WALL OF PELVIS

WALL OF PELVIS INCLUDING PELVIC DIAPHRAGM

Structures that Form the Walls:

1. Ilium: Largest and most medial bone of the pelvis
2. Ischium: Forms the posterior wall of the pelvis
3. Pubis: Forms the anterior wall of the pelvis
4. Sacrum: Forms the posterior wall of the pelvis
5. Coccyx: Forms the lowest part of the pelvis

Structures that Form the Pelvic Diaphragm:

1. Levator Ani: Muscles that form the pelvic diaphragm
2. Coccygeus: Muscles that form the pelvic diaphragm
3. Sacrotuberous Ligament: Connects the sacrum to the ischial tuberosity
4. Sacrospinous Ligament: Connects the sacrum to the ischial spine

Main Blood Vessels:

1. Internal Iliac Artery: Branches into the anterior and posterior divisions
2. Anterior Division: Supplies the anterior wall of the pelvis
3. Posterior Division: Supplies the posterior wall of the pelvis
4. Common Iliac Artery: Forms from the internal iliac artery
5. External Iliac Artery: Forms from the common iliac artery
6. Internal Pudendal Artery: Supplies the perineal region
7. External Pudendal Artery: Supplies the external genitalia

Main Nerves:

1. Pudendal Nerve: Supplies the perineal region
2. Ilioinguinal Nerve: Supplies the inguinal region
3. Genitofemoral Nerve: Supplies the external genitalia and femoral region
4. Obturator Nerve: Supplies the medial compartment of the thigh

Applied Aspect:

1. Childbirth: The pelvic diaphragm and walls are important structures during childbirth
2. Surgery: The pelvic blood vessels and nerves are important structures to consider during pelvic surgery
3. Trauma: The pelvic walls and diaphragm are vulnerable to injury during trauma
4. Degenerative Diseases: The pelvic joints and surrounding structures can be affected by degenerative diseases such as osteoarthritis

Blood Supply and Nerve Supply of Pelvis and Perineum:

1. Blood Supply → Internal Iliac Artery → Anterior and Posterior Divisions
2. Nerve Supply → Pudendal Nerve → Perineal Region
3. Blood Supply → Internal Pudendal Artery → Perineal Region
4. Nerve Supply → Ilioinguinal Nerve → Inguinal Region
5. Blood Supply → Genitofemoral Nerve → External Genitalia and Femoral Region

Flowchart of Blood Supply and Nerve Supply:

+---------------+ | Internal Iliac | | Artery | +---------------+ | | v +---------------+ | Anterior and | | Posterior Divisions | +---------------+ | | v +---------------+ | Pudendal Nerve | | (Perineal Region) | +---------------+ | | v +---------------+ | Internal Pudendal | | Artery (Perineal Region) | +---------------+