Anatomy lab: Muscles of the anterior and lateral thigh

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Rectus femoris

Origin: Ilium. Insertion: Tibia via patellar ligament. Action: Extends knee, flexes hip

Vastus intermedius

Origin: femur. Insertion: tibia via patellar ligament. Action: extends knee. Most deep of the quads

Vastus lateralis

Origin: femur. Insertion: tibia via patellar ligament. Action: extends knee. Most lateral of the quads

Vastus medialis

Origin: femur. Insertion: tibia via patellar ligament. Action: extends knee. Most medial of the quads

Sartorius

Origin: ilium. Insertion: medial tibia. Action: flexes and laterally rotates hip; and flexes knee

Vastus medialis

Picture 42, 2nd bottom line on the right

Vastus lateralis

Picture 42, 2nd from the bottom line, left side

Rectus femoris

Picture 42, bottom 3rd line on the left

Vastus intermedius

Picture 43, middle of the 3 on the left

Sartorius

Picture 44, top line

Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

What are the muscles of the quadriceps femoris?

Extends knee, flexes hip

What is the action of the rectus femoris?

Flexes and laterally rotates hip; and flexes knee

What is the action of the sartorius?

Extends knee

What is the action of the vastus intermedius?

Extends knee

What is the action of the vastus lateralis?

Extends knee

What is the action of the vastus medialis?

Tibia via patellar ligament

What is the insertion of the rectus femoris?

Medial tibia

What is the insertion of the sartorius?

Tibia via patellar ligament

What is the insertion of the vastus intermedius?

Tibia via patellar ligament

What is the insertion of the vastus lateralis?

Tibia via patellar ligament

What is the insertion of the vastus medialis?

Ilium

What is the origin of the rectus femoris?

Ilium

What is the origin of the sartorius?

Femur

What is the origin of the vastus intermedius?

Femur

What is the origin of the vastus lateralis?

Femur

What is the origin of the vastus medialis?


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