Heart Muscle Essay

Submitted By cwarren2960

Words: 305

Pages: 2

Open Document

The Heart muscle

This article is about the heart and how it works in the body. Every heart is made up of three layers. An inner lining called the endocardium, a middle layer of muscle called the myocardium, an outer fluid-filled sac known as the pericardium. The heart is divided into four chambers each of the chambers has valves. The valves have different names. The tricuspid valve is at the exit of the right atrium, mitral valve is for the left atrium pulmonary valve is at the exit of the right ventricle the aortic valve is at the exit of the left ventricle. Their purpose is to allow blood to move forwards through the heart and to prevent it flowing backwards into the previous chamber.
The heart muscle contracts in two stages to squeeze blood out of the heart. The blood is pumped from the right atrium down into the right ventricle and from the left atrium down into the left ventricle. In the second stage, the lower chambers contract to push this blood out of the heart to either the body via your main artery (aorta) or to the lungs to pick up oxygen.

| On the right side, the upper chamber fills with oxygen-depleted blood from your body and pushes it via the lower chamber and the pulmonary artery back to the lungs. Here blood picks up oxygen and releases carbon dioxide. On the left side, the upper chamber fills with oxygen-rich blood from the lungs. This is pumped via the lower chamber into the aorta and out to the body to provide cells with the crucial oxygen

The Heart In Mr. Boone's Heart

The Heart:For Mr.Boone’s heart I drew the outline of a heart with an inscription of Christopher in it. Then I placed it sort of orbiting Mr.Boone. This resembles how much he loves Christopher but also shows how their relationship progressed and regressed throughout the book. The Backbone:Much like his heart Mr.Boone’s backbone is Christopher. Christopher really motivates Ed everyday, everything he does is for Christopher.When he gets home from work he asks christopher what he wants to eat and what…

Words 655 - Pages 3

Student: Heart and Heart Transplants Essay

Heart Transplant or Total Artificial Heart Lacey Clement Western Governors University Cardiovascular diseases are responsible for roughly 600,000 deaths each year, making heart disease the leading cause of death in the United States (Centers for Disease Control and Prevention, 2012). There are many types of heart conditions and diseases that have required medical professionals to develop and trial new procedures, devices, and forms of treatment. This presentation focuses on two surgical procedures…

Words 1629 - Pages 7

Heart Rests On The Superior Surface Of The Heart

692 Review Questions 10-20 10. The heart rests on the superior surface of the diaphragm and lies anterior to the vertebral column. It is posterior to the sternum with the lungs flanking it on either side. Roughly two-thirds of its mass lies to the left of the midsternal line. It is enclosed within the mediastinum and extends obliquely for 12-14 cm from the second rib to the fifth intercostal space. 11. The pericardium is a double-walled sac that encloses the heart. The fibrous pericardium is the loosely…

Words 775 - Pages 4

Athlete's Heart Vs Sedentary Heart

Athletes Heart and a Sedentary Heart By Nadia Makada VS Contents Introduction, Method & Results……………………. 1 Anatomical Differences between an Athlete’s Heart & Sedentary Heart…………………………………………………………….. 2 Blood Flow through the Heart & Lungs…………. 3 Heart Rate &…

Words 1275 - Pages 6

Langerdorff Heart: Isolated Perfused Heart

LANGENDORFF HEART Introduction Langerdorff heart or also known as isolated perfused heart is an in vitro research that used animals such as rat, guinea pig, rabbit and cat as the subject to examine or study the heart rate and contractile of strength of the heart. In this experiment, the animal’s heart is being removed from its body and transferred to a constant pressure perfusion apparatus. The heart is allow to adjust to the new surrounding or environment for 15 to 30 minutes. Then, several perfusion…

Words 1108 - Pages 5

Importance Of The Heart

Importance Of The Heart Blood delivers oxygen to all the body cells to stay alive. We need healthy living cells. Without oxygen, these cells would die. If the oxygen rich blood doesn´t circulate as it should , we would die. (Ehart, 2005) Functions of The The heart Heart is a muscular organ in the circulatory system that is responsible for pumping blood throughout the blood vessels to our body. (Thibodeau & Patton, 2013) Types Of Blood arterie veins Vessels s Carry blood away from the heart. The aorta…

Words 488 - Pages 2

Essay about Heart and Heart Chambers

term Explanation Urdu 1 Acute heart failure heart failure that develops suddenly (often due to a heart attack). Although it may be severe initially, it may only last for a brief time and improve rapidly. 2. Anaemia A low number of red blood cells or a low amount of haemoglobin in your blood cells, resulting in reduced oxygen delivery to tissues and organs. 3. Angina pain or discomfort in the chest as a result of reduced blood supply to a part of the heart muscle. It is usually caused by…

Words 993 - Pages 4

Heart Of Darkness

I found Heart of Darkness written by Joseph Conrad to be interesting, I neither liked it or disliked it. Though I am perplexed as why Joseph Conrad could not give us more information in regards to the relationship of Marlow and Kurtz, specifically, overall, does Marlow actually respect, fear or admire him? The relationship between Kurtz and Marlow. When Marlow is first introduced to Kurtz there was very little interest in him, “I had plenty of time for meditation and now and then I would give some…

Words 465 - Pages 2

Heart Of Darkness

Charlie Marlow’s adventure down the Congo River to Africa is essentially the entire plot of the Heart of Darkness. Marlow is telling this story on the boat to several other men of his adventure that took months. Charlie Marlow begins telling his story about traveling down the Congo to Africa as a sailor. After one of the company’s captains was killed by the natives, Marlow was hired onto a European trading company. Thus, Marlow began his trip to Africa. At Marlow’s first stop, he learns about the…

Words 491 - Pages 2

Eclipse Of The Heart

The song “Total Eclipse of the Heart,” written by Jim Steinman and performed by Bonnie Tyler, is representative of Juliet’s soliloquy describing her desire for Romeo in Act III, scene II. In the Capulet’s house, Juliet wishes for night to arrive so Romeo may come, all while pondering losing her virginity. As she contemplates, the song would begin, expressing her feelings with Bonnie Tyler singing, “Every now and then I get a little bit lonely / and you’re never coming ‘round /[...]Every now and then…

Words 306 - Pages 2