| A | B |
|---|
| organ | structure composed of different kinds of tissue |
| connective tissue | provides support for the body and connects all of its parts |
| aorta | largest artery in the body |
| atria | upper chambers of the heart |
| bile | enzyme produced by the liver |
| bladder | muscular organ that stores urine |
| brain | consists of the cerebrum, brainstem, and cerebellum |
| brainstem | controls body functions that occur automatically |
| capillary | blood vessels with walls that are one cell thick and allow for diffusion |
| cartilage | cushiony substance which is found at the ends of bones |
| central nervous system | consists of the brain and spinal cord |
| cilia | tiny hair-like projections found in the nose |
| concussion | a bruise-like injury to the brain |
| corpus collosum | connects the cerebral hemispheres |
| cytoplasm | area between the nucleus and the cell membrane |
| dendrite | part of the nerve cell that receives stimuli |
| diaphragm | muscle that plays an important part in breathing |
| enzyme | substance that speeds up chemical reactions |
| excretion | process by which wastes are removed by the body |
| femur | large bone in the upper leg |
| fiber | nutrient that cannot be broken down by the body |
| fibrin | chemical that is important in blood clotting |
| follicles | openings in skin where hair grows out of |
| hemoglobin | chemical found in red blood cells that binds to oxygen |
| ball and socket joint | hip and shoulder |
| involuntary muscles | smooth muscles |
| jobs of the digestive system | breaks down food, gets rid of waste, absorbs nutrients |
| jobs of the nervous system | receives informaiton, responds to information, maintains stable internal conditions |
| jobs of the skeleton | provides shape and support, enables movement, and protects internal organs |
| large intestine | absorbs water from waste |
| larynx | organ that contains the vocal cords |
| lymphatic system | network of vessels that returns fluid to the bloodstream |
| marrow | soft connective tissue found in the spaces of spongy bones |
| nephrons | filtering factories inside the kidneys |
| nerve cells | composed of dendrites, axons, and cell bodies |
| neuron | another word for nerve cell |
| pacemaker | group of cells that adjusts heart rate |
| peristalsis | process that keeps food moving through the digestive system |
| pharynx | organ which is used by the digestive and respiratory system |
| plasma | liquid part of the blood |
| pores | openings in skin where perspiration exits the body |
| skull | cranium |
| small intestine | organ where nutrients are absorbed into the bloodstream |
| tendon | strong connective tissue that connects muscle to bone |
| trachea | also known as your windpipe |
| ureters | tubes that connect the kidneys to the bladder |
| urine | watery fluid produced by the kidneys |
| jobs of the vein | returns blood to the heart, contracts to push blood along, valves prevent blood from flowing backwards |
| villi | tiny finger-like structures that absorb nutrients |
| voluntary muscles | muscles a person can control |
| water | nutrient that makes up 65% of the body's weight |
| white blood cells | fight infection |
