A part of the heart that pumps all of the essential blood and nutrients to the body.
Controls the flow of blood between the right atrium and right ventricle.
Originally had two chambers but evolved into a more complex 4 chambered system.
Travel in a single file line inside the capillaries.
A circuit in which blood is pumped to the lungs to remove carbon dioxide and intake oxygen.
The largest artery in the human circulatory system, starts at the heart.
The only exception to carbon dioxide not being carried in the veins is because they are located on this organ.
Veins have a much bigger _____ because their smooth muscle tissue isn’t as large.
The system that involves arteries, veins, capillaries and venules.
White and red blood cells originate here.
When multiple of these bond they create a venule.
Red blood cells lack this cellular component however, white blood cells still contain this in their cell.
90% of this substance is water.
To prevent back flow in veins and in between the atrium and ventricle the circulatory system has these?
The smallest arteries in the human circulatory system. Controlled by nervous system.
Verticales
Attack any foreign bacteria or diseases that enter the body.
The shape of red blood cells are said to be this.
Located in the top right corner of the heart.
A layer of plaque forming on the inside of an artery that can block blood flow.
Stops external bleeding so you don’t bleed to death.
Arteries have this many layers of tissue surrounding the blood.
A circuit that delivers oxygen and nutrients to the organs and tissues in order to function.
This deadly gas cannot is unrecognizable while preforming a cell count.
Another name for red blood cells.
Where oxygenated blood first enters the heart.
The small muscular space between the two ventricles is called the what?
Carries blood and nutrients all throughout the body tissues.
Veins are up of several of these merging together.
The enlargement of an artery caused by the weakening of the one of the three artery wall layers.
A heart condition that can be treated with something such as open heart surgery.
Skeletal muscle contractions squeeze these to control blood flow.
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It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
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