LW - Ch20 - Heart Identification Past Paper PDF April 2024

4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins LW - Ch20 - the Heart Identification ~30 mins Due: 11:59pm on Saturday, April 6, 2024 To understand how points are awarded, read the Grading Policy for this assignment. Art-labeling Activity: An Overview of the Cardiovascular System Iden...

4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins LW - Ch20 - the Heart Identification ~30 mins Due: 11:59pm on Saturday, April 6, 2024 To understand how points are awarded, read the Grading Policy for this assignment. Art-labeling Activity: An Overview of the Cardiovascular System Identify the arteries and veins of the systemic and pulmonary circuits. Part A Drag the labels to identify the arteries and veins of the systemic and pulmonary circuits. ANSWER: Reset Help Capillaries in head and neck Pulmonary arteries Systemic arteries Capillaries in lungs Pulmonary veins Left ventricle Right atrium Capillaries in abdominal organs Systemic veins Capillaries in upper limbs Capillaries in trunk and lower limbs Correct Art-labeling Activity: The Sectional Anatomy of the Heart (Part 1) Identify structural components of the heart. Part A Drag the labels to identify structural components of the heart. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 1/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Brachiocephalic trunk Help Reset Help Left common carotid artery Superior vena cava Left subclavian artery Right pulmonary arteries Left pulmonary arteries Aortic arch Reset Left pulmonary veins Pulmonary trunk Ascending aorta Inferior vena cava Descending aorta Correct Art-labeling Activity: The Sectional Anatomy of the Heart (Part 2) Identify structural components of the heart. Part A Drag the labels to identify structural components of the heart. ANSWER: Interatrial septum Fossa ovalis Aortic valve Pectinate muscles Cusp of tricuspid valve Cusp of mitral valve Interventricular septum Chordae tendineae Trabeculae carneae Papillary muscles Moderator band Correct Art-labeling Activity: The Superficial Anatomy of the Heart, Posterior View https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 2/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Learning Goal: To learn the superficial features of the heart on the posterior surface. Label the superficial features of the heart on the posterior surface. Part A Drag the labels onto the diagram to identify the superficial features of the heart on the posterior surface. ANSWER: Reset Help Arch of aorta Right pulmonary artery Left pulmonary veins Superior vena cava Left atrium Coronary sinus Left ventricle Right atrium Right ventricle Inferior vena cava Correct Art-labeling Activity: The Coronary Circulation, Posterior View Label the coronary blood vessels supplying the posterior portions of the heart. Part A Drag the labels onto the diagram to identify the coronary blood vessels supplying the posterior portions of the heart. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 3/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Reset Help Coronary sinus Circumflex artery Great cardiac vein Marginal artery Posterior interventricular artery Posterior vein of left ventricle Small cardiac vein Right coronary artery Middle cardiac vein Correct Art-labeling Activity: The Superficial Anatomy of the Heart, Anterior View Learning Goal: To learn the superficial features of the heart (anterior surface). Label the superficial features of the heart (anterior surface). Part A Drag the labels onto the diagram to identify the superficial features of the heart (anterior surface). ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 4/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Reset Help Arch of aorta Descending aorta Ascending aorta Superior vena cava Pulmonary trunk Auricle of right atrium Auricle of left atrium Right atrium Right ventricle Left ventricle Correct Art-labeling Activity: The Conducting System of the Heart Identify the structural components of the conducting system of the heart. Part A Drag the labels to identify the structural components of the conducting system of the heart. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 5/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Reset Help Reset Help Sinoatrial (SA) node Atrioventricular (AV) node Internodal pathways Bundle branches AV bundle Purkinje fibers Correct Art-labeling Activity: Heart Sounds Connect key events in the cardiac cycle with heart sounds. Part A Drag the labels to connect key events in the cardiac cycle with heart sounds. ANSWER: Semilunar valves close Semilunar valves open AV valves close "Lubb" AV valves open "Dubb" Correct IP: Pathway of Blood Through the Heart https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 6/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Click on the link or the image below to view an animation on the Pathway of Blood Through the Heart from Interactive Physiology (IP), then answer the questions to the right. IP: Pathway of Blood Through the Heart Part A The heart is actually (one, two, or three) pumps? Hint 1. Think about how many circuits you have studied. ANSWER: three pumps one pump two pumps Correct Yes, the right side of the heart pumps to/from the lungs (pulmonary circuit) and the left side of the heart pumps to/from the rest of the body (the systemic circuit). Part B Which chamber receives blood from the superior and inferior venae cavae? Hint 1. Which chamber receives oxygen-poor blood? ANSWER: left ventricle right atrium left atrium right ventricle Correct Yes, the right atrium receives oxygen-poor blood from the systemic circuit. Part C Which heart chamber receives blood from the pulmonary veins? Hint 1. Which chamber receives oxygenated blood? ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 7/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins right atrium left atrium right ventricle left ventricle Correct Yes, the left atrium receives oxygenated blood from the pulmonary veins. Part D Which heart chamber pumps oxygen-poor blood out the pulmonary trunk? Hint 1. Which side of the heart pumps blood to the lungs? ANSWER: left atrium left ventricle right atrium right ventricle Correct Yes, the right ventricle pumps oxygen-poor blood out the pulmonary trunk to the lungs. Part E Which chamber pumps oxygenated blood out the aorta to the systemic circuit? Hint 1. Think about which chambers are pumps. ANSWER: right ventricle left ventricle right atrium left atrium Correct Yes, the left ventricle pumps oxygenated blood out the aorta to the entire body (systemic circuit). Art-labeling Activity: The Coronary Circulation, Anterior View Learning Goal: To learn the coronary blood vessels supplying the anterior portions of the heart. Label the coronary blood vessels supplying the anterior portions of the heart. Part A Drag the labels onto the diagram to identify the coronary blood vessels supplying the anterior portions of the heart. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 8/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Reset Help Left coronary artery Circumflex artery Right coronary artery Atrial arteries Anterior cardiac veins Anterior interventricular artery Great cardiac vein Small cardiac vein Marginal artery Correct Art-labeling Activity: The Location of the Heart in the Thoracic Cavity Label the gross anatomy of the heart and its surrounding structures. Part A Drag the labels onto the diagram to identify the gross anatomy of the heart and its surrounding structures. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 9/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Reset Trachea Help Thyroid gland Base of heart Right lung Left lung Apex of heart Diaphragm Correct Dissection Video Activity: Sheep Heart (3 of 3) Watch the animation, then answer the questions. Part A What is the function of the coronary circulation? Hint 1. Vessels of the coronary circulation can be observed on the surface of the heart itself. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 10/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Provide a blood supply to the lungs Provide a blood supply to the pericardium Provide a blood supply to the aortic arch Provide a blood supply to the heart Correct Correct. The coronary circulation provides oxygenated blood to the heart through coronary arteries. Coronary veins return the deoxygenated from the heart to the coronary sinus on the posterior surface of the heart. The coronary sinus empties the deoxygenated blood directly into the right atrium where it joins deoxygenated from the body. Part B What is the ligamentum arteriosum? Hint 1. Think about the location of the ligamentum arteriosum. ANSWER: A ligament attaching the aorta to the superior vena cava A ligament securing the aorta A remnant of the ductus arteriosus A remnant of the foramen ovale Correct Correct. The ligamentum arteriosum is a remnant of the ductus arteriosus. The ductus arteriosus is a fetal shunt that connects the pulmonary trunk to the aorta. Part C Which chamber of the heart exits into the pulmonary trunk? Hint 1. Is the pulmonary trunk carrying oxygenated or deoxygenated blood? ANSWER: Left atrium Left ventricle Right ventricle Right atrium Correct Correct. The right ventricle pumps deoxygenated blood through the pulmonary semilunar valve into the pulmonary trunk to be distributed to the lungs. Part D Identify the ear like flaps that are attached to the top chambers of the heart. Hint 1. The top two chambers of the heart are the right and left atria. