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Dorsal Cavity

Contains the cranial cavity and the vertebral canal; brain and spinal cord.

Cranial Cavity

A dorsal body cavity enclosed by the cranium, containing the brain.

Spinal Cavity

A dorsal body cavity within the spinal column that contains the spinal cord.

Ventral Cavity

Contains the thoracic, abdominal, and pelvic cavities.

Thoracic Cavity

Chest cavity that retains the heart and lungs.

Contains Pleural Cavity: A fluid-filled cavity between the parietal and visceral pleura surrounding the lungs.

Contains Pericardial Cavity: The space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement.

Abdominal Cavity

The body cavity that primarily houses parts of the digestive, excretory, and reproductive systems. It is separated from the more cranial thoracic cavity by the diaphragm.

Pelvic Cavity

Space below the abdomen containing portions of the intestines, rectum, urinary bladder, and reproductive organs.

Nasal Cavity

The cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward and away form the lungs.

Oral Cavity

Smaller cavity located inside the head; also known as the buccal cavity; contains the teeth and tongue.

Ear Cavity

Cavity containing the auditory components.

Parietal Serosa

The part of the membrane that lines the cavity walls. Usually the furthest away from the organ, parie=wall.

Visceral Serosa

Serous membrane that covers external surface of organs within the cavities.


Covering of the lungs and thoracic cavity that is moistened with serous fluid to reduce friction during respiratory movements of the lungs.


Double-layered membrane surrounding the heart.


The double-layered membrane that protects and supports the abdominal organs.

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