What is the structure of the Cardiovascular System?
The structure of the Cardiovascular System is simple. It is composed up of the heart, blood vessels along with the blood also. The cardiovascular System has a job of delivering nutrients around the body in addition to the removal of waste products like carbon dioxide, lactic acid and urea. The most important part is the heart which is composed of 4 chambers and valves - situated at the center of the Cardiovascular System - this is a major yet important muscle that keeps the body functioning correctly from continuous pumping that the four chambers of the heart do. The top two chambers are known as the Atria which pass blood into the bottom two chambers named the Ventricular via the valves. The Atrium's are slightly smaller than the Ventricles as they do not require a high intensity of pressure; it has a job of feeding the blood down into the Ventricles where when they contract they have to have a strong force of pumping the blood out of the heart into the arteries with greater pressure. The valves have a role to keep the blood flowing in one direction to protect the body from receiving blood clots if it were to flow backwards. The noise "lub/dub" of the heart beating is known for the valves opening and closing during contractions. The arteries are elastic blood vessels that transport blood away from the heart in order for nutrients and oxygenated blood to be received. On the other hand the veins return deoxygenated blood back into the heart. The Cardiovascular System then repeatedly continues this cycle in order for the body to work efficiently.
What is the Cardiovascular System responsible for?
- This system is used for a variety of important reasons. Without the Cardiovascular System our body would be dead. The Cardiovascular System is commonly known for the transportation of the oxygen and nutrients to a variety of areas to the body, along with carrying a number of hormones around the body also. The Cardiovascular System also has a role of removing waste products from the body such as carbon dioxide and lactic acid - poison that builds up during exercise around the muscles. In addition this system is required to regulate the human’s body temperature keeping it at a healthy heat and ensuring to return the temperature back to normal if it is known to be too high or too low. .
Function of the Heart:
- The heart is the most important muscle in the human body. If you close your hand into a fist this is the approximate size of your own heart. The heart is found behind the rib cage which is the protection known for the heart in order to keep it safely working and free from damage. The heart is a cardiac muscle yet known to be a voluntary muscle as it works without prompts and automatically. The heart has a job to pump blood through blood vessels (arteries, capillaries and veins) in order for nutrients and oxygen to be received from a variety of areas in the body along with the disposal of waste products that can cause damage to our body if they were not exhaled continuously.
Structure of the Heart:
- The heart is a essential muscle that is required to pump liquids around the body. It is composed up of thick walls that are important for handling blood force out of the heart at a high intensity allowing the body to receive its needs. The heart is known to be the myocardium and what is known to be divided into 2 separate halves that have completely different roles and importance. The right side of the heart is known to pump deoxygenated blood to the lungs travelling through the heart after going around the body. The left side of the heart is the transportation of oxygenated blood ensuring it travels around the body to all the working muscles allowing us to endure through everyday life activities. Each division of the heart is composed up of chambers whilst being connected and all working together to do one job of transporting oxygen and the removal of waste products. The top two chambers are called the atria - this is where the blood first enters into the heart through the veins in order to be passed into the lower chambers through the valves. The two lower chambers are known the be the ventricles which a large pumps that have a thicker wall for higher intensity jobs. The right ventricle pumps deoxygenated blood to the lungs to receive more oxygen and the left ventricle is much larger as it handles oxygenated blood which will be known to travel around the body at a further distance and is required more force. This is why our left side of the heart is larger than the right side.
FACT: Once the heart has stopped beating the body would have 6 minutes left to remain alive, without treatment.