Examlex
From the start, wealth in Pennsylvania rested on trade with other colonies.
Murmur
A sound, typically an abnormal one, heard in the heartbeat due to turbulent blood flow within the heart.
Capillaries
The smallest blood vessels in the body, connecting arterioles and venules, and facilitating the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and surrounding tissues.
Arterioles
Small branches of arteries that lead into capillaries, controlling blood flow through the regulation of resistance.
Venules
Small vessels that collect blood from the capillaries and join to form veins, playing a role in returning deoxygenated blood back to the heart.
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