Muscles- THE ANTERIOR COMPARTMENT OF THE THIGH

Question 1

In general, what are the Actions of the Muscles in the ANTERIOR COMPARTMENT of the Thigh?

Answer 1

HIP FLEXION

KNEE EXTENSION

Question 2

Which NERVE Innervates the Muscles of the ANTERIOR COMPARTMENT?

Answer 2

The Femoral Nerve (L2,L3,L4)

Question 3

List the Muscles of the ANTERIOR COMPARTMENT of the Thigh

Answer 3

1. Sartorius
2. Iliopsoas
3. Pectineus
4. Vastus Medialis
5. Vastus Intermedius
6. Vastus Lateralis
7. Rectus Femoris

Question 4

What is the proximal attachment of the Pectineus muscle?

Answer 4

Superior Pubic Ramus

Question 5

What is the Distal attachment of the Pectineus muscle?

Answer 5

Pectineal Line of the Femur

Question 6

Pectineus Attachments

Answer 6

Question 7

Pectineal Line of Femur

Answer 7

Question 8

What are the actions of the Pectineus Muscle?

Answer 8

Hip Flexion and Adduction

Question 9

Apart from the femoral nerve, which other nerve may also innervate the Pectineus muscle?

Answer 9

The OBTURATOR NERVE

• The pectineus is considered TRANSITIONAL MUSCLE between the anterior and medial compartments
• The Pectineus can both Flex and Adduct the Hip

Question 10

What is the most powerful flexor of the hip joint?

Answer 10

The ILIOPSOAS

Question 11

What is the proximal attachment of the Psoas Major and Psoas Minor Muscles?

Answer 11

• Psoas Major- T12-L5 Vertebra Transverse processes and Discs

-Psoas Minor- T12-L1Vertebra Transverse processes and Discs

Question 12

What is the Distal attachment of the Psoas Major and Psoas Minor Muscles?

Answer 12

• Psoas Major- Lesser Trochanter of the Femur

-Psoas Minor- Pectineal Line

Question 13

What Nerves innervate the Psoas Muscle?

Answer 13

Anterior Rami of L1, L2, L3

Question 14

Psoas Muscle

Answer 14

Question 15

What is the proximal attachment of the ILIACUS MUSCLE?

Answer 15

Iliac Crest, Iliac fossa, Sacroiliac Ligaments

Question 16

What is the Distal attachment of the ILIACUS MUSCLE?

Answer 16

Lesser Trochanter

Question 17

What Nerve Innervates the Iliacus Muscle?

Answer 17

FEMORAL NERVE (L2, L3, L4)

Question 18

What is the Action of the ILIOPSOAS MUSCLE?

Answer 18

Hip Flexion

Question 19

IlIACUS

Answer 19

Question 20

What is the proximal attachment of the SARTORIUS MUSCLE?

Answer 20

Anterior Superior Iliac Spine

Question 21

What is the distal attachment of the SARTORIUS MUSCLE?

Answer 21

Superior part of the Medial surface of the TIBIA

Question 22

What Nerve Innervates the SARTORIUS MUSCLE?

Answer 22

Femoral Nerve (L2, L3, L4)

Question 23

What are the Actions of the SARTORIUS Muscle?

Answer 23

Hip Flexion, Hip Abduction, Lateral Rotation of the Thigh

Question 24

What is the LONGEST MUSCLE in the body?

Answer 24

SARTORIUS

Question 25

SARTORIUS MUSCLE

Answer 25

Question 26

What are the components of the QUADRICEPS FEMORIS?

Answer 26

1. Vastus Lateralis 2. Vastus Medialis 3. Vastus Intermedius 4. Rectus Femoris

Question 27

What is the Proximal Attachment of the VASTUS LATERALIS ?

Answer 27

Greater Trochanter Linea Aspera of Femur

Question 28

Linea Aspera of Femur

Answer 28

Question 29

What is the Proximal Attachment of the VASTUS MEDIALIS ?

Answer 29

Intertrochanteric Line Linea Aspera of Femur

Question 30

What is the Proximal Attachment of the VASTUS INTERMEDIUS ?

Answer 30

Shaft of the Femur

Question 31

What is the Proximal Attachment of the RECTUS FEMORIS?

Answer 31

Anterior Inferior Iliac Spine

Question 32

Anterior Inferior Iliac Spine

Answer 32

Question 33

Where does the QUADRICEPS FEMORIS attach Distally?

Answer 33

Patella via the Quadriceps Tendon

Question 34

Quadriceps Tendon

Answer 34

Question 35

What is the Patellar Ligament?

Answer 35

-Continuation of the Quadriceps Tendon -Connects the Patellar to the Tibial Tuberosity