Lecture 7 Muscles of the Thigh ORIGINS

Question 1

What is the origin of sartorius?

Answer 1

Anterior superior iliac spine

Question 2

What are the origins of Rectus Femoris?

Answer 2

Short head: anterior inferior iliac spine
Reflected head: ilium above the acetabulum

Question 3

What is the origin of vastus lateralis?

Answer 3

intertrochanteric line, inferior part of greater trochanter, lateral lip of linea aspera, and the lateral deep fascial septum

Question 4

What is the origin of vastus medialis?

Answer 4

intertrochanteric line, medial lip of linea aspera and medial deep fascial septum

Question 5

What is the origin of vastus intermedius?

Answer 5

anterior and lateral surfaces of the shaft of the femur

Question 6

What is the origin of Articularis Genu?

Answer 6

Inferior 1/4 of the anterior surface of the femur

Question 7

What is the origin of pectineus?

Answer 7

Pectineal line of the superior ramus of the pubis

Question 8

What are the origins of biceps femoris?

Answer 8

Long head: Ischial tuberosity (with semitendinosis tendon
sacrotuberal ligament
Short head: Lateral lip of linea aspera and proximal 2/3 of lateral supracondylar ridge of femur.

Question 9

What is the origin of semitendinosis?

Answer 9

Ischial tuberosity (with biceps long head tendon)
Shared origin

Question 10

What is the origin of semimembranosus?

Answer 10

Ischial tuberosity (lateral to biceps femoris and semitendinosis common origin

Question 11

What is the origin of Gracilis?

Answer 11

Body and inferior ramus of the pubis and ramus of the ischium (only small portion on ischium)

Question 12

What is the origin of Adductor Magnus?

Answer 12

Interior ramus of the pubis, ramus of ischium and the ischial tuberosity.

Question 13

What is the origin of Adductor Longus?

Answer 13

Body of the pubis (just inferior to pubic crest and tubercle)

Question 14

What is the origin of Adductor Brevis?

Answer 14

Body of the pubis and inferior ramus of the pubis