The Thigh | Muscles of the Anterior Compartment [Quadriceps]

The video tutorial provides an in-depth look at the anterior compartment of the thigh, focusing on the quadriceps femoris muscles, which are primarily responsible for knee extension. It covers the identification and function of the four main quadriceps muscles: rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius. The tutorial also discusses the vastus medialis obliquus and its role, as well as two lesser-known muscles, articularis genus and tensor vastus intermedius, highlighting their anatomical features and functions.

Which muscle is not part of the quadriceps group but is located in the anterior compartment of the thigh?

• Rectus femoris

• Vastus intermedius

• Vastus medialis

• Sartorius

What is the primary function of the quadriceps femoris muscles?

• Hip flexion

• Knee extension

• Ankle dorsiflexion

• Hip abduction

Which muscle is known for having a part called the vastus medialis obliquus?

• Vastus intermedius

• Vastus lateralis

• Vastus medialis

• Rectus femoris

What is the function of the vastus medialis obliquus?

• To extend the knee

• To abduct the thigh

• To stabilize the patella medially

• To flex the hip

What distinguishes the rectus femoris from the other quadriceps muscles?

• It is located in the posterior compartment

• It can flex the hip

• It does not insert on the patellar tendon

• It is a one-joint muscle

Where do all four quadriceps muscles insert distally?

• On the fibular head

• On the iliac crest

• On the tibial tuberosity via the patellar ligament

• On the femoral head

What is the role of the articularis genus muscle?

• To pull the suprapatellar bursa proximally

• To stabilize the patella

• To flex the hip

• To extend the knee

Which muscle is known for its high genetic variability and is not commonly illustrated in textbooks?

• Rectus femoris

• Tensor vastus intermedius

• Vastus lateralis

• Sartorius

What is the primary action of the tensor vastus intermedius?

• To mediate the action of vastus intermedius

• To abduct the thigh

• To flex the hip

• To extend the knee

Which artery primarily supplies blood to the tensor vastus intermedius?

• Femoral artery

• Lateral circumflex femoral artery

• Popliteal artery

• Anterior tibial artery