| A | B |
|---|
| mandible | jawbone |
| body cavity | a space in the body that contains organs |
| cranial cavity | cavity located in the head containing brain and skull |
| spinal cavity | cavity that contains spinal cord and protected by vertebrae |
| thoracic cavity | located in the trunk; contains heart and lungs; protected by ribs |
| abdominal cavity | located between diaphragm and pelvis; contains liver, gall bladder, stomach, etc. |
| pelvic cavity | contains bladder, rectum, and reproductive organs |
| cell | the basic unit of all living tissue |
| tissue | collection of similar cells which form organs |
| organ | collection of similar tissues that act together |
| vital organs | organs that are essential for life (brain, heart, lungs) |
| body system | group of rogans that work together |
| respiratory system | airway and lungs; supplies body with oxygen and removes carbon dioxide |
| circulatory system | heart, blood, blood vessels; carries nutrients and oxygen through blood to cells |
| nervous system | brain, spinal cord, nerves; transmits messages to and from brain |
| musculoskeletal system | bones, ligaments, muscles; provides body's framework; allows movement; protects organs |
| integumentary system | skin, hair, nails; prevents infection and dehydration; helps regulates temperature |
| endocrine system | glands; secretes hormones and other substances |
| digestive system | mouth, esophagus, stomach, etc; breaks down food |
| genitourinary system | kidneys and bladder, uterus and genitalia; removes wasted, regulates water, allows for reproduction |
