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Chapter 6

Across
Blood vessels that transport blood away from the heart.
The smallest vessels transporting blood from the heart to the tissues and the actual sites of exchange between blood and tissue.
The iron-containing pigment in red blood cells that binds oxygen.
The constriction or narrowing of blood vessels.
A double-layered outer covering of the heart.
Blood vessels that transport blood back to the heart.
Down
A resting heart rate that is lower than 60 beats/minute.
Small vessels that transport blood from the capillaries to the veins and then back to the heart.
A condition that involves changes in the lining of the arteries and plaque accumulation, leading to progressive narrowing of the arteries.
The muscle of the heart.
A resting heart rate greater than 100 beats/minute.