Anatomy and Physiology Task 1 Dissection (answers) latest spring .

Describe the similarities and differences between the fetal pig heart and the sheep heart. The similarities of the fetal pig heart and the sheep heart include: a. 2 atria and 2 ventricles b. Same structure for blood flow c. Pale pink/brown color The differences of the fetal pig heart and the sheep heart include: a. The fetal pig heart is smaller than the sheep heart b. The sheep heart’s left ventricular wall is thicker than the fetal pig heart’s Describe the four valves of the heart, including their name, location, and function. Tricuspid Valve a. Location: Between the right atrium and right ventricle b. Function: The 3 valves prevent backflow of blood into the right atrium from the right ventricle Pulmonic Valve: c. Location: Between the right ventricle and pulmonary artery d. Function: Prevents the backflow of blood into the right ventricle and allows blood to leave the heart via the pulmonary artery Mitral Valve: e. Location: Between the left atrium and left ventricle f. Function: The 2 valves prevent the backflow of blood into the left atrium from the left ventricle Aortic Valve: g. Location: Between the left ventricle and the aorta h. Function: To prevent the backflow of blood into the left ventricle and allows blood to leave the heart via the artery Discuss the similarities and differences between the left and right sides of the heart. The similarities between the left and right sides of the heart include: a. Both include an atrium and a ventricle b. Both have 2 valves that prevent the backflow of blood c. Both are the same color and consist of cardiac muscle d. Both are separated by the cardiac septum The differences between the left and right sides of the heart include: a. The left side of the heart wall is thicker than the right b. The right side gets deoxygenated blood from the body and pumps it to the lungs whereas the left side gets oxygenated blood and pumps it to the body c. The left side of the heart has more pressure than the right side so it can get blood to the body