Anterior Thigh Muscles Flashcards Preview

ESA 2- Musculoskeletal System > Anterior Thigh Muscles > Flashcards

Flashcards in Anterior Thigh Muscles Deck (30):
1

What can the musculature of the thigh be split into?

Anterior, medial and posterior

2

What does each compartment of the thigh have?

Distinct innervation and function

3

What are the muscles in the anterior compartment of the thigh innervated by?

The femoral nerve (L2-L4)

4

As a general rule, what do the muscles of the anterior thigh do?

Extend the leg at the knee joint

5

What muscles are in the anterior thigh?

Pectineus 
Sartorius 
Quadriceps femoris 
The end of the iliopsoas muscle passes into the anterior compartment

6

What is the iliopsoas muscle made up of?

Two muscles, the psoas major and the iliacus

7

Why is the iliopsoas commonly referred to as one muscle

Although they originate in different areas, but come together to form a tendon

8

How is the iliopsoas unlike many of the other anterior thigh muscles?

It doesn’t extend the leg at the knee joint

9

What is the innervation of the psoas major?

Anterior rami of lumbar nerves (L1, L2, L3)

10

What is the innervation of the iliacus?

Femoral nerve (L2, L3)

11

What is the arterial supply to the psoas major?

Lumbar arteries

12

What is the arterial supply of the iliacus?

Branches of the medial circumflex femoral artery

13

What is the main action of the iliopsoas?

Flexes the thigh at the hip joint
Stabilising joint

14

What muscle assist in the action of the iliopsoas?

Psoas minor

15

What is the innervation of the psoas minor?

Anterior rami of lumbar nerves (L1, L2)

16

What is the arterial supply of the psoas minor?

Lumbar arteries

17

What does the quadriceps femoris consist of?

Four individual muscles- the three vastus muscles, and the rectus femoris

18

What is the innervation of the quadriceps femoris?

Femoral nerve (L2, L3, L4)

19

What is the main action of the quadriceps femoris?

Extend leg at knee joint

20

What does the rectus femoris do?

Steadies the hip joint and helps iliopsoas flex thigh

21

Where does the sartorius run?

Across the thigh in a inferomedial direction

22

Where is the sartorius positioned?

More superficially that the other muscles in the leg

23

What is the innervation of the sartorius?

Femoral nerve (L2, L3)

24

What is the arterial supply of the sartorius?

Branches of the medial circumflex femoral artery

25

What is the main action of the sartorius?

Flexes, abducts, and laterally rotates the thigh at the hip joint 
Flexes leg at knee joint (medially rotating leg when knee is flexed)

26

What is the pectineus?

A flat muscle that forms the base of the femoral triangle

27

What can the pectineus be considered as?

A transitional muscle between the anterior thigh and medial thigh compartments

28

Why can the pectineus be considered as a transitional muscle?

Because it has dual innervation

29

What can be tested in suspected femoral nerve damage?

The quadriceps femoris

30

How are the quadriceps femoris muscles be tested?

The patient lies supine, with the knee slightly flexed. The patient is asked to extend the leg against resistance. The contraction of the quadriceps femoris should be visible