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NYSExam Vocab List 6
Human Systems: Digestive & Circulatory
Question | Answer |
---|---|
digestive system | system that breaks down food into soluble nutrients that can be absorbed into the bloodstream |
digestive tract | a tube in which food travels through the body |
accessory organs | produce digestive juices that are released into the digestive tract; pancreas, gallbladder, liver |
physical digestion | food is broken down into smaller pieces by food is broken down by chewing and by the action of the muscles in the digestive tract |
chemical digestion | food is broken down by enzymes and nutrients are released to be used by the cells |
enzymes | chemicals that break down food |
feces | solid waste material |
circulatory system | system responsible for transporting nutrients, water, and oxygen to the cells and carrying away wastes |
blood | liquid tissue containing plasma, red and white blood cells, and platelets |
plasma | liquid part of the blood that carries dissolved nutrients, wastes, and hormones |
red blood cells | contain hemoglobin |
hemoglobin | a chemical pigment that carries the oxygen to the cells |
white blood cells | fight infection |
platelets | cause clotting (stop bleeding) |
blood vessels | a network of tubes through which blood flows |
arteries | carry blood away from the heart |
veins | return blood to the heart |
capillaries | connect arteries and veins; where blood and cells exchange materials |
lymph | watery part of blood that is in the tissue surrounding the capillaries |
lymph vessels | where lymph is collected and returned to the blood vessels |