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Gluteal region Objectives: 1. To understand the surface anatomy of the gluteal region. 2. To understand the cutaneous innervation of the gluteal region. 3. To learn the muscles of the gluteal region, including their attachments, action, innervations, and blood supply. 4. To learn the ligaments of the pelvis which convert the greater and lesser sciatic notches into foramen. 5. To learn the structures which pass through the greater and lesser sciatic foramen. Peripheral cutaneous nerves: Superior cluneal from to Middle cluneal from to Inferior cluneal from to Greater sciatic foramen: boundaries contents above piriformis contents below piriformis Lesser sciatic foramen boundaries contents Muscles of the gluteal region: gluteus maximus O: I: A: n: a: gluteus medius O: I: A: n: a: gluteus minimus O: I: A: n: a: piriformis O: I: A: n: a: obturator internus O: I: A: n: a: superior gemellus O: I: A: n: a: inferior gemellus O: I: A: n: a: quadratus femoris O: I: A: n: a: tensor fascia latae: O: I: A: n: a: Posterior Thigh Objectives: 1. To understand the cutaneous innervation of the posterior thigh. 2. To learn the muscles of the posterior thigh, including their attachments, action, innervations, and blood supply. Cutaneous nerves: Posterior femoral cutaneous from to Lateral sural cutaneous from Medial sural cutaneous from popliteal fossa (diamond-shaped) boundaries Posterior thigh muscles (hamstrings): biceps femoris long head O: I: A: n: a: short head O: I: A: n: a: semitendinosus O: I: A: n: a: semimembranosus O: I: A: n: a: