THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The pelvic cavity is a bowl-like structure that sits below the abdominal cavity. The true pelvis, or lesser pelvis, lies below the pelvic brim (Figure 1). This landmark begins at the level of the sacral promontory posteriorly and the pubic symphysis anteriorly.

Detailed explanation-2: -These muscles relax to allow micturition and defecation. During activities such as coughing or lifting heavy objects, the pelvic floor helps support the maintenance of intra-abdominal pressure. The pelvic floor consists of the urogenital triangle, the urogenital diaphragm, and the pelvic diaphragm.

Detailed explanation-3: -There are three bones of the pelvis: the hip bone, sacrum and coccyx.