| A | B |
|---|
| Photolysis | The splitting of water molecules during photosynthesis |
| Myofibril | Small contractile muscle part composed of thinck myosin protein filaments and thin actin protein filaments |
| sarcomere | each section of a myofibril in a straited muscle |
| liver | gland that produces many chemiclas, including several needed for digestion, that are delivered to teh small intestine |
| Amylase | digestive enzyme secreted by the salivary glands and pancreas;breaks starches into smaller sugars |
| Trachea | the windpipe;lined with constantly beating cilia that prevent foreign particles from reaching the lungs |
| Reflex | rapid'automatice,unconsicious response to a stimulus |
| Addiction | psychological or physiological drup dependence |
| vaccine | immunity-producing substance fromed from weakeded,dead, or parts of pathogens or antigens |
| bursa | cushioning,fluid-filled sac found between the bones of movable jointsd |
| ligament | stong band of connective tissue that holds joints together and connects bones to other bones |
| epiglottis | flap of skin taht covers teh opening of the windpipe during swallowing |
| rectum | final segment of teh digestive system'passes feces out of the body through the anus |
| artery | elastic, thick-walled vessel that transports blood away from the heart with a steady, pulsating rhythm |
| alveoli | in the lungs; tiny;thin-walled sacs surronded by capillaries: Co2 diffueses from the blood into the alveoli, and oxygen diffuses from the alveoli into the blood |
| platelets | short-lived cell fragemnt contained inteh plasma; needed for blood clotting |
| vein | large blooda vessels taht return bllod from the tissues back to the heart' contain one-way valves to prevent backflow of blood |
| plasma | straw-colored , fluid portion of blood containing for example, blood cells, platelets, hormones,and nutrients |
| cochlea | fluid filled structure int he ear in which sound vibrations are converted into nerve impluses |
| narcotic | pain-reliever that also causes sleep;narcotics are often derived from teh opium poppy |
