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A&P Introduction
Directional Terms, Body Planes and Body Cavities
| Term | Definition |
|---|---|
| Anatomy | the branch of science that deals with the bodily structures of humans. |
| Physiology | the branch of science that deals with the normal functioning of a human. |
| Anatomical Postion | A standing position with the face directed forward, the arms at the side, and palms of hands facing forward. |
| Superior | Towards the head end of the body, or upper |
| Inferior | Away from the head, or lower |
| Anterior | The front of the body |
| Ventral | The front of the body but relating to the under side of an animal |
| Posterior | The back of the body |
| Dorsal | The back of the body but relating to the upper side of an animal |
| Medial | Near the midline of the body |
| Lateral | Away from the midline of the body |
| Proximal | Near the point of attachment |
| Distal | Away from the point of attachment |
| Supine | Laying on their back |
| Prone | Laying on their stomach |
| Frontal Plane | Divides the body into posterior and anterior portions |
| Sagittal Plane | Divides the body into left and right portions |
| Transverse Plane | Divides the body into superior and inferior portions |
| Superficial | On or close to the surface |
| Deep | Extending far down from the top or surface |
| Body Cavities | Space within the body which contains vital organs |
| Dorsal Body Cavity | Comprised of the cranial & spinal cavities |
| Ventral Body Cavity | Comprised of thoracic & abdominopelvic cavities |
| Cranial Cavity | Contains the brain |
| Spinal Cavity | Contains the spinal cord |
| Thoracic Cavity | Contains the upper half of the body above the diagram |
| Pleural Cavity | Contains the lungs |
| Pericardial Cavity | Contains the heart |
| Mediastinum | Central region that separates the lungs, sits between the sternum and the vertebral column |
| Abdominopelvic Cavity | Comprised of the abdominal and pelvic cavities |
| Abdominal Cavity | Upper part of the abdominopelvic cavity; contains the stomach, small intestines, most of the large intestines, liver, gallbladder, pancreas, and spleen. |
| Pelvic Cavity | Lower part of the abdominopelvic cavity; contains the urinary bladder, reproductive organs, and the last part of the large intestine |