| A | B |
|---|
| epidermis | top layer of skin (dead) |
| dermis | second layer of skin (living) |
| marrow | soft center of bone that makes blood cells |
| joint | connection of 2 or more bones |
| ligament | material holding bones together at joints |
| cartilage | protective material on ends of bones |
| muscle fiber | muscle cell that shortens and lengthens making muscle contract and relax |
| tendon | tough fiber connecting muscle to bone |
| voluntary muscle | muscle you can control |
| involuntary muscle | muscle you don't need to control |
| nutrient | food your body needs; carbohydrates, proteins, fats, vitamins, minerals, water |
| carbohydrates | starch or sugar, provides energy |
| enzyme | chemical that breaks down food |
| esophagus | passage for food from mouth to stomach |
| mucus | sticky body fluid |
| small intestine | narrow winding tube where food is digested |
| pancreas | large gland, releases digestive enzymes into sm. intestine |
| bile | liquid produced by liver to digest fats |
| large intestine | wide tube where water, vitamins, minerals absorbed and wastes eliminated |
| excrete | to remove wastes |
| urine | liquid waste produced by kidneys |
| bladder | sac that stores urine until eliminated |
| diaphragm | muscle beneath lungs, helps you inhale/exhale |
| trachea | windpipe-throat to lungs |
| larynx | voice box-at top of trachea, contains vocal cords |
| diffusion | movement of particles from high concentration to low concentration |
| plasma | yellow, fluid part of blood |
| red blood cell | cell that carries oxygen |
| white blood cell | cell that protects from disease |
| platelets | cell pieces, release substance to help clot blood |
| artery | vessel carrying oxygenated blood AWAY from heart |
| capillary | tiny blood vessel allowing passage of nutrients and wastes between blood and cells |
| vein | vessel carrying without oxygen TO the heart |
| valve | structure in heart and veins of 2 flaps, prevents blood flowing backwards |
| respiration | chemical process to provide energy |
