Biology / Unit 13 Bio 3203 short lesson, about 20 seconds
Artery Structure
Captions available
The idea
An artery carries blood away from the heart through a thick, muscular, elastic wall built to withstand and smooth the pressure surges each heartbeat produces.
In practice
An artery's elastic recoil between beats helps maintain forward flow while the heart briefly relaxes.
Where people slip
"Artery" names a direction of flow, away from the heart — it does not specify what the blood contains.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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