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Blood: Glossary

A

anemia
the inability for red blood cells to carry enough oxygen to nourish the body
antibodies
proteins in the body used by the immune system to fight foreign substances
antigen
any substance that causes the body to produce antibodies
arteries
blood vessels that carry blood away from the heart

B

bacteria
microscopic life that can cause illness
blood pressure
the force that the blood exerts against the walls of veins and arteries as it moves through them
blood vessels
veins, arteries and capillaries which carry blood through the body
bone marrow
a spongy material in the center of large bones

C

carbon dioxide
a gas that is made by the body as a waste product
circulatory system
the body system that carries oxygenated blood from the lungs, out to all of the cells and back the heart
coagulate
change from a liquid to a gel-like material
compatible
able to work together

D

diastolic
a number that represents the resting blood pressure
donor
a person who gives blood to be transfused

E

erythrocytes
red blood cells

H

hematologist
a scientist who studies blood
hemoglobin
a protein that allows red blood cells to carry oxygen
hemophilia
a disease that causes the blood to not clot
histamine
a protein released by the body in response to antigens
HIV
human immunodeficiency virus - attacks the white blood cells and destroys them
hypertension
high blood pressure
hypotension
low blood pressure

I

immune system
the system of the body that protects it from disease
invertebrate
animals without a backbone

L

leukemia
cancer of the blood
leukocytes
white blood cells

N

neutropenia
an abnormally low number of white blood cells
nutrients
good parts of food

O

oxygen
the gas that our body uses

P

parasite
an organism that lives off of a host animal, causing disease
protein
a combination of amino acids that helps the different cells of the body
pulse
the measure of the heart rate

R

Rh factor
an antigen found on the surface of red blood cells of people who test positive

S

sickle cell anemia
a disease of certain ethnic groups that causes anemia
sphygmomanometer
a tool that measures blood pressure
systolic
the pressure of the blood during heart contractions

T

thrombocytes
platelets
tissue
a collection of cells that perform a job
transfusion
the transfer of blood products from one person to another

V

veins
blood vessels that carry blood to the heart
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