1.3 structure of the heart

Question 1

Double circulatory system

Answer 1

1) blood enters the heart twice for every beat
2) blood is pumped ton two different locations - body and lungs
3) contains left and right side that has oxygenated blind and deoxygenated blood

Question 2

what is your heart made of?

Answer 2

cardiac muscles that contact and relax without receiving signals from nerves

Question 3

myogenic

Answer 3

this means that control rhythm of the heart originates within the heart itself.

Question 4

values

Answer 4

prevent backward of blood and care located at two ventricles.

Question 5

2 types of values:

Answer 5

1) Atrioventricular ( between the atria and ventricle)
- Tricuspid (left) and Bicuspid (right) = stop blood flowing into atrium
2) Semi-lunar valves = stop blood flow back into ventricle