In veins, valves are present to check backward flow of blood flowing at (a) atmospheric pressure (b) high pressure (c) low pressure (d) all of these.

In veins, valves are present to check backward flow
of blood flowing at
(a) atmospheric pressure
(b) high pressure
(c) low pressure
(d) all of these.
by

1 Answer

Answer :

(c) low pressure
by

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