Science test unit 4 lesson 3 Flashcards
just to not fail the test
plasma
liquid part of the blood; also it carries away most of the carbon dioxide.
Red blood cells
produced in bone marrow made mostly of hemoglobin
hemoglobin
a protein that contains iron and binds chemically to oxygen molecules
white blood cells
the body’s disease fighters some recognize disease causing organisms
platelets
cell fragments that help blood clots when blood vessel is cut they collect and stick to the vessel
types of blood
a,ab,b,o
blood a
is anti b
blood b
is anti a
type ab
is usable with any blood type
type O
only usable with its own type
lymphatic system
returns the fluid to the bloodstream the lymphatic system acts something like rain gutters
lymph
consist of water and dissolved materials such as glucose also contains white blood cells has no pump so it moves slowly
lymph nodes
filter lymph trapping bacteria and other disease causing microorganisms in the fluid
what are the two other types of blood
Rh negative and Rh positive
coronary arteries
carry blood to the heart itself
diffusion
molecules move from an area of higher concentration to lower
blood pressure
the force at which ventricles contract
Atherosclerosis
a condition in which an artery wall thickens as a result of the buildup of fatty material
heart attack
occurs when blood flow to part of the heart is blocked causing cells to die
hypertension (silent killer)
is a disease when a persons blood pressure is higher than normal causing the heart to work hard
Circulate
Move in a circle and return to the same point
Transport
To carry something from one place to another
Glucose
Is a sugar that is the major source of energy for the body’s cells
Cardiovascular system
Is made up of the heart blood vessels and blood
