POSTERIOR MUSCLES OF THE THIGH

Question 1

how is the thigh broken down in terms of compartments?

Answer 1

posterior compartment
-superficial
-deep
anterior compartment
-superficial
-intermediate
-deep
medial compartment 
-anterior
-intermediate
-posterior

Question 2

what muscles are found in the posterior compartment of the thigh?

Answer 2

-superficial layer
biceps femoris, long head
semitendinosus
-deep layer 
biceps femoris, short head
semimembranosus

Question 3

this muscle of the hamstring forms part of the pes anserinus?

Answer 3

semitendinosus

Question 4

what muscles of the posterior compartment make up the hamstrings?

Answer 4

biceps femoris long head
semimembranosus
semitendinosus

Question 5

BICEPS FEMORIS M., LONG HEAD ORIGIN

Answer 5

posteroinferomedial ischial
tuberosity (squared posterior part); shared with
semitendinosus muscle

Question 6

BICEPS FEMORIS M., LONG HEAD INSERTION

Answer 6

lateral aspect of the fibular head and the anterior edge of the lateral tibial condyle; shared with short
head of biceps femoris muscle
- muscle passes inferiorly, then
angles laterally at the knee region 85
- can palpate the tendon at the posterolateral knee region with
resisted contraction

Question 7

BICEPS FEMORIS M., LONG HEAD ACTION

Answer 7

extends the thigh; flexes and laterally rotates the leg

Question 8

BICEPS FEMORIS M., LONG HEAD ARTERY

Answer 8

perforating arteries of the profunda femoris, inferior gluteal,
and popliteal arteries

Question 9

BICEPS FEMORIS M., LONG HEAD INNERVATION

Answer 9

tibial part of sciatic nerve

Question 10

SEMITENDINOSUS M ORIGIN

Answer 10

posteroinferomedial area of the ischial tuberosity; shared with
the long head of biceps femoris muscle

Question 11

SEMITENDINOSUS M INSERTION

Answer 11

proximal medial shaft of the tibia 
- forms part of the pes anserinus (a
tendinous structure)
- passes inferiorly, then angles medially at the knee region
- can palpate the tendon at the
posteromedial knee region with
resisted contraction
- the more prominent tendon in
this area, due to a more posterior
position

Question 12

SEMITENDINOSUS M ACTION

Answer 12

extends the thigh; flexes and medially rotates the leg

Question 13

SEMITENDINOSUS M ARTERY

Answer 13

profunda femoral perforating arteries, inferior gluteal and

popliteal arteries

Question 14

SEMITENDINOSUS M INNERVATION

Answer 14

tibial part of sciatic nerve

Question 15

BICEPS FEMORIS M., SHORT HEAD ORIGIN

Answer 15

lateral lip of the linea aspera (inferior 2/3) and the lateral supracondylar line (also the posterior femoral intermuscular
septum)

Question 16

BICEPS FEMORIS M., SHORT HEAD INSERTION

Answer 16

lateral aspect of the head of the fibula and the lateral condyle of
the tibia; shared with the long head of biceps femoris muscle
- passes inferolaterally and blends with the long head of the biceps
femoris m

Question 17

BICEPS FEMORIS M., SHORT HEAD ACTION

Answer 17

flexes and laterally rotates the leg

Question 18

BICEPS FEMORIS M., SHORT HEAD ARTERY

Answer 18

profunda femoral perforating arteries and popliteal artery

Question 19

BICEPS FEMORIS M., SHORT HEAD INNERVATION

Answer 19

common fibular part of sciatic nerve

Question 20

SEMIMEBRANOSUS M. ORIGIN

Answer 20

posterosuperolateral part of the ischial tuberosity (squared

posterior part)

Question 21

SEMIMEBRANOSUS M. INSERTION

Answer 21

groove for semimembranosus
muscle (on the posterior aspect of
the medial tibial condyle) and the
posterior knee joint as the oblique popliteal ligament and the fascia
over the popliteus muscle (at the
proximoposterior tibia)
- passes inferomedially and makes
a sharp lateral turn at the
posteromedial aspect of the knee
region

Question 22

SEMIMEBRANOSUS M. ACTION

Answer 22

extends the thigh; flexes and medially rotates the leg

Question 23

SEMIMEBRANOSUS M. ARTERY

Answer 23

profunda femoral perforating
arteries, inferior gluteal and
popliteal arteries

Question 24

SEMIMEBRANOSUS M. INERVATION

Answer 24

tibial part of sciatic nerve

Question 25

HAMSTRING M ORIGIN

Answer 25

the ischial tuberosity

Question 26

HAMSTRING M ACTION

Answer 26

extend the thigh and flex the leg

Question 27

HAMSTRING INNERVATION

Answer 27

sciatic nerve