Knee Muscles and Movements Quiz

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Questions and Answers

Which of these muscles is responsible for both knee flexion and knee extension?

Vastus lateralis
Semi-membranosus
Rectus femoris (correct)
Biceps femoris (correct)

The semi-tendinosus muscle is involved in medial rotation of the knee.

True (A)

Name a muscle that contributes to both knee flexion and hip flexion.

Rectus femoris

The muscle primarily responsible for lateral rotation of the knee is the ______.

<p>Vastus lateralis</p> Signup and view all the answers

Match the knee muscles with their primary function.

<p>Biceps femoris = Knee flexion and thigh extension Semi-membranosus = Knee flexion and medial rotation of the knee Vastus medialis = Knee extension Rectus femoris = Knee extension and hip flexion</p> Signup and view all the answers

Flashcards

Biceps femoris

A muscle involved in lateral rotation and flexion of the knee, also extends the thigh.

Semi-membranosus

A muscle that primarily medially rotates and flexes the knee.

Vastus lateralis

A muscle that contributes to lateral rotation and both flexion and extension of the knee.

Rectus femoris

A muscle that medially rotates at the hip and flexes the hip, also extends the knee.

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Gracilis

A muscle involved in medial rotation, flexion at the knee, and extension of the thigh.

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Study Notes

Knee Muscles and Movements

Knee Muscles: Biceps femoris, Semi-membraneux, Semi-tendineux, Vastus externus, Rectus femoris, Vastus internus, Gracilis
Rotational Movements:
- Lateral Rotation: Biceps femoris participates in lateral rotation.
- Medial Rotation: Specific muscles are not listed for medial rotation in the table.
Flexion: Biceps femoris, Semi-membraneux, and Semi-tendineux all participate in knee flexion.
Extension: Vastus externus, Rectus femoris, and Vastus internus all participate in knee extension, as does the biceps femoris on its proximal portion. Gracilis also plays a role.
Additional Notes: The Table shows 'X' indicating involvement. Biceps femoris flexes the hip but extends the knee, whereas the vastus externus extends the knee.