Question

1The_____of a human is made of
muscles and the contraction and expansion of these muscles supply blood to the whole body.
(lungs, heart, pancreas)
2] The left and the night atria as well as the left and the right_____ are the four parts of the heart.
(Alveoli, ventricles, lungs)
3 The blood flows in one direction due to the_____ in the heart.
(value, vessels).
4 The blood vessels which carry blood from the heart to the various parts of the body are called__________
(capillaries, arteries, veins)
5. The heart of a healthy man beats_____ times a minutes.
(72, 49,68).
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Answer 1

Answer:

1) heart , 2) ventricles, 3)valve,4)arteries, 5) 72