pablo42069 pablo42069

02-12-2021
Biology

contestada

What do the vessels that are
carrying oxygen-poor blood
back to heart have that stops
blood from flowing
backwards?
A. thick muscular walls
B. valves
C. hemoglobin
D. SA nodes

Respuesta :

yashjaglan012 yashjaglan012

02-12-2021

Answer:

B ) Valves

Explanation:

Valves allow blood to flow only in one direction and prevent the backflow.

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