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 11/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Coronary sinus Atrium Auricle Pectinate muscles Correct Correct. The auricles are flap like extensions of the atria that are observed on the external surface of the heart. Part E The first branch off the arch of the aorta is the brachiocephalic artery in both the sheep and the human. Hint 1. Recall the great vessels that exit of the aortic arch in a human. ANSWER: False True Correct Correct. In both the sheep and human, the brachiocephalic artery is the first major vessel to exit the arch of the aorta. Further branching of the brachiocephalic artery and the arch of the aorta differs between a sheep and a human. Part F The base of the heart is located at the bottom of the heart. Hint 1. The base of an organ is the widest end of the organ. ANSWER: True False Correct Correct. The base is located at the top of the heart. It is unusual to see the largest portion of an organ at the top. Typically, the base is at the bottom of an organ, as in the lungs. Dissection Video Activity: Sheep Heart (2 of 3) Watch the animation, then answer the questions. https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 12/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Part A Identify the most muscular chamber. Hint 1. Think about the size and functions of all four chambers of the heart. ANSWER: Right atrium Right ventricle Left atrium Left ventricle Correct Correct. The left ventricle is responsible for pumping blood out to the body. This requires a lot of force. The left ventricle is the most muscular in order to pump the blood with adequate force. Part B Name the inner lining of the heart. Hint 1. The inner lining of the heart is a continuation of the same tissue that lines blood vessels. ANSWER: Epicardium Pericardium Myocardium Endocardium Correct Correct. The endocardium is the smooth, slick lining of the chambers of the heart. Endocardium is a continuation of endothelium that lines blood vessels. Both endocardium and endothelium are composed of simple squamous epithelial tissue, which minimizes friction between the wall of the chamber/vessel and the blood. Part C Identify the valve found between the left atrium and left ventricle. Hint 1. The valves separating the atria from the ventricles are known as atrioventricular valves. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 13/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Aortic valve Bicuspid (mitral) valve Pulmonary valve Tricuspid valve Correct Correct. The atrioventricular valve on the left is the bicuspid valve. The mitral valve is also called the mitral valve. Part D What heart chamber pushes blood through the aortic semilunar valve? Hint 1. Does oxygenated or deoxygenated blood pass through the aorta? ANSWER: Left ventricle Right ventricle Left atrium Right atrium Correct Correct. The aortic valve is located between the left ventricle and the aorta. The left ventricle pumps oxygenated blood out of the heart through the aortic valve to the body. Part E Name the irregular ridges of muscle lining the ventricles that are not indirectly to the atrioventricular values. Hint 1. These ridges of muscle are named after their irregular ridge-like appearance. ANSWER: Chordae tendineae Pectinate muscles Papillary muscles Trabeculae carneae Correct Correct. Trabeculae carneae are the small elevated ridges of muscle arranged in a web type fashion found in both the right and left ventricles. Part F What fibrous structure functions to anchor the atrioventricular valves in a closed position? Hint 1. During ventricular contraction, pressure in the ventricles increase above atrial pressure. Reinforcement is needed to keep the atrioventricular valves closed at this time, preventing backflow of blood into the atrium. ANSWER: https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 14/15 4/1/24, 10:39 PM LW - Ch20 - the Heart Identification ~30 mins Trabeculae carneae Papillary muscle Chordae tendineae Moderator band Correct Correct. Chordae tendineae are the fibrous cords that attach the atrioventricular valves to papillary muscles. They help anchor the atrioventricular valves in a closed position during ventricular contraction. Part G Blood on the right never mixes with blood on the left, once the heart is fully developed. Hint 1. During fetal development, there is communication between the right and left sides of the heart. Does this mixing continue throughout life? ANSWER: False True Correct Correct. Once fetal modifications (i.e. foramen ovale, ductus arteriosus) close following delivery of the infant, blood on the right side of the heart should not mix with blood on the left side of the heart. Score Summary: Your score on this assignment is 100%. You received 7 out of a possible total of 7 points. https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=10505306 15/15