BPK 140 Lecture 6: Kins 140 Lecture 6 Prof Arnold

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rubymosquito170

27 Sep 2011

School

Simon Fraser University

Department

Biomedical Physio & Kines

Course

BPK 140

Professor

Anne- Kristina Arnold

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Document Summary

A slow progressive hardening of the arteries (by lifestyle development) characterized by the build up of plaque on a blood vessel wall. Roughness of cell wall of smooth muscles are: High blood pressure causes stretching causes some breaking of the muscles. When plaque form in the bloodvessls that provide blood to the heart. Cardiac ishemia: no enough blood to heart vessels. Cardiac arrhythmias: firing of the signals to the heart is not normal (abnormal heart rate) Cardiac ischemia-failure of blood supply to the heart. Myocardial infarct (mi) (infarct=an area of tissue death) heart attack . Size of infarct, collateral circulation, weak/strong heart muscle. A tight ache, heavy, squeezing pain, or discomfort in the centre of the chest, which may last 30 minutes or more and is not relieved by rest. Chest pain that radiates to the shoulder, arm, neck, back, or jaw often no symptoms! Half have no symptoms before first heart attack.

Related Questions

An important aspect of this qustion is relatively the need to understand the Cardiovascular System/Circulatory System, in order to answer the question. The main role of the cardiovascular system is to move blood through the body. The composition includes: Heart, capillaries, veins and arteries. The system moves oxygenated blood from the lungs and heart through the whole body via arteries. Blood also travels through the capillaries that are found between the arteries and veins. There are multiple diseases that affect the Cardiovascular System Angina, Arrhythmia, Congenital Heart Disease, Coronary Artery Disease, Myocardial Infarction, CHF, Hypertrophic Cardiomyopathy, Mitral Regurgitation, Mitral Valve Prolapse, Pulmonary Stenosis, etc. In Addition there are Vascular Diseases: Peripheral Artery Disease, Aneurism, Atherosclerosis, Renal Artery Disease, Raynauds Disease, Buergerâs Disease, Peripheral Venous Disease, Stroke, Venous Blood Clots, and Blood Clotting Disorders (American Heart Association, 2015). Multiple treatments exist for each and every one of these diseases, and hopefully more to come. American Heart Association. (2015). What is cardiovascular disease? Retrieved from http://www.heart.org.

rubysardine984

How can you explain thefact that a patient who has cardiac ischemia as indicated by anginapectoris, and who survives a cardiac infarction, may be relieved ofhis pain afterwards?

What are some of thesites of predilection of coronary occlusion?

Given anatherosclerotic obstruction of the left circumflex artery, which ofthe three types just described would be least desirable and why?

jaderhinoceros532

Background:

It is a peculiarity of the cardiac circulation that there are channels thatpass from coronary arterioles, from the capillary bed,and from the cardiac veins directly into the lumen ofthe heart. Irregular thin-walled channelsof larger than capillary size, which are called"myocardial sinusoids," also receive blood from the coronary arterioles or the capillary bed andcommunicate with the smallest cardiac veins that opendirectly into the chambers of the heart, particularly into the atria. It has been assumed that the stream in these veins can be reversedand thus help in nourishing the ischemic myocardium incase of coronary obstruction. Some of theseopenings in the cardiac cavity can be seen with nakedeye by inspection of the endocardial lining. They vary from pinpoint size to almost 1 mm in diameter.

Does the coronaryarterial system enter into communications with other arteries inthe neighborhood and if so, how do these arteries reach theheart?

How important are theyfor the supply of the ischemicmyocardium?

raspberrycicada170

BPK 140 Lecture 6: Kins 140 Lecture 6 Prof Arnold

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