Sheep Heart Dissection Worksheet Answers
Sheep heart dissection is a common biology lab activity that allows students to explore the internal structure of the heart and understand its functions. Here are the answers to a typical sheep heart dissection worksheet:
External Anatomy
- What is the outermost layer of the heart called? Answer: Epicardium
- Identify the two main arteries that arise from the heart. Answer: Pulmonary artery and Aorta
- What is the name of the vein that carries oxygenated blood from the lungs to the heart? Answer: Pulmonary vein
Internal Anatomy
- What is the name of the upper chamber of the heart that receives oxygenated blood from the lungs? Answer: Left atrium
- Identify the valve that separates the left atrium from the left ventricle. Answer: Mitral valve (also known as the bicuspid valve)
- What is the name of the lower chamber of the heart that pumps oxygenated blood to the body? Answer: Left ventricle
- Identify the valve that separates the left ventricle from the aorta. Answer: Aortic valve
- What is the name of the chamber that receives deoxygenated blood from the body? Answer: Right atrium
- Identify the valve that separates the right atrium from the right ventricle. Answer: Tricuspid valve
- What is the name of the chamber that pumps deoxygenated blood to the lungs? Answer: Right ventricle
Blood Flow
- Describe the path of oxygenated blood from the lungs to the body. Answer: Pulmonary vein → Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta
- Describe the path of deoxygenated blood from the body to the lungs. Answer: Superior and inferior vena cava → Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery
Additional Questions
- What is the function of the septum in the heart? Answer: To separate the left and right sides of the heart
- What is the name of the muscle layer of the heart? Answer: Myocardium
Notes
📝 Note: Make sure to label all the structures you identify during the dissection, and take notes on their functions.
💡 Note: Pay attention to the differences between the left and right sides of the heart, and how they relate to oxygenation and deoxygenation of the blood.
What is the purpose of the sheep heart dissection lab?
+The purpose of the sheep heart dissection lab is to allow students to explore the internal structure of the heart and understand its functions, as well as to develop their critical thinking and scientific inquiry skills.
What are the main differences between the left and right sides of the heart?
+The left side of the heart deals with oxygenated blood, while the right side deals with deoxygenated blood. The left side is also thicker and more muscular than the right side.
What is the function of the valves in the heart?
+The valves in the heart ensure that blood flows in one direction, preventing backflow and maintaining efficient circulation.
In conclusion, the sheep heart dissection lab provides a unique opportunity for students to explore the internal structure of the heart and understand its functions. By identifying the different structures and understanding their relationships, students can gain a deeper appreciation for the complexity and importance of the heart in the human body.
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