Question

Dear students after watching yesterday's science video answer following questions......
1) Explain systole and diastole.
2) Name the following blood vessels......
a)which collect blood from all body cells
b)which transfer blood from heart to all body cells
c)which transfer blood from heart to lungs
d)which transfer blood from lungs to heart
3) How the back flow of blood from ventricle to auricle is prevented?
4) Which artery carry deoxygenated blood?​

Answer 1

Answer:

1 Diastole and systole are two phases of the cardiac cycle. They occur as the heart beats, pumping blood through a system of blood vessels that carry blood to every part of the body. Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction.

Answer 2

2)a )veins
b)arteries
c)pulmonary artery
d)pulmonary vein
3)by the help of valves
4)pulmonary artery
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