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BodyCavitie&Membrane
AP CHP 1
Body Cavities | Closed, fluid-filled spaces that contain organs |
What do body cavities do? | Protect internal organs and allow them to change shape |
3 major cavities(regions) | Thoracic, Abdominal, Pelvic |
Serosa (serous membrane) | Thin tissue lining on inside walls and covering organs |
Abdominopelvic cavity | Contains the thoracic, abdominal, and pelvic cavities together |
Dorsal Cavity | Contains the cranial cavity, brain, and vertebral cavity together |
Ventral Cavity | Contains the thoracic, abdominal cavity, diaphragm, spinal cord, and vertebra |
Pericardial Cavity | Contains the heart; part of the thoracic cavity |
Mediastinum | Contains the great vessels, heart, esophagus, trenches, nerves, thymus, and some lymph nodes; area behind sternum part of thoracic cavity |
Diaphragm | Forms the floor; thoracic cavity is above diaphragm |
Parietal | Attached to/part of/surrounding a structure |
Pleura | Serous membrane covering the thoracic cavity and surrounds each lung |
Pericardium | Serous membrane covering the heart and lining the mediastinum |
Peritoneum | Serous membrane lining the thoracic cavity and viscera |
Viscera | Organ |
Peritoneal Cavity | Diaphragm to pelvic brim, surrounds digestive organs,(intestines,stomach) |
Retroperitoneal Space | Area behind peritoneal cavity; contains kidneys, ureters, pancreas, and duodenum |
Pelvic Cavity | Pelvic brim to pelvic floor; reproductive organs, bladder, and rectum |
Serous Fluid | Secreted by serous membrane; reduces friction of organs, prevents sticking of membranes |