LAST SCIENCE TEST OF 7TH GRADE

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Vein

pumps blood back to the heart

Diaphragm

a sheet of muscles with an important role in breathing

Ventricle

pumps blood from the heart

Atrium

The upp chambers of your heart

Valve

prevents blood from flowing backwards

Artery

transports blood away from the heart

Capillary

transports blood from arteries to veins

Aorta

distributes oxygen rich blood to all the arteries

Coronary Artery

supplies blood to the heart

Plasma

protein containing fluid

Platelet

clear cell fragments that form blood clots

Hemoglobin

a protein that transports oxygen in the blood

Alveoli

tiny air sacs that bring in oxygen for carbon dioxide

Larynx

an organ forming an air passageway and holds the vocal cords

Pharynx

the part that leads from the mouth to the esophagus

Trachea

tube that connects the nose and the mouth

Bronchi

major air passageways

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