Anatomy Dissection 3 Flashcards Preview

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Flashcards in Anatomy Dissection 3 Deck (15)
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1
Q

What does the sciatic nerve (L4 - S3) supply?

A

Muscles in the posterior compartment of thigh, muscles within all compartments of leg and intrinsic muscles of foot

2
Q

What does the sciatic nerve divide into?

A

Tibial and common fibular nerve

3
Q

Where does the sciatic nerve tend to divide?

A

Anywhere between gluteal region and popliteal fossa (most commonly inferior 1/3rd of thigh)

4
Q

Where do three of the four hamstring muscles attach to proximally?

A

Ischial tuberosity

5
Q

What are the three individual hamstring muscles?

A
  1. Semimembranosus
  2. Semitendinosus (medially)
  3. Biceps femoris (laterally)
6
Q

What function do the hamstring muscles have?

A

Extend and flex these knee and hip joints

7
Q

What bounds the popliteal fossa superomedially and superolaterally?

A

Tendons of hamstrings

8
Q

What does the biceps femoris attach to?

A

The lateral aspect of the head of fibula

9
Q

Give three reasons why the short head of the biceps cannot be considered a ‘true’ hamstring?

A
  1. It attaches proximally to the linea aspera of femur, not ischial tuberosity
  2. Does not cross the hip joint and so does not contribute to hip joint movement
  3. Is supplied by common fibular branch of sciatic nerve not the tibial
10
Q

Where do the semimembranosus and semitendinosus attach to?

A

The proximal tibia

11
Q

Why is the name given to the semitendinosus?

A

It has a longer tendon than the other muscles

12
Q

Why is the name given to the semimembranosus?

A

It has shiny membranous appearance

13
Q

What increases the depth of the acetabulum?

A

The acetabular labrum

14
Q

What attaches the femur to the depth of acetabulum and is ruptured during dislocation?

A

Ligament of the head of femur

15
Q

What artery supplies minimal blood to the head of femur and is obliterated in adulthood?

A

Artery to head of femur