| A | B |
|---|
| respiratory | takes in oxygen & removes carbon dioxide & water |
| respiratory | trachea, bronchioles, lungs, mouth |
| endocrine | secretes hormones that control bodily functions |
| endocrine | pituitary gland, adrenal glands, thymus gland, thyroid gland, ovary, testes |
| digestive | receives, breaks down, and absorbs food nutrients by body cells |
| digestive | esophagus, stomach, intestines |
| digestive | breaksdown foodstuffs & absorbs them into the circulatory system |
| circulatory | transports oxygen in the blood |
| circulatory | heart, arteries, veins, capillaries |
| muscular | maintins the body's heat & posture |
| nervous | coordinates body actions & monitors the environment |
| nervous | brain, nerves |
| integumentary | skin, hair & nails |
| integumentary | first line of defense against infection; maintains body temperature |
| reproductive | produce offspring to maintain the species, produces male and female sex cells |
| reproductive | uterus, fallopian tubes, testes, vas deferens |
| excretory | ureters, urethra, bladder |
| excretory | removes liquid and solid wastes from the body |
| muscular | moves bones & protects organs |
| skeletal | cartilage, bones, joints |
| skeletal | provides support & protection |
