1.2.6.1. Muscles of the Anterior Compartment of the Thigh Flashcards Preview

Nessy Anatomy MSK Lower Limb > 1.2.6.1. Muscles of the Anterior Compartment of the Thigh > Flashcards

Flashcards in 1.2.6.1. Muscles of the Anterior Compartment of the Thigh Deck (50)
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1

What are the 3 Muscle Compartments of the Thigh?

1. Anterior Compartment of the Thigh
2. Medial Compartment of the Thigh
3. Posterior Compartment of the Thigh

2

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

The Femoral Nerve

3

What is the Segmental (or Root) Values for the Femoral Nerve?

1. L2
2. L3
3. L4

4

In general, what is the function of the Muscles of the Anterior Compartment of the Thigh?

Extension of the Leg at the Knee Joint

5

What are the 3 major Muscles in the Anterior Compartment of the Thigh?

1. Pectineus Muscle
2. Sartorius Muscle
3. Quadriceps Femoris Muscles
Note - The End of the Iliopsoas Muscle also passes into the Anterior Compartment of the Thigh

6

What does the Pectineus Muscle form?

The base of the Femoral Triangle

7

How is the Pectineus Muscle described?

A flat Muscle

8

Where does the Pectineus Muscle originate from?

Pectineal Line, on the Anterior Surface of the Pelvis

9

Where does the Pectineus Muscle attach distally?

Pectineal Line, on the Posterior Surface of the Femur
Note - it attaches just Inferiorly to the Lesser Trochanter of the Femur

10

What is the function of the Pectineus Muscle?

1. Adduction of the Thigh at the Hip Joint
2. Flexion of the Hip Joint

11

What is the innervation of the Pectineus Muscle?

It has a dual innervation:
1. Femoral Nerve (L2-L4)
2. It may also receive a branch from the Obturator Nerve

12

What is the significance of the dual innervation of the Pectineus Muscle?

It can be considered a transitional muscle between the Anterior and Medial Compartments of the Thigh

13

What is significant about the Sartorius Muscle?

It is the longest Muscle in the Body

14

How is the Sartorius Muscle described?

It is Long, and Thin

15

In which direction does the Sartorius Muscle run?

Inferomedially

16

Where is the Sartorius Muscle positioned, in relation to the other Muscles of the Anterior Compartment of the Thigh?

It is more Superficial

17

Where does the Sartorius Muscle originate from?

Anterior Superior Iliac Spine

18

Where does the Sartorius Muscle attach distally?

Superior, Medial surface of the Tibia

19

What is the function of the Sartorius Muscle?

1. Flexion of the Hip Joint
2. Abduction of the Hip Joint
3. Lateral Rotation of the Hip Joint
4. Flexion of the Knee Joint

20

What is the innervation of the Sartorius Muscle?

The Femoral Nerve (L2-L4)

21

How many Muscles is the Quadriceps Femoris Muscles formed of?

4

22

What are the 4 Quadriceps Femoris Muscles?

3 x Vastus Muscles:
1. Vastus Lateralis Muscle
2. Vastus Intermedius Muscle
3. Vastus Medialis Muscle

1 x Rectus Femoris:
1. Rectus Femoris Muscle

23

Where does the Vastus Lateralis Muscle originate from?

1. Greater Trochanter of the Femur
2. Lateral Lip of the Linea Aspera of the Femur

24

What is the function of the Vastus Lateralis Muscle?

1. Extension of the Knee Joint
2. Stabilization of the Patella

25

What is the innervation of the Vastus Lateralis Muscle?

The Femoral Nerve (L2-L4)

26

Where does the Vastus Intermedius Muscle originate from?

1. Anterior Surface of the Femoral Shaft
2. Lateral Surface of the Femoral Shaft

27

What is the function of the Vastus Intermedius Muscle?

1. Extension of the Knee Joint
2. Stabilization of the Patella

28

What is the innervation of the Vastus Intermedius Muscle?

The Femoral Nerve (L2-L4)

29

Where does the Vastus Medialis Muscle originate from?

1. Intertrochanteric Line of the Femur
2. Medial Lip of the Linea Aspera of the Femur

30

What is the function of the Vastus Medialis Muscle?

1. Extension of the Knee Joint
2. Stabilization of the Patella
Note - Particularly due to its Horizontal Fibers at the Distal End