Path Of Blood Through The Heart Flashcards
Learn the blood flow from the blood through the heart from the right and left side
How does blood flow through the right side of the heart?
- The superior vena cava,inferior vena cava and cororany sinus deposites deoxygenated blood into right atrium
- the tricuspid valve separates right atrium form right ventricle and prevents blood from flowing backwards when ventricle walls contract.
- deoxygenated blood is pumped through pulmonary semi lunar valve,out to the lungs to be oxygenated
What is the only atery that Carrie’s deoxygenated blood?
Pulmonary semi lunar valve
Explain the process of blood flow through the left side of the heart
- The left atrium receives oxygenated blood from 4 pulmonary veins returning from lungs
- mitral valve separates left atrium form ventricle
- chordae tendineae fasten cusps to heart muscles
- ventricle has a extra thick muscular wall that pumps oxygenated blood via aorta through aortic valve to the rest of the body
What is the only vein in the body that Carrie’s oxygenated blood
The left atrium
What is the largest vessel in the body?
The aorta
What causes the lub sound when a heart beats
Caused by blood hitting cupisid valves and closing when ventricles contract
What causes the dub sound when a heart beats
Caused by blood hitting semi lunar valves when they close at the base of the aorta and pulmonary artery
What are the abnormal heart sounds caused by damaged valves called
Murmurs
What is the average heart rate of a resting person
About 70 times per minute at rest
How long does each heat beat take
0.8 seconds
How much blood is forced out of the heart in the 0.8 sec
70ml
What happens when a heart beats
It contracts then relaxes
What happens during a systole
Blood is forced in one direction followed by a relaxation of heart muscles
What happens during a diastole
Blood fills chambers of heart
