What stops blood from flowing backwards through the heart ?

What prevents blood from flowing in the wrong direction in the heart?

Blood returns from lungs to heart through

In which of the following groups of organisms, blood flows through the heart only once during one cycle of passage through the body?

Which one of the following statements is correct about the human circulatory system? (A) Blood transports only oxygen and not carbon dioxide. (B) Human heart has five chambers. (C) Valves ensure that the blood does not flow backwards. (D) Both oxygen-rich and oxygen-deficient blood gets mixed in the heart.

Which one of the following statements is correct about the human circulatory system? (A) Blood transports only oxygen and not carbon dioxide. (B) Human heart has five chambers. (C) Valves ensure that the blood does not flow backwards. (D) Both oxygen-rich and oxygen-deficient blood gets mixed in the heart.

Single circulation ,i.e, blood flows through the heart only once during one cycle of passage through the body, is exhibited by

Single circulation ,i.e, blood flows through the heart only once during one cycle of passage through the body, is exhibited by

Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by