1.2.6.3. Muscles of the Posterior Compartment of the Thigh Flashcards

1
Q

What are the Muscles of the Posterior Compartment of the Thigh collectively known as?

A

The Hamstrings

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2
Q

How many Muscles are in the Posterior Compartment of the Thigh?

A

3

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3
Q

What are the Muscles of the Posterior Compartment of the Thigh?

A
  1. Biceps Femoris Muscle
  2. Semitendinosus Muscle
  3. Semimembranosus Muscle
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4
Q

What do the Muscles of the Posterior Compartment of the Thigh form, at the Knee Joint?

A
  1. Medial Tendon at the back of the Knee Joint

2. Lateral Tendon at the back of the Knee Joint

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5
Q

What is the general function of the Muscles of the Posterior Compartment of the Thigh?

A
  1. Extension of the Hip Joint

2. Flexion of the Hip Joint

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6
Q

What are the Muscles of the Posterior Compartment of the Thigh innervated by?

A

The Sciatic Nerve (L3-S4)

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7
Q

Is the Hamstring part of the Adductor Magnus Muscle located in the Posterior Compartment of the Thigh?

A

No, although it has a similar action to these Muscles, it is located in the Medial Compartment of the Thigh

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8
Q

How does the Biceps Femoris Muscle of the Thigh, compare to the Biceps Brachii Muscle of the Arm?

A

They both have 2 Heads

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9
Q

What are the 2 Heads of the Biceps Femoris Muscle?

A
  1. Long Head of the Biceps Femoris Muscle

2. Short Head of the Biceps Femoris Muscle

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10
Q

Where is the Biceps Femoris Muscle located, in relation to the other Muscles of the Posterior Compartment of the Thigh?

A

It is the Lateral-most

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11
Q

Where does the Long Head of the Biceps Femoris Muscle originate from?

A

Ischial Tuberosity of the Pelvis

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12
Q

Where does the Short Head of the Biceps Femoris Muscle originate from?

A

Linea Aspera of the Femur

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13
Q

Where does the common Tendon of the Biceps Femoris Muscle attach distally?

A

Head of the Fibula

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14
Q

Where can the common Tendon of the Biceps Femoris Muscle be felt?

A

Laterally in the Posterior Knee Joint

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15
Q

What is the function of the Biceps Femoris Muscle?

A
  1. Flexion at the Knee Joint
  2. Extension of the Hip Joint
  3. Lateral Rotation of the Hip Joint
  4. Lateral Rotation of the Knee Joint
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16
Q

What is the innervation of the Long Head of the Biceps Femoris Muscle?

A

Tibial Part of the Sciatic Nerve (L4-S3)

17
Q

What is the innervation of the Short Head of the Biceps Femoris Muscle?

A

Common Fibular Part of the Sciatic Nerve (L4-S3)

18
Q

How is the Semitendinosus Muscle described?

A

A largely Tendinous Muscle

19
Q

Where is the Semitendinosus Muscle located, in relation to the Biceps Femoris Muscle?

A

It lies Medially to the Biceps Femoris Muscle

20
Q

What is covered by the Semitendinosus Muscle?

A

The Semimembranosus Muscle

21
Q

Where does the Semitendinosus Muscle originate from?

A

Ischial Tuberosity of the Pelvis

22
Q

Where does the Semitendinosus Muscle attach distally?

A

Medial Surface of the Tibia

23
Q

What is the function of the Semitendinosus Muscle?

A
  1. Flexion of the Knee Joint
  2. Extension of the Hip Joint
  3. Medial Rotation of the Hip Joint
  4. Medial Rotation of the Knee Joint
24
Q

What is the innervation of the Semitendinosus Muscle?

A

Tibial Part of the Sciatic Nerve (L4-S3)

25
Q

How is the Semimembranosus Muscle described?

A

A Flat and Broad Muscle

26
Q

Where is the Semimembranosus Muscle located, in relation to the Semitendinosus Muscle?

A

It is Deep to the Semitendinosus Muscle (underneath it)

27
Q

Where does the Semimembranosus Muscle originate from?

A

Ischial Tuberosity of the Pelvis

28
Q

Where does the Semimembranosus Muscle originate from, in relation to the other Muscles of the Posterior Compartment of the Thigh?

A

Superior to where the Semitendinosus Muscle and Biceps Femoris Muscle originate from

29
Q

Where does the Semimembranosus Muscle attach distally?

A

Medial Tibial Condyle

30
Q

What is the function of the Semimembranosus Muscle?

A
  1. Flexion of the Knee Joint
  2. Extension of the Hip Joint
  3. Medial Rotation of the Hip Joint
  4. Medial Rotation of the Knee Joint
31
Q

What is the innervation of the Semimembranosus Muscle?

A

Tibial Part of the Sciatic Nerve