Sheep Heart Lab

*Both sides of the heart are doing this at the same exact time and contracting/relaxing is what pumps the blood from one place to the other.

In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left

Did you know the your heart is the size of both of your hands clapped together. The heart is a organ that keeps you alive. It is in your chest protected by the rib cage. The purpose of this paper is to summarize information about the heart, explains how it works, and discuss its purpose.

In this lab, the students observed the rate and rhythm and how it fluctuates when an individual is relaxed, in a seated position, and after exercising. The Heart is a hollow muscular organ that is cone shaped and it is located in the mediastinum in between the lungs (The Heart, Slide 3 2016). The heart is separated into two main divisions, the pulmonary circuit and the systemic circuit. The pulmonary circuit helps carry blood to the lungs from the heart for gas exchange and it is located in the right side of the heart. In the pulmonary circuit the heart fills with blood in the right atrium then it passes through the right atrioventricular valve which then leads to the right ventricle. Once it is in the right ventricle, the right ventricle contracts which opens the pulmonary valves. After this blood flows from the pulmonary valve to the pulmonary trunk which then distributes it into the right and left pulmonary arteries that supply the lungs where it deposits oxygenated blood.

The first part of the dissection was a thorough examination of the cardiovascular system. My first task was to explore the areas of the fetal pig heart along with the sheep heart. I found several similarities and differences between the two hearts. I found that the fetal pig heart and the sheep heart did not show any significant differences. However, one difference I noted was that the sheep heart was much larger, making it closer to the size of a human heart compared to the fetal pig heart. Another noticeable difference was that the sheep heart had an excessive amount of fatty tissue surrounding the outer wall of the heart. Fatty tissue could not be seen on the fetal pig heart. I was able to find many similarities between the two animal hearts.

In this experiment, the external and internal structures of a sheep’s heart was examined and identified by dissection. To determine the functionality of a human heart since they are both mammals.

Our demonstration’s final results is the exhibition of a heart model with its anatomy labeled and painted red tubes inserted showing the circulation of blood along with the research to achieve our purpose for this demonstration. The purpose is to explain info on the heart, how the heart functions, what vital role it plays in our body, and clear any misconceptions/answer common questions on the heart. In the demonstration, the first explanation will be to clarify info on the heart using the model. The research for that is the heart is a muscular organ located little to the left of the middle of the chest and it’s about the size of a normal hand fist. The heart has four chambers: the right atrium, right ventricle, the left atrium, and the left

Entering high school as shy and retiring, science became my restorative. I became interested in predicting and creating a hypothesis before even considering the results. What held me fast were the dissection analyses and anatomical interrelationships. As I examined the opened sheep’s heart, deeply considering the function and location of the superior vena cava or the thickness of the pulmonary trunk, I realized my interest had far transcended the assignment.

The fetal pig heart and the sheep heart were very similar in structure. They both consist of two atria and two ventricles. The biggest difference noted between the fetal pig and the sheep hearts were the size. The sheep heart was larger than the pig, although the pig heart seemed to have thicker myocardial muscles.

Cardiac muscle tissue, or myocardium, makes up the major portion of the heart. On the inner lining lies a smooth tissue called the endocardium. The endocardium covers the heart valve and lines the blood vessels provided smooth transit for the flowing blood. The septum, completely separates

The heart is an organ located just behind and slightly to the left of the breastbone, and pumps blood through a network of veins and arteries known as the circulatory system. The right atrium is sent blood from the veins, and delivers it to the right ventricle. It is then pumped to the lungs where it is oxygenated. The left atrium collects the oxygen enriched blood from the lungs and delivers it to the left ventricle, where it is pumped throughout the body, and the ventricle contractions create blood pressure.

The cardiovascular system is a very complex system in that includes not only the main organ the heart, but also the arteries, veins, and capillaries as well, and even the liver. So, one questions a lot of people may ask is how does the heart work in order to keep us alive day in and day out. Well, that answer is quite simple the heart pumps blood through the superior and inferior vena cava and it then pumps to the lungs to pick up oxygen and then back out through the aorta to the rest of the body. However, if someone wants to know the details and complexity of the heart, it would be like this. So there are multiple chambers in the heart. The heart has four chambers an upper right and left that are called atria, while the lower right and

2)- Structure/Anatomy of the Heart: The heart is a muscular pump and consists of four chambers: two superior atria and two inferior ventricles. The atria are the areas of the heart that receive blood that is returning to the heart after being circulated, whereas the ventricles are the chambers that propel blood out of the heart to then be circulated around the body. The heart chambers are further divided by the inter-atrial septum and the inter-ventricular septum (Marieb & Hoehn 2013, p. 662).

Before understanding the physical theories behind the heart, it is useful to understand a little bit about the physiology of the heart. The heart is divided into four chambers: two atria on top and two ventricles on the bottom. The atrium and ventricles are separated by valves and the septum separates the right and left sides of the heart.3 Blood returns to the heart from the body through the veins, enters the right atrium and then flows to the

Heart= The heart is around the size of a persons fist, it is composed of 2 sides and four chambers, the left and right atria and the left and right ventricles. The atria’s are at the top of the heart, they receive blood from various parts of the body. The two ventricles are located on the bottom of the heart and pump blood away from the heart. The right ventricles responsibility is to pump the deoxygenated blood to the lungs, while the left ventricle pumps the oxygenated blood to the rest of the body. Between the chambers there are valves in the heart, the valves control the flow of blood, making sure it flows in one direction.