Directions: Draw a rectangle and divide it into quadrants. Label each quadrant for each chamber of the heart and give the function of each chamber. Add the four heart valves in the correct anatomical position to the diagram. Recall that the valves function as exits for each chamber. The AV valves are the exit for the atria and must open when blood leaves the atria. The semilunar valves are the exit for the ventricles and must be open during ventricular systole. Add the blood vessels associated with the heart and indicate the direction of blood flow through the vessels with arrows. Construct a sequentially numbered list that traces the anatomical location of a drop of blood as it journeys through the heart, beginning in the vena cava and ending in the coronary arteries. The list should include all chambers, valves, and vessels encountered on the journey. You may add numbers to the list below if needed. 1. vena cava 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
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vena cava - The journey of the drop of blood begins in the superior and inferior vena cava, which are the large veins that bring deoxygenated blood from the body back to the heart. Show more…
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Make a primitive diagram of the heart and associated blood vessels. It must be your own drawing (not a pre-printed diagram). It does not need to show extensive structural detail. Label each of the listed structures in your diagram. Show the direction of blood flow through each structure. When completed, you should have a clear picture of the two circulation routes: pulmonary circulation and systemic circulation. Include the left atrium, right atrium, left ventricle, right ventricle (in correct anatomical location), the AV valves between the corresponding atrium and ventricle, the SL valves where blood exits the corresponding ventricle, the superior and inferior vena cava, the pulmonary trunk and branching to the left and right pulmonary arteries (connect each artery to the corresponding lung), the left and right pulmonary veins (show the pulmonary veins connected to the corresponding lung), the aorta (divide the aorta into two parts, connect one part to the superior vena cava and the other part to the inferior vena cava). Make a primitive microscopic view of five to six cardiac muscle cells. The cells are connected together by intercalated discs. At least one of your drawn cells must branch to connect to two cells. Show the direction of action potential transmission through your drawn cells. Now that you have an image of how cardiac muscle cells are connected, explain how the electrical conduction system of the heart operates. Explain how each chamber has coordinated contraction which forces blood out of the chamber.
Sri K.
Madhur L.
Put in Order (arrange these structures in the order in which blood passes through them-assume that the blood is about to leave the right atrium) aorta aortic semilunar valve left ventricle left atrium lungs mitral valve pulmonary semilunar valve pulmonary artery right ventricle superior/inferior vena cava tissues of the body tricuspid valve Fill-in (complete each statement with the correct term) 1. The flaplike lateral wall of each atrium is called the __? 2. The __? valve is also known as the mitral valve or left AV valve. 3. The right AV valve is also known as the __? valve. 4. The aortic semilunar valve has __? pocketlike flaps of tissue. 5. The __? are fibrous structures that prevent the cuspid valves from prolapsing (bending backward). 6. One-way flow of blood from the right ventricle is ensured by the presence of the __? valve. 7. Mitral valve prolapse, which is abnormal, may allow blood to enter the __? during contraction of the left ventricle. 8. The small cardiac vein and right coronary artery can be found along the rig-- __? sulcus. 9. The great cardiac vein and anterior interventricular artery can be found along the anterior __? sulcus. 10. The __? is a muscular wall between the left and right ventricles. 11. The myocardium of the __? ventricle is thicker than the other ventricle. 12. The wall of the aorta is thicker/thinner than the wall of the superior vena cava. 13. The __? are beamlike processes of the inner face of the myocardium. 14. The "point" of the heart is called the __? . 15. In the sheep heart, the right atrium is __? to the right ventricle.
Adi S.
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