Artery

To help diagnose macular degeneration, an ophthalmologist or optometrist will perform a comprehensive eye examination that may include the following tests. First and foremost, the doctor will use a special instrument to examine the back of your eye byputting drops in your eyes to dilate them. He or she will look for a mottled appearance consistsyellow deposits that caused by drusenthat form under the retina. People with macular degeneration often have many drusen which are made up of lipids, a…

Rheumatic heart disease is when the heart is damaged. It’s often damage to the valves of the heart. Rheumatic heart disease is a result of having rheumatic fever. It’s commonly seen in children in many developing countries around the world. To begin with, Rheumatic fever causes a person to have rheumatic heart disease. Rheumatic fever affects the connective tissues of the body, mostly the connective tissues of the heart, brain and the joints of the body. Rheumatic fever is associated with having…

I am going to be doing Long QT Syndrome because it is something I can relate to in real life. Long QT syndrome is a disorder of your heart and affects electrical activity. The symptoms of Long QT are dizziness, unexplained fainting, feeling faint, and black outs WIth a bad enough symptom and no treatment then it can cause uncontrollable arrhythmias and maybe even death. A fun fact is that I actually have long QT Syndrome. So every year I go to the cardiologist to get a heart monitor. I also…

Mitral Valve Prolapse is a very common heart condition; with one in four people having it with a lot of them not even knowing they have it. Mitral Valve Prolapse is the improper closure of the valve in the heart between the upper and lower chambers. The mitral valve in the heart consists of two flaps and when they do not close properly, it causes the prolapse. It can cause extra blood to leak into the heart. Mitral Valve Prolapse consists of two forms, classic and non-classic. Classic is when…

Heart rate variability is the normal beat-to-beat alterations of heart rate and reflects the ANS’s ability to respond to the environment (McMillan, 2002). Heart rate variability measurements were obtained from 24-hour Holter electrocardiogram recordings and derive from the analysis of consecutive R-R intervals (Gang & Malik, 2003). The predominant method for analysis of HRV is time and frequency domain analysis, and these measurements also provide information about ANS activity (Gang &…

Orthostatic Hypotension has several key factors that help contribute to the cause of this condition. This condition usually occurs when something disrupts the body's normal course of counteracting low blood pressure. This condition is common in people over the age of 65. Dehydration causes orthostatic hypotension by your body losing blood volume. Some heart conditions such as bradycardia, heart valve problems, heart attack, and heart failure can cause this condition by preventing the body from…

The purpose of this experiment was to understand osmosis, however, the deeper importance was that it could be compared to a real cell in our body. The egg in this lab can represent a red blood cell. When cells such as red blood cells are placed in pure water, water enters them through osmosis and they swell up. If this continues for a long period of time, they have a great chance of bursting. On the other hand, when cells are placed in a lower concentrated solution, water leaves them through…

internal jugular veins as well. As the external jugular veins descend through the lateral neck, they pass obliquely over the sternocleidomastoid muscles and then empty into the subclavian veins. The brachiocephalic vein a vein that returns oxygen-depleted blood from the upper limbs, neck, and head to the heart. There is a brachiocephalic vein on the left side of the neck and one on the right. The two brachiocephalic veins merge together with the azygos vein, which carries deoxygenated blood from…

Physiology What conditions contribute to turbulent blood flow or heart murmurs. Turbulent blood flow occurs as blood moves through narrowed or leaking valves producing a swooshing sound over the precordium and a high heart rate combine with narrowing, causing the heart to handle a larger amount of blood flow than normal; the basis is increased blood velocity, structural valve malfunction, or atypical chambers. Some pathological causes of heart murmurs are anemia, high blood pressure,…

Doctors currently know why people can die from a broken heart. Rob Stein from The Washington Post reported that researchers have revealed that trauma “Can unleash a flood of stress hormones that can stun the heart causing sudden life threatening heart spasms in otherwise healthy people” (Study Suggests You Can Die of a Broken Heart 1). Rob Stein proclaims that stress hormones can alarm the heart, putting people’s lives at risk. According to Stein, the rush of stress hormones to the heart is…