Question

what is a role of septum in heart ? why does heart make lub-dub sounds​

Answer 1

Answer:

They open to allow blood to flow through to the next chamber or to one of the arteries, and then they shut to keep blood from flowing backward. When the heart's valves open and close, they make a "lub-DUB" sound that a doctor can hear using a stethoscope.

Explanation:

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Answer 2

➜ANSWER ➜

They open to allow blood to flow through to the next chamber or to one of the arteries, and then they shut to keep blood from flowing backward. When the heart's valves open and close, they make a "lub-DUB" sound that a doctor can hear using a stethoscope.