Brochure information Anatomy and physiology of the cardiovascular system Cardiovascular System According to (smith.A2013). The cardiovascular system includes the heart, blood vessels and also blood. Its role is to deliver nutrients and takes away any by-products from a person’s body. The cardiovascular system is the heart and it is a four-chambered pump that carries blood to the arteries these arteries then carries out clean and oxygenated blood to the tissue. The blood Definition According to (dictionary.com 2002).
CIRCULATORY SYSTEM 1. INTRODUCTION The circulatory system is also known as the cardiovascular system. This system is a double circulatory closed system which transports blood via arteries, veins and capillaries to the lungs through the pulmonary circulation and to the rest of the body tissues in the systemic circulation. Since the blood travels to varying distances around the body, the blood vessels have to be adapted to overcome different pressures. The pressure changes in the four chambers on the heart (two atria’s and two ventricles) allow the blood to continuously flow in one direction.
Explain the function of the heart and the structure of arteries, veins and capillaries. Referring to Louise Tucker 5th edition, the heart is an organ that pumps blood through the body via the circulatory system, supplying nutrients and oxygen to the tissues and removing carbon dioxide and other waste products. According to Louise Tucker arteries are thick walled, hollow tubes with a fibrous outer covering, a middle layer of muscle and elastic tissue. The functions of arteries are: • Carry oxygenated blood away from the heart to the rest of the body • Transport nutrients e.g. iron, zinc • Main artery is the aorta Structure: • Lumen, small passage • Thick, muscular and elastic walls Veins have three layered walls, their walls are much thinner,
The myocardium- this contains a strong layer of cardiac muscle which makes the bulk of the heart. It can vary in thickness and it is responsible for the pumping action of the heart 3. The Endocardium - Innermost layer of the heart that is made up of epithelial tissue, it is a smooth lining that keeps blood from sticking to the heart and preventing harmful blood clots from forming. The heart is then divided into four different chambers: Two smaller upper chambers- (i) The right atrium- this is where the superior and inferior vena cava pump deoxygenated blood into the heart from the upper ( superior) and lower (inferior) parts of the body. (ii) The left atrium- where the pulmonary veins bring oxygenated blood from the lungs and the aorta brings oxygenated blood from the heart to the
These chambers are called the left and right atria and the left and right ventricles. The atria receive the blood from the major veins and the ventricles discharge the blood through the heart. The lining of the chamber walls is the myocardium. Each chamber wall is lined with a thin layer of fiborus smooth tissue called endocardium. The covering of around the heart is called the pericardium.
Aorta largest artery in the body, made up of three layers the intima, the media and the adventitia. It takes blood away from the heart to the organs, via the hearts muscular pumping chamber in the left ventricle. This pumps blood into the aorta through the aortic valve.
The human heart pumps blood through the arteries, which connect to smaller arterioles and then smaller capillaries. In this assignment, we will discuss the arterial blood pressure from several aspects, include definition, normal values for blood pressure, the most important factors affecting it, the mechanism involved in arterial blood pressure regulation, and the relevance between the pressure and the eye. Definition of blood pressure, it’s Normal value, and the factors that determine arterial blood pressure under physiologic conditions. Blood pressure refers to the force exerted by the blood against the inner walls of the blood vessels . This pressure produces when the heart contracts during the heartbeat cycle, which forces blood out
Heart is a four-chambered muscular pumping organ that divides into atriums and ventricles that are separated by valves to prevent backflow of blood among the compartments (Smeltzer, Bare, Hinkle, & Cheever, 2010). However, heart undergoes two types of circulatory loops in the transportation of blood which are systemic and pulmonary circulation (Taylor, n.d.). Systemic circulation pumps oxygenated blood from heart into all tissues in the body and return the deoxygenated blood back into the heart via vena cava (Taylor, n.d.). On the other hand, pulmonary circulation responsible in the transportation of deoxygenated blood into the lungs for gaseous exchange that results in the return of oxygenated blood into the heart via pulmonary vein (Taylor, n.d.). Another major component of CVS is blood
The circulatory system dispenses oxygen, carbon dioxide, nutrients, waste products, hormones and heat from the body to the tissues. It consists of the heart and blood vessels. The main function of the circulatory -system is to transport oxygen, hormones, and nutrients. The heart, which is the hardest working organ is located in the body’s thoracic
The primary components are minerals and cells bone while osteoporosis is a serious disease condition. Cardiovascular system function transporting oxygen, nutrients, hormones, electrolytes, and drugs also removing waste products from the body. The primary components are heart, blood vessels, and blood. Worst cardiovascular disease is a leading cause of death. Pulmonary system functions to move air into and out of the lungs and regulation of acid-base balance.