Branching from the aortic arch is a large artery that supplies blood to the upper body. Exercise 1: Microscopic Anatomy of Cardiac Muscle Observations Sketch and label your slide in the space provided. I was able to identify all of the. A balance, ruler, probes, a scalpel, a paper towel, flags, a microscope, a slide, and a cover slip. It should be similar to your right but there can be differences like if damage was done to one side or if one side was mutated and disfigured. One of these was that the left ventricle wall was thicker then the right ventricles.
The double-loop circulation is similar to amphibians and reptiles, but the oxygen-rich blood is completely separated from oxygen-poor blood. An in-depth investigation into how the heart works. Blood flow through the heart starts when the right atrium takes the blood that flows in through the superior or inferior vena cava. Remove the lower-front portion of the wall. Most of the myocardium is located in the lower two chambers of the heart called ventricles. Cadaver of a White rat, preserved in chloroform. Heart Dissection Introduction Mammals have four-chambered hearts and double circulation.
As endotherms, which use heat released from metabolism to warm the body, mammals require more oxygen per gram of body weight than other vertebrates of equal size. What is focused about the adaptation between the movie and the book, is that the central character, Babe, is involved with conflict of not only its kind, but with human beings. Insert your probe into this; it should also lead into the right atrium. These form the aortic semilunar valve which prevents blood from flowing back into the left ventricle. The first one was to be parallel to the right ventricle. Click for full-size pdf A little down and to the left of the superior vena cava there is another blood vessel opening.
These include sweaty palms, increased heart rate, and dryness of mouth, among others. Located below the pericardium is the muscle of your heart called the myocardium. Confirm this by squeezing each half of the heart. The right atrium then fills with blood and the pressure of the blood causes the tricuspid valve to open. Turn the heart so that the right side is on your right, as if it were in your body.
If so, what were they? The half that includes all of the apex pointed end of the heart is the left side. What are intercalated discs and what do they do? Cardiovascular System: The Heart Laszlo Vass, Ed. I used a dissecting tray, biohazard bag, a probe, forceps, scissors, and a scalpel. Right Ventricle The bottom picture is an anatomical view from the posterior half of the heart. Look closely and on one side you will see a diagonal line of blood vessels that divide the heart. This is the superior vena cava. This assignment will also describe what I did, saw and felt during my participation.
With tweezers, carefully lift the resulting flap to expose the structures underneath. Purpose Explain why you did this exercise. If you place a probe in the aorta, into what chamber will it exit? It will explain the internal and external heart structure and detail the structure of blood vessels in relation to their function. When the heart begins to contract systole phase , ventricular pressure increases until it is greater than the pressure in the atrium causing the tricuspid to snap closed. Pulmonary circulation begins in the right ventricle and ends in the left atrium. See attached picture labeled cardiac muscle Questions A. Neither you, nor the coeditors you shared it with will be able to recover it again.
Include a description of the structures you observed on the slide. Materials Materials used in this dissection were: 1. The left hemisphere is known to play the dominant role, which is in control of all complex behavioural and cognitive processes as for the right hemisphere it only plays a minor role. Next was to place the sheep heart on the dissection tray. Appropriate work space was also required.
These sequences ensure the blood flow through the heart. Insert a probe into the aorta and observe where it connects to the left ventricle. Examine the flaps of darker tissue on the top of the heart. Sheep Heart Dissection Purpose: Sheep have a four-chambered heart, just like humans. Many female snakes 15 of 20 snakes , but few male… The Sheep Pig — By Dick Smith The idea and concept behind the Sheep Pig is about an unwanted pig who is adopted into a farming family, with dogs and other animals soon to become its friends. These arteries lead to the lungs where blood is then oxygenated.
If so, what were they? Complete the cut on line 3. Start to cut on line 4 at the top of the left atrium and continue into the left ventricle. These form the pulmonary semilunar valve which prevents blood from flowing back into the right ventricle. Locate the coronary arteries and veins that are on the surface of the heart. With the heart on the ventral side facing you and the apex pointing downwards, cut along line 1.