DO NOW Create a Venn Diagram to compare the Respiratory and Circulatory systems. 7 th Grade Science QUIZ-STUDY (5 min) Study the structures and functions of the circulatory and respiratory systems. Be sure to take a look at the steps in which blood circulates to lungs, heart, and cells on the body. 7 th Grade Science QUIZ SWITCH PAPERS WITH SOMEONE NEAR YOU. 7 th Grade Science DO-NOW 7 th Grade Science Pick up a Qwizdom remote and use it to select the words that best complete the statements below. You will use each word once. Answer Choices: a.Oxygenated b.Deoxygenated c.Arteries d.Lung e.Capillaries f.Alveoli Veins return __(1)__ blood back to the heart. The heart then pumps the oxygen poor blood to either the right or left __(2)__. There, the blood picks up oxygen and drops off carbon dioxide at the __(3)__. Next, the __(4)__ blood returns back to the heart. The oxygen rich blood is pumped away from the heart through __(5)__. As it travels, the blood passes through very tiny blood vessels called __(6)__, where it delivers its O 2 load to the cells and picks up their waste, like CO 2. Then it returns back to the heart and the cycle repeats. Todays Schedule 7 th Grade Science 1.Do-Now 2.Heart structure and function 3.Review Dissection Safety 4.Heart Observations Dark Matter Essential Questions How do different body structures function together to sustain life? Homework is due Friday, Dec. 2 nd Observations 7 th Grade Science Written Observations Anterior (front) Side Sketch Anterior (front) Side Written Observations Posterior (Back) Side Sketch Posterior (Back) Side Observations 7 th Grade Science I think the difference between the white and gray tissue is that ____. What I ThinkWhat I Know I think the large, diagonal line across the heart is ____. I think one half of the heart is larger than the other half because _____. We will fill this in after the dissection The Heart 7 th Grade Science How does the heart work?2/26/2016 Dissection Safety 7 th Grade Science Hold scalpel properly; it is extremely sharp. Where goggles at all times Do not taste or eat any part of the heart Wear gloves and avoid contact with skin Heart Dissection Procedures 7 th Grade Science Objective: Locate the blood vessels that supply (feed) the heart with blood. Structures: Coronary Artery Coronary Vein Functions: 1.The coronary arteries deliver oxygenated blood to the heart. 2.The coronary veins remove deoxygenated blood from the heart. Heart Dissection Procedures 7 th Grade Science Objective: Identify the veins that deliver deoxygenated blood to the heart. Structures: 1.Superior Vena Cava 2.Inferior Vena Cava Functions: 1. Superior Vena Cava returns blood from the top half of the body 2. Inferior Vena Cava returns blood from the bottom half of the body Posterior (Back) View Inferior V.C. Superior V.C. Heart Dissection Procedures 7 th Grade Science Objective: Expose the 2 chambers of the heart that hold and pump deoxygenated blood. Procedures: 1.Locate superior vena cava 2.Make an incision (cut) beginning at the superior vena cava to the bottom of the heart. 3.Cut deep enough that you can open the heart like a book. Posterior (Back) View Heart Dissection Procedures 7 th Grade Science Objective: Identify the 2 chambers of the heart that hold and pump deoxygenated blood. Structures: 1.Right Atrium 2.Right Ventricle 3.Tricuspid Valve Functions: 1. Right atrium receives blood from the superior and inferior vena cava 2. Right ventricle pumps blood to the lungs. 3. Tricuspid valve prevents blood from flowing backwards Right Ventricle Right Atrium Tricuspid Valve Heart Dissection Procedures 7 th Grade Science Objective: Identify the blood vessel that carries deoxygenated blood to the lungs. Structures: 1.Pulmonary Arteries Functions: 1.The pulmonary arteries carry deoxygenated blood away from the heart to the lungs. Procedures: Using your finger or a probe, locate the opening inside the right ventricle that leads to the pulmonary arteries. Right Ventricle Right Atrium Tricuspid Valve Heart Dissection Procedures 7 th Grade Science Objective: Identify the blood vessels that transport oxygenated blood to and from the heart. Structures: 1.Pulmonary Vein 2.Aorta Functions: 1.The pulmonary veins deliver oxygenated blood from the lungs to left atrium of the heart. 1.The aorta is the artery than moves oxygenated blood out of the heart. Posterior (Back) View Aorta Superior V.C. Pulmonary Vein Pulmonary Artery. Aorta Heart Dissection Procedures 7 th Grade Science Objective: Expose the 2 chambers of the heart that hold and pump oxygenated blood. Procedures: 1.Locate aorta 2.Make an incision (cut) beginning at the aorta, continuing through the pulmonary vein, and ending at the bottom of the heart. 3.Cut deep enough that you can open the heart like a book. Posterior (Back) View Superior V.C. Pulmonary Vein Heart Dissection Procedures 7 th Grade Science Objective: Identify the 2 chambers of the heart that hold and pump oxygenated blood. Structures: 1.Left Atrium 2.Left Ventricle 3.Mitral Valve Functions: 1. Left atrium receives blood from the pulmonary veins. 2. Left ventricle pumps blood out the aorta to the body. 3.Mitral valve prevents blood from flowing backwards Posterior (Back) View Mitral Valve Left Atrium Left Ventricle Heart Dissection Procedures 7 th Grade Science Objective: Locate the opening inside the left ventricle that leads to the aorta. Procedures: Using your finger or a probe, locate the opening inside the Left ventricle that leads out to the aorta. Posterior (Back) View Mitral Valve Left Atrium Left Ventricle Aorta Clean-Up Procedures 7 th Grade Science 1.Place your heart into plastic bag and write your table number and period on the bag. 2.Clean dissection tray 1.Throw away large pieces of tissue in garbage 2.Clean tray with sponge and water. 3.Clean dissection tools 1.Use hand brush 4.Wipe table down with disinfectant wipe 5.Place tray and dissection tools back on front bench. Conclusion 7 th Grade Science I think the difference between the white and gray tissue is that ____. What I ThinkWhat I Know I think the large, diagonal line across the heart is ____. I think one half of the heart is larger than the other half because _____. EXIT TICKET 7 th Grade Science Pick up a Qwizdom remote and use it to select the words that best complete the statements below. You will use each word once. Answer Choices: a.Oxygenated b.Deoxygenated c.Arteries d.Lung e.Capillaries f.Alveoli Veins return __(1)__ blood back to the heart. The heart then pumps the oxygen poor blood to either the right or left __(2)__. There, the blood picks up oxygen and drops off carbon dioxide at the __(3)__. Next, the __(4)__ blood returns back to the heart. The oxygen rich blood is pumped away from the heart through __(5)__. As it travels, the blood passes through very tiny blood vessels called __(6)__, where it delivers its O 2 load to the cells and picks up their waste, like CO 2. Then it returns back to the heart and the cycle repeats. DO NOW Use your notes to fill in the spaces: 7 th Grade Science SYSTEMFUNCTION Nervous Endocrine Respiratory Circulatory TEST REVIEW Test is on Monday! 7 th Grade Science