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Science The Body

Quiz (January, Friday 13th)

QuestionAnswer
What three things are carried throughout the body by the cardiovascular system? Need substances,waste products,disease fighting cells.
Each time the heart beats,what does it do to blood? Each time theheart beats,it pushes blood through the blood vessels of the cardiovascular system.
A flap of tissue that prevents blood from flowing backward is a(n) Valve.
The group of cells that adjusts the speed of the heart beat is called the Pacemaker.
When blood flows through the heart,what force pushes the blood out of the heart and into the artieries? The contraction of the ventricles.
Name the three kinds of blood vessels Arteries,capillaries,and veins.
The largest artery in the body is called the Aorta.
Arteries carry blood away from the Heart.
Is the following true or false: The coronary arteries provicde the stomach with its blood supply. False.
True or false? Arteries control the amount of blood that different organs receieve. True.
What important thing happens in the capillaries? Matericals are exchanged between the blood and the body's cell.
One process in which materials are exchanged between the blood and the body cells is Diffusion.
What job do veins carry out? Veins carry blood back to the heart.
True or false? The walls of veins are generally much thinner than those of the arteries True.
What is blood pressure? The pressure that blood exerts against the walls of blood vessels.
As blood moves away from the heart,does the blood pressure increase or decrease? Decrease.
Instrument that measures blood pressure Sphygmomanometer.
Name for liquid part of blood Plasma.
What is plasma mostly made up of? Water (90%)
Three kinds of materials that are carried in plasma Nutrients,chemical messengers and wastes.
What job do red blood cells preform in the body? They pick up oxygen in the lungs and carry it to cells in the body.
What is hemoglobin,and where is it found? An iron-containing protein that binds chemically to oxygen molecules.It is found in red blood cells.
What is the job of white blood cells? They fight diseases.
Lymphatic System- A network of veinlike vessels that return fluid to the bloodstream.
Created by: Avery Lamb
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