The Cardiovascular System Essay

To understand the importance of the blood flow throughout the heart and lungs. The heart is made up of solid muscle, which helps the heart contract and release. The heart has multiple chambers that lead to different arteries and veins throughout the body. The purpose of the heart is to bring oxygen rich blood to all the tissues of the body.

system where the heart is the pump, which pumps the blood, and the blood vessels are

Whist moving and exercising the body desperately needs a lot of oxygenits the hearts job to push all of these rich oxiginated red blood cells around the body but the more vigorous the exercise then the more oxygen needed so the heart has to pump harder and faster other wise oxygen wont be put into the places where its really needed leding to a build up of lactic acid causing the muscles to fatigue if the heart is required to do this often then it will grow stronger and will be able to cope with the intensity. At the start of exercise, the nerves in the brain detect cardiovascular activity. these nerves can then make the heart rate increase by sending out chemical messages, as well as the strength at which the heart

The diagram above shows the external heart. It is shaped in a cone and is made up of the cardiac muscle. Its main function is to pump the blood around the body. There are three different layers. The outer layer is known as the epicardium, it is a thin membrane which helps to protect the outside of the heart. The middle layer is known as the myocardium where the cardiac muscle tissue is contained. Myocardium has the thickness and most mass in the heart, its responsibility is to pump the blood. Lastly, the inner layer is called endocardium, it is thin and a smooth. Its role is to keep the blood sticking of the heart.

Blood contains two main elements which are the fluid that is known as plasma and cells. There are three kinds of cells which are the red blood cells, white blood cells and platelets. In order for doctors to retrieve the information they need from the blood, they do numerous tests with the blood sample. These include measurements of the

The primary functions of the blood is to transport oxygen, CO2, nutrients and wastes. Blood aids in the regulation of temperature. And keeps the acid-base (pH)

The human cardiovascular system, or circulatory system, contains a few essential parts: the heart, blood, and blood vessels. The average adult has about five or six quarts of blood, which makes up approximately 7%-8% of an adult’s total body mass. While the oxygen and nutrients within the blood diffuse out of the blood vessels, the blood never leaves the blood vessels, making it a closed system. After leaving the left ventricle of the heart, by means of the semilunar valve, oxygenated blood enters circulation through the utilization of arteries. The arteries then transport the oxygenated blood, which in turn transports the oxygen and nutrients throughout the body. The oxygen and nutrients diffuse out of the arteries

The Blood= Blood is a fluid that contains red blood cells, white blood cells, platelets and a watery substance called plasma that contains proteins, sugars. fats and minerals. The

Introduction The main types of blood vessels in the systemic system are arteries, arterioles, capillaries, veins and venules. In this experiment, the main blood vessels that were explored in depth were the arteries and the veins. An artery is a muscular or elastic tube that carries oxygenated blood from the heart to the tissues of the body. The only exception to this is the pulmonary, which carries oxygen to the lungs for oxygenation and removal of excess carbon dioxide.

The cardiovascular system is the most important system in our body. This system is what keeps us alive. Beating on average 30 billion times a year, our heart is never able to stop and take a break. With every beat of our heart, the cardiovascular system moves blood, gases, nutrients, and hormones throughout the intricate vasculature of our bodies. An adult body contains over 60,000 miles of vessels, which can wrap around the world two and a half times. The vessel branching off of the heart is largest artery in our body and is known as the aorta. The aorta supplies oxygenated blood to our body. The aorta runs along the midline of our body and has many other vessels that stem from it to deliver the blood to a specific location. The

The cardiovascular is a very imperative system within the body. The cardiovascular system is made up of and contains organs such as the heart which plays an important role within the human body. It also contains blood vessel; veins, capillaries and arteries. All of these have their own functions within the body so they differ. The heart organ is in control of getting blood around the body, it does this by pumping it which then goes through the different blood vessels linked to the heart to the rest of the body. The veins have the job of transporting blood back to the muscular organ (heart) whereas arteries do the opposite as they move blood away to the heart and transport it to the whole of the body.

The Cardiovascular System is one of the most important systems in the body. It's the delivery system for the circulation of blood. And it consists of [heart, which is an anatomical pump of blood] and blood vessel (arteries, veins, and capillaries) which allow blood to flow efficiently and quickly from the heart to the body and back again to the heart. Also, Capillaries carry blood to tissue cells and also are the exchange sites of nutrients, wastes, gases, etc. The size of blood vessels depend on the amount of blood that passes through it.

If there is no decline in peripheral resistance, high intake of dietary Na increases extracellular volume and cardiac output leading to increase in BP. (16). Na-induced hypertension may occur by different impaired physiological mechanisms including renal function, fluid hormone, salt sensitivity, smooth muscle in peripheral vasculature and sympathetic nervous system, as the physiological mechanism of Na-induced increase in BP (17). Although Na+ associated with chloride had different effect, compared to when it is binding to other anion such as bicarbonatebut since 1904, it has been considered as as a major risk for CVD and BP, in the form of NaCl. (18). the sodium chloride might have more important role in

veins to the tissues of the body. These walls do not let out blood but

The heart is in the center of the cardio vascular system and is like any other muscle in body. It is a four chambered organ which purpose is to pump blood throughout the body. The heart is located in between the lungs and behind the left side of the sternum. The pericardium is a sac like membrane that surrounds the heart. The outer layer is surrounding the roots of the major blood vessels of the heart and is attached by the diaphragm and numerous other parts of the body. The two layers of the membrane are not stuck to each other and have a fluid that is separating the two, allowing the heart move every time it beats ([5] McKinley, M. P., O'Loughlin, V. D. 2016). The anatomical features in order for normal function of the heart are as follows: The Right side which receives deoxygenated blood from the body and pumps it to the lungs and the Left side which receives oxygenated blood from the lungs and pumps it to the body. Each side has an atrium and ventricle. Great vessels which are the arteries that are transporting blood away from the heart while the veins transport blood towards the heart. And two valves which are the Atrioventricular valves (AV), which are between the atrium and ventricle and the Semilunar valves (SV) which are between a ventricle and an arterial trunk. The sides of the heart go through two circuits: the pulmonary circulation and the systemic circulation. The heart does not only pump blood to the body but, to itself as well through the