Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

MSK1 > Posterior thigh and popliteal fossa > Flashcards

Posterior thigh and popliteal fossa Flashcards

1
Q

Semitendinosus m. origin, insertion, action, innervation

A

O: ischial tuberosity
I: Pes anserinus
A: Extend thigh, flex leg, medially rotate leg when flexed
Innervation: Tibial division (L4-S3) of sciatic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What 3 muscles insert on to the pes anserinus and what innervates them?

A

Sartorius - femoral nerve
Gracilis - obturator nerve
Semitendinosus - tibial division of the sciatic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Semimembranosus m. origin, insertion, action, innervation

A

O: ischial tuberosity
I: posterior aspect of medial tibial condyle
A: Extend thigh and flex leg
Innervation: tibial division of the sciatic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What happens to the semimembranosus tendon?

A

One half connects muscle to posterior medial tibial condyle; one half leaves the medial tibial condyle to run supero-laterally across the backside of the knee to reinforce the intercondylar capsule of the knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What makes up the biceps femoris?

A

Long head and short head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Long head origin, insertion, action and innervation

A

O: ischial tuberosity
I: Lateral aspect of fibular head
A: Extend thigh, flex and laterally rotate leg
Innervation: tibial division of the sciatic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Short head origin, insertion, action and innervation

A

O: Linea aspera and lateral supracondylar line of posterior femur
I: Lateral aspect of fibular head
A: Flex and laterally rotate leg
Innervation: common fibular division of sciatic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Name the muscles in the posterior thigh

A

Biceps femoris (long and short head), semitendinosus, semimembranosus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How does the adductor magnus help the posterior thigh?

A

The hamstring portion origin: ischial tuberosity
I: Adductor tubercle on medial tibial epicondyle
Innervation: tibial division of the sciatic nerve
Extends the thigh as well

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the popliteal fossa?

A

Diamond shaped region of posterior knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the superomedial boundary of the popliteal fossa?

A

Semitendinosus and semimembranosus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the superolateral boundary of the popliteal fossa?

A

Biceps femoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the inferolateral boundary of the popliteal fossa?

A

Lateral head of gastrocnemius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the inferomedial boundary of the popliteal fossa?

A

Medial head of the gastrocnemius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the contents of the popliteal fossa?

A

Nerves, popliteal vein, lymph nodes and branches, popliteal artery and branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Going from superficial to deep within the popliteal fossa, what is the order of what you will find?

A

Nerves
Popliteal VEIN and branches and lymph nodes
Popliteal ARTERY and branches

17
Q

What is the popliteal artery?

A

Continuation of the femoral artery once it passes through the adductor hiatus

18
Q

What does the popliteal artery do?

A

Gives rise to genicular branches close to the knee joint capsule

19
Q

List the functions of the genicular branches

A

Genicular anastomosis and supplies articular capsule and ligaments in the knee

20
Q

What is the purpose of the genicular anastamosis

A

To supply blood to knee/lower limb if the femoral/popliteal artery is occluded or if the knee is flexed for too long

21
Q

Name the big players in genicular anastamosis

A 
Superior lateral genicular A. 
Inferior lateral genicular A.
Superior medial genicular A.
Inferior medial genicular A.
** Descending branch of lateral circumflex femoral A.
22
Q

What is the role of the descending branch of lateral circumflex femoral A. in genicular anastamosis?

A

It participates in the cruciate anastamosis so it can bring blood down the thigh to the knee if the femoral A. is occluded or severed

23
Q

How does the popliteal artery terminate?

A

It divides into the anterior tibial artery and posterior tibial artery

24
Q

What forms the popliteal vein?

A

Union between anterior and posterior tibial veins at inferior border of popliteus muscle

25
Q

What terminates into popliteal vein?

A

Small saphenous vein - becomes femoral vein after adductor hiatus

26
Q

Nerves in popliteal fossa?

A

Tibial division and common fibular division of sciatic nerve

27
Q

Where does the sciatic nerve branch?

A

Superior angle of popliteal fossa

28
Q

What does the tibial division nerve innervate?

A

Superficial and deep muscles in posterior leg, knee joint

29
Q

What does the common fibular nerve do?

A

Leaves popliteal fossa superior to lateral head of gastrocnemius
Winds around neck and head of fibula and is prone to injury
Terminates into deep fibular nerve and superficial fibular nerve

30
Q

What is the cutaneous nerve of distal posterior aspect of leg and lateral ankle/foot

A

Sural nerves

31
Q

List sural nerves

A

Medial sural cutaneous nerve, sural communicating branch, lateral sural cutaneous nerve, common fibular nerve

MSK1 (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions