Question

Name the following:
1.The bloods vessels from the heart that have valves.________
2. The events during one Heartbeat
3. The valve that guards the opening of right atrium into ventricle.____________
4. The scientist who discovered circulation of blood.________
5. The circulation between lungs and heart.____________​

Answer 1

Answer:

1 ) Veins

2) As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract. This contraction pushes blood through the tricuspid and mitral valves into the resting lower chambers (the right and left ventricles).

3 )Pulmonary valve

4 ) William Harvey

5) Pulmonary circulation moves blood between the heart and the lungs.

Explanation:

PLEASE MARK AS BRAINLIEST

Answer 2

Answer:

Name the following

1) Veins

2) The cardiac cycle

3) Pulmonary valve

4) William Harvey

5) Pulmonary Artery