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veins

carry blood without oxygen toward the heart (except one)

arteries

carry blood with oxygen away from the heard (except one)

deoxygenated blood

blood that has little to no oxygen

bronchioles

the branches that carry air from the trachea to the lungs

excretory system

the system that eliminates solid wastes; the urinary system is part of this system

red blood cells

these cells carry oxygen to the other cells in the body (no nucleus)

valves

structures inside theheart and blood vessels that keep blood from flowing backwards

atria (1-atrium)

the two smaller upper chambers of the heart

ventricles (2)

the larger lower chambers of the heart

white blood cells

these blood cells change shape as they do their job and protect your body from germs

capillaries

the smallest blood vessels that contain both carbon dioxide and oxygen

trachea

the tube structure between the larynx and the bronchi (windpipe)

blood

an organ that contains RBC, WBC, platelets, and plasma; part of the circulatory system

larynx

this tube-like structure is between the trachea and esophagus and is responsible for your voice

epiglottis

this structure covers the trachea when you swallow so food does not "go down the wrong pipe"

alveoli

the tiny sac-like structures int he lungs where the gases (carbon dioxide and oxygen) are exchanged; rhymes with ravioli

mucus

the sticky fluid that traps dust, germs, andother particles in the air to protect the respiratory system

digestive system

responsible for breaking down food into nutrients so that the cells can use them

circulatory system

responsible for transporting nutrients, wastes, oxygen and carbon dioxide to and from all cells

respiratory system

responsible for taking in oxygen through the nose and mouth to the trachea to the lungs for use and then removing carbon dioxide; cleans the air you breathe.

urinary system

responsible for getting rid of liquid wastes from the blood

esophagus

ringed muscular tube that carries food from the mouth to the stomach

cilia

hair-like structures that are found in the lungs and trachea to sweep away dirt

villi

these structures are found in the small intestine to increase the surface area for digestion

platelets

blood cells that form clots so one doesn't bleed to death

plasma

the largest part of blood that carries food from the digestive system to cells and carries away wastes

cardiovascular

cardio means heart; vascular means vessels; another term for the circulatory system

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