Question

fill in the blank boxes all 6

Correctly label the anterior muscles of the thigh. 35 Quadriceps femoris: Vastus medialis Patellar ligament Quadriceps femoris: Vastus lateralis Quadriceps femoris: Vastus intermedius Quadriceps femoris tendon Patella Reset Zoom

Answer 1

FROM LEFT SIDE

1 . QUADRICEPS FEMORIS : Vastud intermedius

• Proximal attachment: Anterior and lateral surfaces of the femoral shaft.
• Actions: Extends the knee joint and stabilises the patella.
• Innervation: Femoral nerve.

2 . QUADRICEPS FEMORIS : Vastus lateralis

• Proximal attachment: Originates from the greater trochanter and the lateral lip of linea aspera.
• Actions: Extends the knee joint and stabilises the patella.
• Innervation: Femoral nerve.

3 . PATELLA

The patella, also known as the kneecap, is a flat, circular-triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. The patella is found in many tetrapods, such as mice, cats and birds, but not in whales, or most reptiles.

FROM RIGHT SIDE

1 . QUADRICEPS FEMORIS : Vastus medialis

• Proximal attachment: The intertrochanteric line and medial lip of the linea aspera.
• Actions: Extends the knee joint and stabilises the patella, particularly due to its horizontal fibres at the distal end.
• Innervation: Femoral nerve.

2 . QUADRICEPS FEMORIS TENDON

The four quadriceps muscles meet just above the kneecap (patella) to form the quadriceps tendon. The quadriceps tendon attaches the quadriceps muscles to the patella. The patella is attached to the shinbone (tibia) by the patellar tendon. Working together, the quadriceps muscles, quadriceps tendon and patellar tendon straighten the knee.

3 . PATELLAR LIGAMENT

The patellar ligament is an extension of the quadriceps tendon. It extends from the patella, otherwise known as the kneecap. A ligament is a type of fibrous tissue that usually connects two bones.