Blood entering the heart flows into this.
The Right Atrium
From the right atrium, the blood passes through a valve known as the:
The blood flows throught the tricuspid valve into the:
From the right ventricle, the blood passes through the:
Pulmonary Semilunar Valve
After passing through the pulmonary semilunar valve, the blood enters the:
The pulmonary artery carries blood to the:
In the lungs, the pulmonary arter subdivides into many tiny branches called:
The capillaries in the lungs are in direct contact with many tiny air sacs called:
As the air flows around the alveoli, it picks up ___1___ and at the same time, gives off ___ 2____.
- Carbon Dioxide
The blood flows through the capillaries, around the alveoli, and then enters the:
The pulmonary veins then carry the blood away from the:
The pulmonary artery carries blood to the _____.
The pulmonary veins carry blood _____ ___the lungs.
The pulmonary veins carry the blood to the:
Left Atrium of The Heart
From the left atrium, the blood passes through the:
Bicuspid Valve (Mitral Valve)
From the lungs, the blood flows through the pulmonary veins to the left atrium. Then it flows through the bicuspid valve into the:
From the left ventricle, the blood passes through another set of:
Semilunar Valves (Aortic)
From the aortic semilunar valves, the blood flows into the main artery:
From the aorta, the blood goes to all parts of the body, eventually flowing into the ___ ____ from which it enters the right atrium to being the cycle again.