Muscles of the knee

Question 1

Origin, insertion, innervation and movement of the RECTUS FEMORIS muscle

Answer 1

• Origin: anterior inferior iliac spine (AIIS)
• Insertion: through the patellar tendon to the tibial tuberosity, patella
• Nerve: femoral nerve
• Mov: hip flexion and knee extension

Question 2

Origin, insertion, innervation and movement of the VASTUS MEDIALIS muscle

Answer 2

• Origin: intertrochanteric line, medial lip of the linea aspera, medial supracondylar line of femur
• Insertion: tibial tuberosity via the patellar tendon and patella
• Nerve: femoral nerve
• Mov: knee extension

Question 3

Origin, insertion, innervation and movement of the VASTUS LATERALIS muscle

Answer 3

• Origin: intertrocanteric line, greater throcanter, lateral lip of the linea aspera
• Insertion: tibial tuberosity via the patellar tendon and patella
• Nerve: femoral nerve
• Mov: knee extension

Question 4

Origin, insertion, innervation and movement of the VASTUS INTERMEDIUS muscle

Answer 4

• Origin: proximal femur antero lateraly
• Insertion: tibial tuberosity via the patelar tendon and patella
• Nerve: femoral nerve
• Mov: knee extension

Question 5

Origin, insertion, innervation and movement of the SEMIMEMBRANOSUS muscle

Answer 5

-Origin: ischial tuberosity
-Insertion: medial tibial condyle
-Nerve: sciatic nerve
-Mov:
>hip extension and internal rotation
>knee flexion and internal rotation

Question 6

Origin, insertion, innervation and movement of the SEMITENDINOSUS muscle

Answer 6

-Origin: ischial tuberosity
-Insertion: medial surface of proximal tibia (pes anserinus)
-Nerve: sciatic nerve
-Mov:
>hip extension and internal rotation
>knee flexion and internal rotation

Question 7

Origin, insertion, innervation and movement of the BICEPS FEMORIS muscle

Answer 7

-Origin:
>long head: ischial tuberosity
>short head: lateral lip of the linea aspera
-Insertion: head of fibula
-Nerve: sciatic nerve
-Mov:
>hip extension and external rotation
>knee flexion and external rotation

Question 8

Origin, insertion, innervation and movement of the SARTORIUS muscle

Answer 8

-Origin: anterior superior iliac spine
-Insertion: proximal medial tibia (pes anserinus)
-Nerve: femoral nerve
-Mov:
>hip flexion, external rotation, abducion
> knee flexion, internal rotation

Question 9

Origin, insertion, innervation and movement of the GRACILIS muscle

Answer 9

-Origin: inferior pubic ramus, ischial ramus and pubic body
-Insertion: medial surface of proximal tibia (pes anserine)
-Nerve: obturator nerve
-Mov:
>hip adduction
>knee flexion

Question 10

Origin, insertion, innervation and movement of the muscle

Answer 10

• Origin:
• Insertion:
• Nerve:
• Mov: