MEDIAL MUSCLES OF THE THIGH

Question 1

what layers comprise the medial compartment of the thigh?

Answer 1

anterior 
-pectineus m
-adductor longus m
intermediate
-adductor brevis m
posterior 
-adductor magnus m
-gracilis m

Question 2

PECTINEUS M. ORIGIN

Answer 2

pecten pubis (pectineal line) (from the pubic tubercle to the
iliopectineal eminence)

Question 3

PECTINEUS M. INSERTION

Answer 3

pectineal line of the femur - courses posteroinferolaterally (and
crosses the obturator externus muscle)

Question 4

PECTINEUS M. ACTION

Answer 4

adduct and flex the thigh

Question 5

PECTINEUS M. ARTERY

Answer 5

obturator artery and medial femoral circumflex artery

Question 6

PECTINEUS M. INNERVATION

Answer 6

femoral nerve

Question 7

ADDUCTOR LONGUS M. ORIGIN

Answer 7

anterior pubic body (inferior to the pubic crest and lateral to
the pubic symphysis)

Question 8

ADDUCTOR LONGUS M. INSERTION

Answer 8

medial lip of the linea aspera (middle 1/3) - courses posteroinferolaterally

Question 9

ADDUCTOR LONGUS M.

ACTION

Answer 9

adduct and flex the thigh; aids in lateral rotation of the thigh

Question 10

ADDUCTOR LONGUS M.

ARTERY

Answer 10

obturator artery and medial femoral circumflex artery

Question 11

ADDUCTOR LONGUS M. INNERVATION

Answer 11

obturator nerve (anterior branch)

Question 12

ADDUCTOR BREVIS M ORIGIN

Answer 12

anterior surface of the inferior pubic ramus

Question 13

ADDUCTOR BREVIS M INSERTION

Answer 13

pectineal line of the femur and (superior ½ of the) medial lip of the linea aspera; shared with
pectineus and adductor longus muscles
- courses posteroinferolaterally

Question 14

ADDUCTOR BREVIS M ACTION

Answer 14

adduct and flex the thigh; aids in

lateral rotation of the thigh

Question 15

ADDUCTOR BREVIS M ARTERY

Answer 15

obturator artery and medial femoral circumflex artery

Question 16

ADDUCTOR BREVIS M INNERVATION

Answer 16

obturator nerve (anterior or posterior
branch)

Question 17

ADDUCTOR MAGNUS M. ORIGIN

Answer 17

anterior to posterior orientation of fibers at origin
a. inferior aspect of the inferior
pubic ramus
b. ischial ramus
c. inferolateral part of the ischial tuberosity

Question 18

ADDUCTOR MAGNUS M. INSERTION

Answer 18

superior to inferior orientation of
fibers at insertion
a. gluteal tuberosity (medial edge)
b. medial lip of the linea aspera
and the medial supracondylar line
c. medial supracondylar line and
adductor tubercle
- passes from a near sagittal plane
origin to a near frontal plane insertion pass almost directly inferior.
- the superior fibers of the adductor magnus muscle are sometimes referred to as the
adductor minimus muscle
- the inferior / vertical fibers of the adductor magnus muscle are
often termed the hamstring part of
the adductor magnus muscle
- can palpate the tendon of the hamstring part of the adductor magnus muscle.

Question 19

ADDUCTOR MAGNUS M. ACTION

Answer 19

adduct the thigh; aid in flexion and extension of the thigh (due to the
rotation from origin to insertion)

Question 20

ADDUCTOR MAGNUS M. ARTERY

Answer 20

medial femoral circumflex artery,
perforating arteries of the profunda femoris artery (n=4), obturator artery, and popliteal
artery

Question 21

ADDUCTOR MAGNUS M. INNERVATION

Answer 21

obturator nerve (posterior branch); all
except the hamstring part; tibial part of
sciatic nerve; hamstring part

Question 22

GRACILIS M ORIGIN

Answer 22

anterior aspect of the pubic body (inferior part), inferior
pubic ramus (medial part) and pubic symphysis (inferior
aspect)

Question 23

GRACILIS M INSERTION

Answer 23

proximal medial shaft of the tibia
-forms part of the pes anserinus
-courses inferiorly and passes posterior to the medial femoral
condyle

Question 24

GRACILIS M ACTION

Answer 24

adduct the thigh; flex the leg; aids in medial rotation of the leg (at the knee)

Question 25

GRACILIS M ARTERY

Answer 25

medial femoral circumflex, obturator, and profunda femoris

arteries

Question 26

GRACILIS M INNERVATION

Answer 26

obturator nerve (anterior branch