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Circulatory System
Vocabulary
17
Science
7th Grade
03/23/2009

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Term
arteries
Definition
the blood vessels that move blood away from the heart
Term
atriums
Definition
the upper two chambers of the heart
Term
capillaries
Definition
are microscopic blood vessels that connect arteries and veins
Term
coronary circulation
Definition
is the flow of blood to the tissues of the heart
Term
hemoglobin
Definition
a molecule that carries oxygen and carbon dioxide, made of an iron compound that gives blood its red color
Term
hypertension
Definition
high blood pressure
Term
lymphatic system
Definition
collects fluid from body tissue spaces and returns it to the blood through lymph capillaries and large lymph vessels
Term
plasma
Definition
is the liquid part of blood and is made mostly of water
Term
pulmonary circulation
Definition
is the flow of blood through the heart and lungs
Term
systemic circulation
Definition
moves blood to all tissues except the lungs and the heart
Term
veins
Definition
the blood vessels that move blood in the direction of the heart.
Term
ventricles
Definition
the two lower chambers of the heart
Term
valve
Definition
tissue that prevents the blood from flowing backwards
Term
platelets
Definition
are the odd-shaped cell fragments that help clot blood
Term
lymph
Definition
tissue fluid found inside lymphatic capillaries.
Term
anemia
Definition
a condition when you lack red healthy blood cells
Term
leukemia
Definition
a type of condition that affects the bone marrow, a spongy center of the bone that produces blood cells.
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