Artery walls contain thick layers of muscle to make them strong with elastic fibres to allow them to stretch and spring back.
Las paredes de las arterias contienen gruesas capas de músculo para hacerlas fuertes con fibras elásticas que les permiten estirarse y volver a su forma.
| Text | Artery walls contain thick layers of muscle to make them strong with elastic fibres to allow them to strech and spring back |
|---|---|
| Extra | which all helps cope with high blood pressure >:( |
Tags: b2, bio, blood-vessels
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