Demonstrate the role of stents in Percutaneous Coronary Intervention (coronary angioplasty) Introduction The heart is a pump that circulates blood to the rest of the human body. It is positioned at the centre of the chest, just between the lungs. The network of blood vessels that branch over the surface of the heart are the coronary arteries.…
There are three types of muscles in the human body: cardiac muscle, smooth muscle and skeletal muscle. For the purpose of our lab we will be focusing only on skeletal muscle. Skeletal muscle is the only voluntary muscle tissue found in the human body. They're attached to bones by tendons and are responsible for all the movements that are consciously controlled such as writing, walking, running, etc. [1].…
About the size of a large fist, heart is made up of cardiac muscle, myocardium, with skeletal muscle-like striations. It has two upper atria & two lower ventricles separated vertically by septum, and four main valves with which the blood makes its directional flow into and out of the heart. Deoxygentated blood with which the blood flows into and out of the organ. Deoxygenated blood enters through the venae cava fills the right atrium (RA) and right ventricle (RV) through the tricuspid valve. Then, RV contracts pushing the blood to pulmonary circuit and returns oxygenated from the lungs and travels to left atrium (LA) and left atrium (LA) through the mitral valve.…
Discuss your dissection of the sheep heart and the cardiovascular system of the fetal pig by doing the following: a. Describe the similarities and differences between the fetal pig heart and the sheep…
The cardiac muscle cell consisted of striations and many nuclei. Elodea looked like a green brick wall and consisted of cell walls and many organelles. The Elodea was estimated to to be 160μm, this estimate was 110μm off. The actual size of Elodea is 50μm. The drawing magnification was 250 times and the…
Although human and frog hearts do not look the exact same, they do act very similar. Human hearts have four chambers: two atria and two ventricles. Contrarily, frog hearts have only three chambers: two atria and one ventricle. Frogs are helpful in scientific research of the heart and its many functions because human hearts can obviously not be used. In this case, the frog hearts are helpful in determining the effects of different chemicals on the heart.…
The heart is one of the major organs in the body that is essential. The heart is considered a pump that helps the blood flow, continuously, throughout the body. The heart is located under the rib cage, between the lungs, and more on the left side of the breastbone. It has two major coronary arteries, electrical impulses, four chambers, and four valves to help the blood flow one way. Deoxygenated blood enters the right atrium from the superior and inferior vena cava.…
Skeletal Muscle are tightly bound together in comparison to cardiac muscle and as previously mentioned unlike skeletal muscles there are gap junctions found in cardiac muscles whereas in Skeletal muscle there is only a common contraction known as syncytium and they also do not have any gap junctions. In Cardiac Muscles the mitochondria and endomysium are really dense in cardiac muscles compared to skeletal muscle - moreover the mitochondria in muscle cells have much more blood vessels and because this is the case about 25% of the space/structure is occupied by the mitochondria whereas in comparison to skeletal muscle only about 2% of the space is occupied by the…
Then there is the Cardiac which is only found in the heart, it is responsible for pumping blood through the body. Lastly there is the smooth muscle which is the type of muscle found in our internal organs, blood…
Congestive heart failure October 11, 2008 modified October 27, 2014 Congestive heart failure is the cause of edema. It is a chronic disease of the heart that causes poor blood circulation. Update on congestive heart failure. The heart is a muscle that beats to pump oxygen-rich blood and nutrients to the body via the circulatory system. Inside the heart are four chambers which collect blood and then distribute it to the lungs and the body.…
Skeletal Muscle: Skeletal muscle makes up approximately 40 percent of a humans total body weight, and contains 50-75 percent of all body proteins, accounting for 30-50 percent of whole body protein turnover (Frontera and Ochala 2015). It contributes significantly to multiple bodily functions both mechanically and metabolically. In terms of our study its main function is to convert chemical energy into mechanical energy allowing individuals to generate force and power, and produce repetitive high speed intermittent movements within sports such as Gaelic Football. The architecture of skeletal muscle is characterized by a specific and detailed arrangement of muscle fibres, also known as muscle cells or myofibers.…
The heart is about the size of a fist pushing approximately an average 1,900 gallons of blood per day. The heart is made up of cardiac muscle tissue and has four chambers. There are two atria which are responsible for receiving the deoxygenated blood that is coming back from the veins. The other two chambers are the ventricles, which pump oxygenated blood in the arteries is carried away from heart. Separating the chambers are valves.…
What is it? Cardiomyopathy is a term to describe a disease that affects the muscles of the heart. Cardiomyopathy occurs when the muscles of the heart become stiff and enlarged and it makes it difficult for the heart to pump blood. In response, it may cause heart failure and the weakened heart will be able to pump blood causing blood to flow inadequately into the lungs and other areas of the body.…
In this report i will be talking about The Heart and Heart Disease. I will also tell you the location,size, and position of the heart. The heart is the strongest muscle in your body it doesn't stop pumping. It pumps the blood through the circulatory system by rhythmic contraction and dilation. It vertebrates there may be up to four chambers with two atria and two ventricles.…
The author focuses on the coronary heart disease. His article starts by giving an introduction about the heart’s structure and function. It explains briefly that heart is a muscle as the same size of adult human fist. Its main function is to pump oxygen-rich blood around the body. Circulation process starts when blood leaves the heart by going to the lungs.…