gracilis Function

Answer 13

thigh adduction and medial rotation, knee flexion

Question 14

Obturator externus O and I

Answer 14

O: external aspect of ischial and pubic rami, along margins of obturator foramen
I: trochanteric fossa

Question 15

Pectineus O and I

Answer 15

O: pectin pubis and bone anterior to pectin pubis between pubic tubercle and iliopectineal line
I: Pectineal line of femur

Question 16

Pectineus function

Answer 16

thigh adduction, flexion and medial rotation

Question 17

Adductor brevis O and I

Answer 17

O: pubic body, inferior pubic ramus
I: Proximal linea aspera

Question 18

Adductor longus O and I

Answer 18

O: anterior surface of pubic body
I: Medial lip of linea aspera, between vastus medals and adductor magnus

Question 19

Adductor Magnus adductor portion O and I

Answer 19

O: inferior pubic ramus, ischial tuberosity
I: gluteal tuberosity, linea aspera

Question 20

Adductor Magnus hamstring portion O and I

Answer 20

O: ischial tuberosity (triangular region)
I: medial supracondylar line and adductor tubercle

Question 21

Adductor Magnus hamstring portion F and N

Answer 21

F: thigh extension
A: sciatic N (tibial portion)

Question 22

Posterior compartment muscles

Answer 22

Biceps femoris, semimembranosus, semitendonosus

Question 23

Biceps femoris short head O and I

Answer 23

O: lateral lip of linea aspera, lateral supracondylar line, lateral IM septum
I: lateral styloid process of fibula and lateral condyle of fibula

Question 24

Biceps femoris short head N and F

Answer 24

F: knee flexion and lateral rotation when flexed
N: Sciatic N (common fibular portion)

Question 25

Biceps femoris long head O and I

Answer 25

O: ischial tuberosity and sacrotuberous ligament I: lateral styloid process of fibula and lateral condyle of tibia

Question 26

Biceps femoris long head N and F

Answer 26

N: sciatic N (tibial portion) F: thigh extension and lateral rotation, knee flexion and lateral rotation when flexed

Question 27

Semimembranosus O and I

Answer 27

O: ischial tuberosity (upper, lateral portion of oblique line above semitendonosus and long head of biceps) I: Medial condyle of tibia and lateral condyle of femur as oblique popliteal ligament

Question 28

Semimembranosus F and N

Answer 28

F: hip extension, knee flexion, medial rotation of tibia when knee flexed N: sciatic N (tibial portion)

Question 29

Semitendonosus O and I

Answer 29

O: Ischial tuberosity (below the oblique line via common tendon with biceps long head) I: medial tibia (pes anserinus)

Question 30

Semitendonosus F and N

Answer 30

F: hip extension, knee flexion, medial rotation of tibia when knee flexed N: sciatic N (tibial portion)

Question 31

Superolateral border of popliteal fossa

Answer 31

biceps femoris M

Question 32

Superomedial border of popliteal fossa

Answer 32

semimembranosus

Question 33

Inferolateral border of popliteal fossa

Answer 33

gastroc lateral head

Question 34

inferomedial border of popliteal fossa

Answer 34

gastroc medial head

Question 35

Contents of popliteal fossa

Answer 35

popliteal A and V-genicular branches Sciatic N divisions: tibial and superficial peroneal N Plantaris and popliteus M