cardio vascular system

Question 1

what is the cardiovascular system controlled by?

Answer 1

2 nodes:
- Sino atrial node, which is located in the left atrium and acts as a natural pacemaker
- arteioventricular node which is in the central area of the heart

Question 2

How did the two notes work to control the heart?

Answer 2

• Sino atrial node, causes atria systole
• The atrioventricular node stops the atria systole and creates a break before passing the electrical signals down the bundle of his to the apex, and then up the ventricles through the Purkinje fibres

Question 3

what is dystole?

Answer 3

when the heart relaxes and blood moves into the atria

Question 4

What is atrial systole?

Answer 4

when the atria contract increasing the pressure and decrease in the volume, so blood moves into the ventricles

Question 5

what is ventricular systole?

Answer 5

When the ventricles tract decreasing the volume on, increasing the pressure of the blood moves into the arteries

Question 6

what is the cardiovascular system made out of?

Answer 6

The heart, blood vessels and blood

Question 7

What is the cardiovascular system?

Answer 7

it is a closed transportation system for delivering nutrients and removing waste

Question 8

what are the two types valves?

Answer 8

• semi lunar valves which are found in the arteries
• artrioventricular valves which are found in the between the ventricles and atrium

Question 9

describe the path of blood through the cardiovascular system:

Answer 9

1. Vena Cava brings blood from the body to the
2. right atrium.
3. Passes through the atrioventricular valve.
4. into the right ventricle.
5. Moves into the pulmonary artery.
6. Through the semi lunar valve.
7. To the lungs.
8. From the lungs moves into the pulmonary vein which brings it back to the heart
9. Enters the left atrium.
10. Through the atrioventricular valve.
11. Into the left ventricle.
12. Moves into the aorta.
13. Through the semi lunar valve.
14. To the body.