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anatomy > posterior compartment of the thigh > Flashcards

posterior compartment of the thigh Flashcards

1
Q

name the hamstring muscles

A

semitendinosis , semi membranouis , biceps femoris, adductor magnus

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2
Q

nerve supply of hamstring muscles

A

all supplied by the tibial branch of sciatic nerve except for the short head of biceps femoris supplied by the common peroneal branch

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3
Q

biceps femoris long head origin

A

ischial tuberosity

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4
Q

biceps femoris short head origin

A

posterior shaft of femur

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5
Q

biceps femoris insertion

A

head of fibula

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6
Q

biceps femoris innervation

A

sciatic nerve

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7
Q

biceps femoris action

A

flexes the leg at the knee joint and the long head extends the thigh at the hip joint

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8
Q

semi membranosus origin

A

ischail tuberosity

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9
Q

semi membranosis insertion

A

medial condyle of tibia

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10
Q

semi membranosis innervation

A

tibial portion of sciatic nerve

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11
Q

semi membranosis action

A

flexes and medially rotates the leg at the knee joint and extends the thigh at the hip joint

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12
Q

adductor magnus origin

A

ischial tuberosity

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13
Q

adductor magnus insertion

A

adductor tubercle

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14
Q

adductor magnus innervation

A

tibial portion of sciatic nerve

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15
Q

adductor magnus action

A

extends the thigh at the hip joint

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16
Q

semi tendinosus origin

A

ischial tuberosity

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17
Q

semi tendinosus insertion

A

upper part of medial surface of shaft of tibia SGS

18
Q

SEmi tendinosis innervation

A

tibial portion of sciatic nerve

19
Q

semi tendinosis action

A

flexes and medially rotates the leg at the knee joint, extends teh thigh at the hip joint

20
Q

what muscle unlocks the knee joint before any flexion can take place?

A

popliteus muscle

21
Q

only when the knee joint is in what condition to be able to be roatted?

A

semiflexed

22
Q

biceps femoris can act as?

A

lateral rotatords of the leg

23
Q

what are the medial rotators of the leg?

A

semi tendinosis and mambranosis

24
Q

what are the medial rotators of the leg?

A

semi tendinosis and mambranosis

25
Q

sciatic nerve description

A

a terminal branch of the sacral plexus L4,5 S1,2,3
A terminal branch of the sacral plexus (L4 and 5; S1, 2, and 3)

Emerges from the pelvis through the greater sciatic foramen below the piriformis muscle
It is the largest nerve in the body and consists of
the
tibial and common peroneal nerves bound together with fascia.
Commonly terminates in the middle of the thigh by dividing into Ti b i a l N e r v e and C o m m o n p e r o n e a l Nerve

26
Q

safe area marking

A

the thumb and thenar eminence are placed along the illiac crest and the tip of the thumb is touching the anterior superior illiac spine

27
Q

popliteal surface description

A

it is an intermuscylar area situated behind the knee joint

28
Q

lateral boundary from above

A

the biceps femoris

29
Q

lateral boundary from below

A

the lateral head of gasterocnemius and the plantaris

30
Q

medial boundary from abive

A

semi tendinosis and semi membrinosis

31
Q

medial boundary from below

A

the medial head of gastercnemious

32
Q

floor of popliteal fossa

A

popliteal surface of femur , the posterior of the kneee joint , popliteus muscle

33
Q

roof of popliteal fossa

A

skin, superficial fascia, deep fascia of the thigh

34
Q

what is teh deepest, intermediate and most superficial structure of the popliteal fossa?

A

deepest: popliteal artey
intermediate: popliteal vein
superficial: tibial nerve

35
Q

contents of popliteal fossa

A

popliteal artery and vein
posterior cutaneous nerve of the thigh
small saphenous vein
tibial nerve
common peroneal nerve
lymph nodes

36
Q

what branch is largest in the sciatic nerve ?

A

tibial

37
Q

how does the tibial nerve enter the leg ?

A

it enters teh posterior compartment of the leg by passing beneath the soleus muscle

38
Q

the branches of the tibial nerve

A

cutaneous , articulara nd muscular

39
Q

cutaneous branch supplies?

A

THE SKIN ON THE BACK OF THE LEG /CALF

40
Q

cutaneous branch of tibial nerve journey

A

it passes between the two head sof gastrocnemius muscle

41
Q

articular branch supplies?

A

the knee joint

42
Q

muscular branch supplies the?

A

the two heads of gastrocneumius , popliteus, plantaris, soleus

anatomy (36 decks)

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