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Body cavities
| Term | Definition |
|---|---|
| Dorsal cavity | Posterior cavity of the body that houses the brain and spinal column. |
| Cranial cavity | Area of the body containing the brain |
| Spinal cavity | Area of the body containing the spinal cord. |
| Thoracic cavity | Area of the body divided into 2 cavities: the left pleural cavity contains the left lung and the right pleural cavity contains the right lung |
| Abdominopelvic cavity | Area below the diaphragm, with no separation between the abdomen and pelvis. |
| Abdominal cavity | Area of the body that contains the stomach, liver, gallbladder, pancreas, spleen, small intestine, appendix, and part of the large intestine. |
| Pelvic cavity | Area of the body containing the urinary bladder, reproductive organs, rectum, remainder of large intestine, and appendix. |
| Orbital cavity | Contains the eye and its external structures |
| Nasal cavity | One of the pairs of cavities between the anterior nares and the nasopharynx. |
| Oral (buccal) cavity | Encloses the teeth and tongue. |
| Cells | The basic unit of structure and function of all living things |
| Tissues | Special cells grouped according to function, shape, size, and structure. |
| Organs | Tissues, in turn, form larger functional and structural units. |
| Organ system | Organs that are grouped together because more than one is needed to perform a function. |