White blood cell: large, nucleated blood cells that play a major role in protecting the body from foreign substances and microscopic organisms; make up only one percent of the total volume of the blood. 19. Kidney: organs of the vertebrate urinary system; remove wastes, control sodium levels of the blood, and regulate blood pH levels. 20. Nephron: individual filtering unit of the kidneys.
What does the portal vein drain? It drains blood from the pancreas, spleen and digestive organs and delivers it to the liver. 18. What is the function of the dorsalis pedis artery? It functions to carry oxygenated blood from the dorsal surface of the foot.
False Glucose is one of the major electrolytes in plasma. False Both body water and sodium are lost during excessive sweating. True Facilitated diffusion requires a membrane carrier protein and cellular energy. False Ribosomes consist of three subunits of equal size. False An isotonic solution for human red blood cells is a D. 0.9% saline solution.
Week 2 : Cardiovascular System: The Blood Vessels - Quiz ------------------------------------------------- Top of Form Time Remaining: | | 1. (TCO 1) All deoxygenated blood returning from the systemic circulation flows into the: (Points : 2) | Right Atrium Left Ventricle Left Atrium Right Ventricle | 2. (TCO 1) Intercalated discs: (Points : 2) | initiate the heart beat. anchor the heart in place within the mediastinum. prevent eversion of valves.
e. Determine the direction of blood and lymph movement between arterioles, blood and lymph capillaries, and venules. Blood flows from arteries to capillaries to veins. Fluid that leaks out of the capillaries becomes interstitial fluid and is drained as lymph via the lymphatic circulation. Lymph flows from the interstitial tissue to lymphatic capillaries to larger lymphatic vessels to lymphatic ducts and ultimately into veins. f. Describe the lymphatic system role with regard to lipids and lipid-soluble vitamins.
It is a series of physical reactions that transform liquid blood into a gel that forms a secure patch over the damaged blood vessel. Coagulation has three main stages: Formation of factor x and prothrombinase, Prothrombin is converted to thrombin and finally Fibrinogen is converted to fibrin. The clot is formed by these stages. It is then strengthened by a process called Clot Retraction. This is here platelets in the clot contract pulling on the fibrin strands that they are attached to.
http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs. As the deoxygenated blood continues on its journey through the heart from the right ventricle, it makes its exit by way of the pulmonic valve. This structure is a one-way valve with prevents the flow of blood back into the right ventricle once it leaves the heart. http://www.healthline.com/human-body-maps/pulmonary-valve The mitral valve: This valve is located between the left atrium and the left ventricle. As the now oxygenated blood flows back through the left atrium, it does so under increased pressure.
The wave passes to the atrioventricular node where it is passed down the septum down specialised fibres known as the bundle of His. This occurs after a short delay to allow all the blood to flow from the atria to the ventricles. This wave passes down the bundle of His to the Apex of the heart where the Ventricles contract upward, pumping blood out of the ventricles into the pulmonary artery and aorta through the semilunar valves. Here the blood is then passed round the body where it
This paper aims to describe the pathophysiology of atrial fibrillation and the rationale behind the information included in the patient education tool. Atrial Fibrillation: A Patient Education Guide The heart is a muscle that contains four chambers; the right atrium, left atrium, right ventricle, and left ventricle. Each of these chambers has a purpose. The right ventricle pumps blood to the lungs and the left ventricle pumps blood to the rest of the body. The right atrium receives deoxygenated blood via the superior and inferior vena cava.
They have no nucleus and are one of the three principal domains of living organisms in the universal phylogenetic tree of life. Many scientists believe that the Archaea are the closest modern relatives of Earth's first living cells, called Prokaryote. Any of a group of single-celled prokaryotic organisms that have distinct molecular characteristics separating them from bacteria (the other, more prominent group of prokaryotes) as well as from eukaryotes (organisms, including plants and animals, whose cells contain a defined nucleus). The main characteristic about Archaea is the fact that they survive under extreme conditions and are sometimes called extremophiles. The three main organisms under Archaea are Methanogens, Thermophiles and Halophiles.