| A | B |
|---|
| sagittal plane | lengthwise plane, divides a structure into right and left sections |
| midsagittal plane | sagittal plane that divides the body itno two equal halves |
| frontal (coronal ) plane | lengthwise plane that divides a structure into anterior and posterior sections |
| transverse plane | horizaontal plane that divides a structure into upper and lower sections |
| ventral cavity | large cavities that compose the anterior region of the body |
| diaphragm | muscular wall that separates the thoracic cavities from the abdominopelvic cavities |
| thoracic caavity | large ventral cavity above the diaphragm, contains the heart and lungs |
| mediastinum | midportion of thoracic cavity, contains heart and trachea |
| pleural cavities | right and left portions of the thoracic cavity, contain the lungs |
| abdominopelvic cavity | large ventral cavities composing the lower portion of the anterior region of the body |
| abdominal cavity | below the diaphragm, contains stomach, intestines, liver, etc. |
| pelvic cavity | below the abdominal cavity, contains reproductive organs, urinary bladder |
| dorsal cavities | cavities on the back region of the body |
| cranial cavity | dorsal cavity that contains the brain |
| spinal cavity | dorsal cavity that contains the spinal cord |
