Sensory System Career Specialties Answers

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The pulmonary artery is the only artery that contains

oxygen-poor blood.

plasma.

platelets.

white blood cells.

What is the main pump of the circulatory system?

leg muscles

valves

the heart

arterial muscles

What do only veins contain that help with blood flow?

oxygenated blood

capillaries

small valves

muscle

What are the smallest blood vessels in the body called?

capillaries

venules

arterioles

alveoli

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