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Straight head of rectus femoris
Other Terms:
Caput rectum (Musculus rectus femoris),
Caput rectum musculus rectus femoris
Muscle parts
Straight head; Reflected head
Latin name
Musculus quadriceps femoris – Musculus rectus femoris
Latin muscle parts
Caput rectum; Caput reflexum
Group
Thigh muscle – anterior compartment
Etymology
The English name for this muscle is the straight muscle of the thigh. The word rectus is Latin for “straight.” The word femur is Latin for “thigh.”
Origin
Anterior inferior spine of the ilium (straight tendon); superior groove of the acetabulum and from the anterior surface of the fibrous capsule of the hip joint (reflected tendon)
Insertion
Tibial tuberosity (the patella is a sesamoid bone within the quadriceps tendon, the combined tendon of the rectus and vasti muscles; proximal to the patella the tendon is named the quadriceps tendon, distal to the patella the tendon is called the patellar ligament)
Action
Flexion of the hip; extension of the knee.
Nerve supply
Femoral nerve (L2, L3,and L4)
Blood supply
From proximal to distal, the muscle is supplied by the deep femoral artery, the femoral artery, the descending branch of the lateral circumflex artery, and from the genicular anastomoses around the knee.
Latin
Caput rectum musculus rectus femoris
