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11 Cards in this Set
- Front
- Back
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The involuntary muscles of the arteries are controlled by the __________ system
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nervous
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What happens to the blood which reaches the cells from the capillaries?
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food and O2 pass to cells, CO2 and wastes pass to blood
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A venule is a tiny tube which gathers blood returning from the capillaries.
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true
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Blood moving through veins can only flow in one direction because of the vein's _____.
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valves
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The number of white blood cells decreases when fighting infection.
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false
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The heart is almost all muscle tissue
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true
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The ventricles pump blood into the arteries when the heart contracts.
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true
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The aorta is a vein
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false
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The aorta carries blood to the body
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true
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Blood enters the heart from the arteries.
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false
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The heart valves act like doors.
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true
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