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A&P Body Cavities
Term | Definition |
---|---|
dorsal cavity | located on the posterior side of the body (contains cranial and vertebral cavity) |
ventral cavity | located on the anterior side of the body (contains thoracic and abdominopelvic cavity) |
cranial cavity | contains the brain |
vertebral cavity | contains the spinal cord |
thoracic cavity | upper torso, contains the heart, lungs, and major vessels |
mediastinum | area between the lungs |
inferior mediastinum | contains the heart and surrounding pericardia |
superior mediastinum | contains major blood vessels and thymus gland |
diaphragm | what separates the thoracic cavity from the abdominopelvic cavity |
superior abdominal cavity | contains the stomach, liver, gallbladder, pancreas, small intestine, kidneys, and part of the large intestine |
pelvic cavity | contains the reproductive organs, the urinary bladder, and part of the large intestine |
serous membranes | -outer (parietal) layer that attaches to the cavity -inner (visceral) layer that adheres to an organ -lines the inside walls of the ventral cavities and cover most of the internal and visceral organs |
pleura | serous membranes associated with the lungs |
parietal pleura | lines thoracic cavity |
visceral pleura | covers the lungs |
pleural cavity | separates the parietal pleura and visceral pleura, contains fluid to help reduce friction |
visceral pericardium | covers the heart |
pericardial cavity | separates the visceral and parietal cavity |
parietal pericardium | lines the fiberous pericardium within the inferior mediastinum |
parietal peritoneum | lines the abdominopelvic cavity |
visceral peritoneum | covers most organs in abdominopelvic cavity |
peritoneal cavity | thin space between the visceral peritoneum and parietal peritoneum |
retroperitoneal | organs not surrounded by peritoneal membrane |