Question

3. Diagram given below indicates one phase of heart
contraction
(i) Name the phase and label the guidelines 1-6.
(ii) What does the arrow indicate?
(iii) How many valves are present in the above
diagram? What is the function of the valves?
(iv) Name the valves which are open and which
are closed ?
(v) Write down the difference in composition of
blood in 1 and 2.
(vi)​

Answer 1

there is no diagram attached dear...so i can't answer