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Body Cavities

Lecture Unit 1

Cranial Posterior aspect cavity. Formed by cranium; houses brain
Vertebral canal Posterior aspect cavity. Formed by vertebral column; contains spinal cord.
Thoracic Ventral Cavity. Chest cavity; bordered anteriorly and laterally by chest wall and inferiorly by diaphragm. Three components: Mediastinum, Pericardial, Pleural.
Mediastinum Contains the pericardial cavity, thymus, trachea, esophagus, and major blood vessels.
Pericardial Contains the heart. Serous Membrane: Pericardium.
Pleural Contains the lungs. Serous Membrane: Pleura.
Abdominopelvic Ventral Cavity. Composed of two parts: abdominal and pelvic cavities.
Abdominal Bordered superiorly by diaphragm & inferiorly by horizontal plane between superior ridges of hip bones. Associated w/ abdominal viscera: stomach, spleen, liver, pancreas, small intestine, most of large intestine, kidney, ureters. S. Membrane: Peritoneum.
Pelvic Between hip bones & interior to horizontal plane between the superior ridges of the hip bones. Associated w/ pelvic viscera: urinary bladder & urethra, internal reproductive organs, some of the large intestine. S. Membrane: Peritoneum.
Serous membranes Consist of a continuous 2-layered sack. The visceral layer covers organs. The parietal layer lines the body cavity. Contains lubricating film of serous fluid to reduce friction.
Three serous membranes in the thoracic and abdominopelvic body cavities 1. Pericardium 2. Pleura 3. Peritoneum
Created by: punkaloo