ant thigh code

Question 1

What is the function of the muscles in the anterior compartment of the thigh?

Answer 1

These muscles primarily act to extend the lower limb at the knee joint.

Question 2

Which nerve innervates the muscles of the anterior compartment of the thigh?

Answer 2

The femoral nerve (L2-L4) innervates these muscles.

Question 3

What artery supplies the muscles of the anterior compartment of the thigh?

Answer 3

The femoral artery provides the arterial supply.

Question 4

Which muscles make up the iliopsoas?

Answer 4

The iliopsoas consists of the psoas major and iliacus.

Question 5

Where do the iliopsoas muscles originate and insert?

Answer 5

The psoas major originates from the lumbar vertebrae, and the iliacus from the iliac fossa. Both insert onto the lesser trochanter of the femur.

Question 6

What is the action of the iliopsoas muscles?

Answer 6

The iliopsoas muscles flex the thigh at the hip joint.

Question 7

How is the iliopsoas innervated?

Answer 7

The psoas major is innervated by anterior rami of L1-3, while the iliacus is innervated by the femoral nerve.

Question 8

How many muscles are in the quadriceps femoris group?

Answer 8

The quadriceps femoris group consists of four muscles: vastus lateralis, vastus intermedius, vastus medialis, and rectus femoris.

Question 9

Where does the quadriceps femoris group insert?

Answer 9

The quadriceps femoris group inserts onto the patella via the quadriceps tendon.

Question 10

What is the action of the quadriceps femoris group?

Answer 10

The quadriceps femoris group extends the knee joint and also stabilizes the patella.

Question 11

What is the origin of the vastus lateralis muscle?

Answer 11

The vastus lateralis originates from the greater trochanter and the lateral lip of the linea aspera of the femur.

Question 12

What is the origin of the vastus intermedius muscle?

Answer 12

The vastus intermedius originates from the anterior and lateral surfaces of the femoral shaft.

Question 13

What is the origin of the vastus medialis muscle?

Answer 13

The vastus medialis originates from the intertrochanteric line and the medial lip of the linea aspera of the femur.

Question 14

Where does the rectus femoris originate?

Answer 14

The rectus femoris originates from the anterior inferior iliac spine and the ilium of the pelvis.

Question 15

What is the action of the rectus femoris?

Answer 15

The rectus femoris extends the knee and flexes the hip (the only quadriceps muscle that crosses both joints).

Question 16

Where does the sartorius muscle originate and insert?

Answer 16

The sartorius originates from the anterior superior iliac spine and inserts on the superior, medial surface of the tibia.

Question 17

What actions does the sartorius muscle perform?

Answer 17

The sartorius flexes, abducts, and laterally rotates the hip joint and flexes the knee joint.

Question 18

Where does the pectineus muscle originate and insert?

Answer 18

The pectineus originates from the pectineal line of the pubis and inserts onto the pectineal line of the femur.

Question 19

What is the action of the pectineus muscle?

Answer 19

The pectineus performs adduction and flexion at the hip joint.

Question 20

Which nerves innervate the pectineus muscle?

Answer 20

The pectineus is innervated by the femoral nerve and may also receive a branch from the obturator nerve.

Question 21

What test is used to assess the femoral nerve using the quadriceps femoris?

Answer 21

To test the femoral nerve, a patient is asked to extend the knee against resistance. Absence of contraction indicates nerve damage.