Biceps femoris: origin, insertion, action and innervation.
Gluteus Maximus – Attachments, Actions & Innervation
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The gluteus maximus muscle is the largest and strongest of the three muscles that form your buttocks.
Gluteus Maximus
Attachments of Gluteus Maximus: Origin & Insertion
Origin: (proximal attachments)
a.Surface of ilium posterior to posterior gluteal line and posterior inferior surface of sacrum and coccyx.
Insertion: (distal attachments)
a.Gluteal tuberosity of femur and iliotibial tract (or band).
Find out how to learn all the muscles of the human body with quizzes and free labeling diagrams.
Actions of Gluteus Maximus on the thigh (femur):
a. Extends thigh at the hip.
b. Laterally Rotates thigh at the hip.
c. Abducts thigh at the hip.
(The inferior fibers also stabilize the extended knee by tightening iliotibial tract).
Nerve to Muscle and its Spinal Segment:
a. Inferior gluteal nerve (L5, S1, S2).
An Overview of the Posterior Muscles of the Thigh:
Muscles That Act On The Posterior Thigh (From The Hip)