Right Atrium:
The Right Atrium is larger than the Left Atrium but has thinner walls. The right atrium receives deoxygenated blood from the organs of the blood. The right atrium receives deoxygenated blood from the muscles and the other organs. The right atrium contains Pulmonary Artery and Venae carvae which carry the blood the contain Pulmonary valve and there is the tricuspid valve.. The Pulmonary Artery carries deoxygenated blood in the right atrium. The valves in the atriums and arteries stop blood flowing back on its self.
Right Ventricle:
The Right Ventricle receives blood from the Right Atrium. It pumps the deoxygenated blood to the lungs. When the Heart contract the blood is forced out through the Pulmonary Semi lunar Valve into the Pulmonary Artery. The Pulmonary Semi lunar Valve is a three-flap valve that stops the backflow of blood. The walls of the Right Ventricle are a little thicker than the Right Atrium.
Left Atrium:
The Left Atrium receives blood from the Pulmonary Veins. This blood is now oxygenated because it has entered the lungs and now entering the heart.
Left Ventricle:
The chamber of the Left Ventricle has walls that are three times the thickness of the Right Ventricle. This is important because the oxygenated blood that it receives from the Left Atrium has to be pump throughout the body. The Bicuspid Valve closes and the blood is collected in the Left Ventricle. The closing of the Bicuspid Valve stops the backflow of blood. When the Heart muscle contracts the blood is forced through the Aortic Semi lunar Valve, which has the same features as the Pulmonary Valve. The blood then passes through the Aortic Semi lunar Valve into the Aorta.
Aorta:
The Aorta is the largest blood vessel in the body. The inner diameter of the Aorta is about 1 inch. The Aorta carries oxygenated blood to every other part of the body. The Aorta receives its blood from the Left Ventricle. It needs to be big so that it can give the amount of pressure to push the blood around the body and to the brain.
Superior Vena Cava:
The importance of the Superior Vena Cava is to return blood back to the Right Atrium from the upper part of the body. It is one of the largest veins in the body.
Inferior Vena Cava:
The Inferior Vena Cava is important for carrying the blood back to the Right Atrium from the lower part of the body.
Pulmonary Arteries:
The Pulmonary Arteries carry the blood from the Right Ventricle to both of the lungs. There the blood is oxygenated and sent to the Left Atrium in the heart. This is the only Artery that pumps deoxygenated blood to any place in the body.
Pulmonary Veins:
The Pulmonary Vein carries the oxygenated blood back to the Left Atrium in the heart. This is the only vein that carries oxygenated blood to any place in the body.
Respiratory System
This system links up with cardiovascular system by the fact that cardiovascular system takes blood around the body and respiratory system is the oxygen that the blood travels with the blood or carbon dioxide. Oxygen is used to sustain life and to enable us to move and function.
We need to breathe because all the cells in your body require oxygen. Without it, they couldn't move, build, reproduce, and turn food into energy in other words we would even exist. How do you get oxygen? From breathing in air which your blood circulates to all parts of the body.
We breathe with the help of your diaphragm and other muscles in your chest and abdomen. These muscles literally change the space and pressure inside your body to accommodate breathing. When your diaphragm pulls down, it not only leaves more space for the lungs to expand but also lowers the internal air pressure. Outside, where the air pressure is greater, you suck in air in an inhale. The air then expands your lungs like a pair of balloons. When your diaphragm relaxes, the cavity inside your body gets smaller again. Your muscles squeeze your rib cage and your lungs begin to collapse as the air is pushed up and out your body in an exhale.
The carbon dioxide goes through the lungs, back up your windpipe and out with every exhale. It's a remarkable feat, this chemical exchange and breathing in and out. You don't have to tell your lungs to keep working. Your brain does it automatically for you. If we didn’t exhale we would just explode, as our bodies can’t handle the concentration of different gasses in our bodies.
Pulmonary ventriculation is the term used to describe the process of bringing the surrounding air into the body and exchanging the air it with the air already in the lungs (this is called breathing). The average lung has a volume of 4-61 and weighs approximately 1Kg. Lungs have a very large surface area, which means that if you were to dissect a person’s lungs and spread them out on the ground they would cover60-80m2, which is the equivalent of half a tennis court.
The respiratory system consists of
- Nasal cavity
- Pharynx
- Epiglottis
- Larynx
- Trachea
- Bronchus
- Bronchioles
- Alveoli
Each one of these contributes to the respiratory system to sustain life, as we know it. If one of theses weren’t working or doing its job a good as it could you could die. These are all important in sport, as there is a lot of running about going on in most sports.
- Nasal cavity is where the gasses enter the body and travel down the body.
- The Trachea splits into two tubes called Bronchi one going to each lung.
- The bronchi splint into progressively smaller tubes called Bronchioles.
- Alveoli- air sacs in the lungs in which gaseous exchange takes place.
The air breathed in and out of the body consists mainly on 3 gasses in a health person.
- Oxygen the main sores of how we sustain life it only takes up 21% of the air breathed in and out is 16%.
- Carbon dioxide, which consists of 2-part oxygen, is 0.04% in and 4% out of the body.
- Nitrogen is the highest gas as in there is more of nitrogen takes up the last of the percentages 78% in and out of the body so its not use or at least it re-accumulates in the body to give the same percentage.
