In order for the muscles in the body to function properly, blood is needed. The heart pumps blood to all the important areas throughout the body through an artery known as the aorta (which is the main artery which leads from the body). A thick layer of muscle called the septum which separates both sides of the heart. The deoxygenated blood exits through the right ventricle of the heart
TASK 3.1 Write a report comparing and contrasting the structure and function of the three types of blood vessels. The Structure and Functions of Blood Vessels ARTERIES The walls of arteries contain smooth muscle fibre that contract and relax under the instructions of the sympathetic nervous system. The functions of the arteries are: transport blood away from the heart and transport oxygenated blood only. Arteries have four different parts, which are; lumen, endothelium, smooth muscle and connective tissue. LUMEN=the lumen of arteries is relatively narrow to maintain high blood pressure.
The function of the atrioventricular valves is to make the blood can only flow from the atrium to the ventricle. 12. The walls of the heart The walls of the heart are part of the outer lining of the heart. Heart wall consists of three layers, namely endokardium (deepest), myocardium (middle part), and epikardium (outermost). Endokardium flat epithelium consists of an.
Blood is a connective tissue with many functions. First, blood is a transport medium that allows substances like oxygen, nutrients, hormones, carbon dioxide, and waste products to flow throughout the body. Second, it is a regulatory tissue that monitors the blood’s delicate pH and temperature. The pH of blood is extremely vital to life. Although its range is only from 7.35 – 7.45, it is the only range through which chemical reactions in the body can occur.
Ancestors in Our Genome, addresses the continuingly advancing disagreement upon whom our closest ancestor is within the great apes, described as the hominoid trichotomy debate. The author, Eugene E. Harris examines many different sources of evidence within the book, and with the help of improvements in biological and DNA technology he helps discover who our closest ancestors were. Also when we were first separated from them and how the separation took place. Although there have been many recent advances in technology, a large number of unanswered questions are still a mystery within our genome and evolution from the great apes. Chapter one discusses the debate of morphology - studying fossil evidence of the great apes - versus molecular
In the Inca Empire trepanation was performed quite frequently. Autopsies show that this procedure was performed on healthy victims for certain rituals. The Inca Empire had a high survival rate, almost 100%. In Europe it was sometimes done as a post-mortem burial rituals. During the 19th century, in the United States, ancient trepanation became a main point in the focus of archaeologists.
1. Explain the function of the heart, and the structure of the arteries veins and capillaries The heart is a key muscular organ, and is controlled by the autonomic nervous system. It transports blood to the body’s tissues via the circulatory system; blood provides the body with oxygen, nutrients and also assists in the removal of carbon dioxide and metabolic wastes, hormones are transported throughout the body by plasma. Arteries, arterioles, veins, capillaries and valves, are the blood vessels which are responsible for transporting the blood throughout the body. The arteries are thick walled muscular and elastic, three layered hollow tubes the thickness is needed to cope better with the pressure of blood flowing through the lumen of
Felicia M. Salgado Mr. Belmont College Composition 2 8 March 2017 Argumentative A Thoracic Aortic Dissection Repair is More Complicated and Risky than a Heart Transplant Many people believe that a heart transplant is more complicated and risky than most surgeries because it involves removing the diseased heart and replacing it with a healthy heart. Although this surgical procedure is very difficult compared to most surgeries, a thoracic aortic dissection repair is more risky, complicated, and challenging. A thoracic aortic dissection is a serious condition in which the inner layer of the aorta, the large blood vessel branching off the heart, tears. Blood surges through the tear, causing the inner and middle layers of the aorta to separate
The left coronary artery is significantly larger and supplies the left heart. The left subclavian artery branches directly from the aorta, the largest artery in the body. The aorta curves above the heart before running down the front of the backbone. “The brachiocephalic artery, also known as the brachiocephalic trunk or innominate artery, is much shorter than the aortic arch and splits into two to form the right subclavian artery and the right common carotid
The atria are small, thin walled chamber presents anterior to the base of each ventricle. (37) Unlike the human heart where four pulmonary veins open into the left atrium to drain oxygenated blood from the lungs, in the mouse heart, the pulmonary veins form a pulmonary confluence and open into the left atrium by a solitary
The most important intracellular buffer systems are phosphate and protein. The most important plasma buffer systems are carbonic acid-bicarbonate and the protein hemoglobin. The carbon acid-bicarbonate buffer is a major extracellular buffer and operates within the lungs and the kidneys. To decrease the amount of carbonic acid the lungs function to remove carbon dioxide and leave water remaining. In turn, the kidneys use the carbon dioxide and water to create or absorb bicarbonate.
Xenotransplantation has both positive and negative consequences, which has raised a heated debate among people. For the past decade, many laboratories have undergone various kinds of research in xenotransplantation. In Particular Mayo clinic laboratory conducts Theresearch about Xenotransplantation and Gene therapy (Christopher G. Mcgregor Overview Xenotransplantation-Gene therapy). The main intent of this paper is to discuss the dilemma that has surrounded the issue of xenotransplantation and also to view the
Some symptoms of autosomal dominant PKD are; UTIs, blood in the urine, abnormal heart valves, high blood pressure, and kidney stones. In order to diagnose autosomal dominant PKD a doctor will typically observe three or more cysts on the kidneys using an ultrasound image. The diagnosis can be strengthened the presence of cysts in other organs and a family history of the disease. Due to its slow nature diagnosis with imaging technology isn’t possible until the cysts have formed on the kidneys. In the future, DNA tests will be able to confirm a diagnosis of autosomal dominant PKD before any cysts
The kidneys have numerous functions; they filter blood plasma, excrete toxic wastes, regulate blood volume and pressure, detoxifying free radicals, and the list goes on (Saladin 890). For Naeff, the kidneys are going to be enlarged so that the kidneys have more area to filter the water Naeff may drink and rid of the salts in it. Another important function of the kidneys that aids in the quality of life that Naeff experiences is that they secrete erythropoietin; this stimulates the production of red blood cells which supports the oxygen-carrying capacity of blood (Saladin 890). This is important because of Mars’ carbon dioxide atmosphere; Naeff needs as much oxygen-carrying capacity as possible because oxygen is what keeps him
A handful of thoughts can run through your head when you think about dying in general. Dictionary.com states aging as, "the process of growing old or maturing." Growing old can be scary said by many, but although that 's the case it has to happen sometime. The thought and reasoning by Morley Safer can change ones mind. "The Quest for Immortality" reads, " How would you like to live say, 400 or 500 years, or even more and all of them in perfect health?