The aortic valve is the opening between the left ventricle and aorta. It consists of three tightly fitted leaflets that open and close in response to changes in pressure of the heart and is responsible for delivering blood throughout the body [1]. Aortic stenosis is the narrowing of the aortic valve opening [2]. This narrowing restricts blood flow from the left ventricle into the aorta, affects the pressure in the atrium and causes the walls of the left ventricle to thicken in response to the increased
Mechanical heart valves are valves made of man-made materials and therefore can be very are durable. Patients who have mechanical valve replacements are placed on anticoagulants for the rest of their lives because of the tendency for blood to clot on mechanical valves. Biological (tissue) valves are taken from pig, cow, or human donors and therefore patients with these valve replacements do not need to take anticoagulants for the rest of their lives. Biological valves, on the other hand, don't last
The heart has four chambers, left and right atrium, left and right ventricle (Texas Heart Institute, 2015). Each chamber has a specific job and works together to pump blood throughout the entire body. The right atrium receives deoxygenated blood from the inferior and superior vena cava and sends it through the tricuspid valve into the right ventricle which then sends the blood to the lungs via pulmonary artery (Texas Heart Institute, 2015). Once in the lungs, the blood becomes oxygenated, returns
and these are the collecting chambers of the heart. The bottom two chambers are called ventricles, and these are the pumping chambers of the heart. The right side of the heart collects oxygen-poor blood from the body and pumps it to the lungs. The left side of the heart collects oxygen-rich blood from the lungs and pumps it to the body. More specifically, the right atrium collects oxygen-poor blood from the body through two large veins called the superior
Roger Sperry was a psychologist and neuroscientist whose main work focused on the left and right hemispheres of the brain (Hockenbury and Hockenbury 2014). Roger Sperry’s area of research was categorized as neurophysiology. Sperry’s most famous research dealt with split-brain operations where the corpus callosum has been completely severed (Hockenbury and Hockenbury 2014). The corpus callosum consists of a bundle of neurons that are responsible for the communication between the two hemispheres of
displayed as the big total on top of the mountain and the Tiny Tumblers are the two partners that are added to the bottom left and right of the mountain. It visually relates the two partners to the total. Tiny Tumblers represent an imaginative way for students to visualize the addition of numbers. If the total represented on a Math Mountain is 10, 7 Tiny Tumblers might play on the left side of the mountain and 3 play on the right side to show 7 and 3 as partners of 10. Research has shown that students
behind the left side bank. There was nothing that was looking like there was anything that resembled a deer track to a scuf mark on any of the trees near the bank but when I got back
cubbies in my CT 's class are in an L shape against the far left corner. Every morning and afternoon the children and pushing and bumping into each other. By putting them straight and against the left wall gives the children more space to gather or put up their belongings in turn makes it safer. There is a large, clear walkway to the cubbies for the students and plenty of space to line up in front of the classroom door. In the top left corner is the new reading area. It has a bookcase that is easily
Although the radical left should denounce injustice, they tend to forget the historical importance of freedom of speech. It is important to realize that, “abolitionists, labor activists; religious group minorities, communists and socialists, cultural critics, gays, and lesbians…” all were victims of limited free speech.(We Must Help College Students Understand the Importance of Free Speech Pg. 2) Perhaps the lack of historical understanding of free speech from the radical left is fathomable. However
and seats that had been arranged like a typical van itself, also smelling of a type of car fragrance throughout the interior of the taxi car. The long drive from the airport had proven to be worth it, being welcomed by the resort entrance having a left and right lanes of palm trees and various lights decorated all over the lush green foliage, shining as brightly as if the lights were the sun. Within plain sight, there had been a sign above welcoming you to the resort itself, Westgate Resorts. The