| A | B |
| Cell | Smallest unit of life |
| Respiratory system | exchanges gases with atmosphere |
| Circulatory system | Moves blood through body |
| Dorsal | The back |
| Ventral | The belly |
| Anterior | The front |
| Posterior | The rear end |
| Lateral | The sides |
| Distal | Further from center |
| Proximal | Near the center |
| Atoms | Smallest units of matter |
| Organs | Groups of several tissue types |
| Responsiveness | Ability to react to environment |
| Digestion | Breakdown of foods |
| Muscles | Organs of movement |
| Endocrine system | Hormone secreting organs |
| Urinary system | Maintenance of water balance |
| Lymphatic system | Major immunity highway |
| Homeostasis | Regulation of chemical processes |
| Inferior | Below or lower |
| Caudal | Towards the tail (coccyx) |
| Superior | Above, on top |
| Medial | Towards the midline/ spine |
| Superficial | External |
| Deep | Internal |
| Cranial | Of the head |
| Viscera | Internal organs |
| Pleura | Lung containers |
| Pelvic | Of the hips |
| Hallux | Big toe |
| Femoral | Of the thigh |
| Otic | Ear |
| Optic | Of the eye |
| Gluteal | Buttocks |
| Manus | Hand |
| Thoracic | Upper torso/ chest |
| Abdominal | Lower torso/ belly |
| Axillary | Of the armpit |
| Inguinal | Of the groin |
| Calcaneal | Of the heel |
| Patellar | Of the kneecap |
| Buccal | Cheek area |
| Orbital | Eye socket |
| Cervical | Neck |
| Digit | Finger or toe |
| Lumbar | Lower spine |
| Thoracic | Mid spine |
| Sagittal | Cross section from head to coccyx |
| Transverse | Cross section from left to right |
| Vertebrae | Spinal bones |
| Pericardium | Membrane around the heart |
| Serosa | Membrane |
| Diaphragm | Divides chest from belly |
| Atmospheric pressure | Weight of air on body |
| Nutrient | Substance needed for survival |
| Growth | Increase of size |
| Reproduction | Increase of number |
| Excretion | Removal of wastes |
| Metabolism | Biological chemical processes |
| Catabolism | Breakdown of substances by body |