1. List the structures and functions of the cardiovascular system. Do not forget blood and vessels are part of this system. The cardiovascular consists of the heart, blood vessels and blood. It has three functions one of them is that it transports nutrients, oxygen and hormones to cells throughout the body and removes wastes such as carbon dioxide and nitrogenous waste.
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 heart, blood, and blood vessels all form the circulatory system, also known as the cardiovascular system. As one of the most important systems in the human body, the circulatory system transports oxygen, nutrients, and hormones and removes any waste products. Without the circulatory system, your organs wouldn't be able to function, causing death. With the blood vessels taking blood around the body, the heart pumps all this blood.
Also the lymphatic system stops fluid form building up in the tissues in our body and its acts as a filter for the blood and removes the pathogens and antigens from the blood. Role of the parts: Lymph nodes – Lymph nodes are enclosed, located around the lymph vessels. Lymph nodes are a key organ of the immune system and they make white blood cells which help fight off diseases. They also create antibodies to neutralize infections. They do this by producing lymphocytes protects the body from harmful microorganisms, unknown particles and removes litter from the lymph.
Host defence comprising many biological structures and processes within an organism that protect against various diseases is known as immune system(97). Immune system can be classified broadly in two sub-systems, the innate immune system versus the adaptive immune system, or humoral immunity versus cell mediated immunity. In humans, the blood-brain barrier, blood-cerebrospinal fluid barrier separate peripheral immune system from the neuroimmune system which protects the brain(98). Malfunctioning of immune system can result in autoimmune diseases, inflammatory diseases and cancer.
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.
In a sense, they act as the brain's eyes and ears allowing it to quickly assess metabolic parameters and make necessary adjustments. In humans, two of these sensors are the subfornical organ (SFO) and the vascular organ of the lateral terminalis (OVLT), both located near the hypothalamus. These clusters of neurons contain specialized surface proteins called osmoreceptors capable of sensing changes in the concentration of sodium and chloride ions. If the blood becomes too concentrated, the SFO and OVLT activate hypothalamic neurons, ultimately culminating in the sensation of
When an antigen invades the body, normally only those lymphocytes with receptors that fit the contours of that particular antigen take part in the immune response. When they do, so-called daughter cells are generated that have receptors identical to those found on the original lymphocytes. The result is a family of lymphocytes, called a lymphocyte clone. with identical antigen-specific
The blood seeps in the sinusoids on its way to the hepatic veins, and then to the vena cava. This filtration is ideal for hepatocytes to filter the blood, process and store nutrients, cleanse, and remove debris. 6. Cirrhosis leads to scarring and increased hydrostatic pressure in the hepatic portal vein. Explain why this increased venous pressure causes net filtration to increase in the hepatic capillaries, leading to ascites (swollen and fluid-filled interstitial space of the abdomen).
Unit 5 Anatomy and Physiology for Health and Social Care P4 Explain the physiology of two named body systems in relation to energy metabolism in the body The two body systems selected in relation to energy metabolism in the body are the digestive system and cardiovascular system. The digestive system breaks down foods and the cardiovascular system enables absorption and usage of the food. The term energy metabolism in the body relates to chemical reactions that that maintain cells and organisms. It is divided into two categories: catabolism is the breakdown of molecules to obtain energy and anabolism the synthesis of all compounds needed by the cells.
Halloween, donating blood or suffering from a cut, you probably don't give much thought to blood on a regular basis. This fluid that flows through our bodies, though, is truly a matter of life and death. In honor of American Heart Month, let's learn a little bit more about the blood that our hearts pump through our bodies. Blood is composed of cells and plasma.