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Step 1
Read up on Latin roots to know that "sartorius" means "tailor." This muscle is used to assume the cross-legged position used by tailors in ancient Rome.
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Step 2
Examine the sartorius to see that it abducts, flexes and laterally rotates the thigh at the hip. It also flexes and medially rotates the leg at the knee. All five of these actions may be demonstrated by picking up your foot to look at the sole.
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Step 3
Observe how the sartorius originates from the anterior superior iliac spine by tendinous fibers that run across the anterior and upper portion of the thigh.
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Step 4
Look at the insertion of the sartorius via a tendon that joins with the tendons of the gracilis and semitendinosus called the pes anserinus which then inserts into the upper medial surface of the body of the tibia.
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Step 5
Research the nervous system to know that the nerve for the sartorius is the branches of femoral nerve from the second and third lumbar nerves.
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Step 6
Study the circulatory system to know that the blood supply for the sartorius are the muscular branches of the profunda femoris artery and the saphenous branch of the descending genicular artery.
