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Terms in this set (57)Oxygen-poor blood enters which chamber of the heart? Right atrium The right atrioventricular valve is also called the tricuspid valve The only arteries in the body that carry oxygen-poor blood are the coronary arteries. False Left ventricular contraction propels blood through which valve? Aortic valve How many pulmonary veins are there? Four Which of the following is not true for ventricular systole? The ventricles relax The ventricles begin to fill during ventricular diastole. True The semilunar valves close during ventricular diastole The atrioventricular valves open during ventricular diastole The ventricles begin to fill during ventricular diastole. True Atrial contraction accounts for most of the ventricular filling. False During which event of the cardiac cycle does aortic pressure reach its maximum? Ventricular ejection During which event of the cardiac cycle do the atria both relax and contract? Ventricular filling During which event of the cardiac cycle do both the atria and ventricles relax? Isovolumetric relaxation The audible heart sounds are caused by the contraction of the atria and ventricles. False The P wave of the ECG coincides with ventricular filling. True Put the pattern of circulation into the correct order, beginning with the pulmonary circulation. 1. Blood leaves the right side of the heart. 2. Blood enters the pulmonary arteries and travels to the lungs. 3. Blood enters the pulmonary veins. 4. Blood enters the left side of the heart. 5. Blood enters the systemic arteries. 6. Blood delivers oxygen to the tissues, and then enters systemic veins. Unidirectional flow in the heart is ensured because the heart contains __________ that prevent backflow. valves Which of the following is the region of the thoracic cavity where the heart is located? Mediastinum Label the structures of the pericardium in the figure. Check all that are a function of the pericardium. Prevent the heart from bouncing in the thoracic cavity. Prevent the heart from overfilling with blood. Create a near-frictionless environment through the production of serous fluid. The sulcus that separates the atria from the ventricles is the ____________ sulcus. atrioventricular Label the internal anatomy of the heart. In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called pectinate muscles The specific valve that prevents backflow of blood into the right ventricle when the ventricles relax is the ______________ valve. pulmonary Match the heart valve with its description. 1. Tricuspid valve.
Label the coronary arteries in an anterior view of the heart. Check all that are characteristics of cardiac muscle. Cells are short and branching. Cells have one or two nuclei in the center of the cell. They are composed of thick and thin filaments. The functional contractile unit is the sarcomere. Place the locations of the heart's conducting system in order, beginning with the location where the heartbeat is initiated. 1. Sinoatrial (SA) node. Put the steps of the cardiac cycle into the correct order, starting with the beginning of the cardiac cycle. 1. Atrial
contraction and ventricular filling. Check all that occur during ventricular systole. The semilunar valves open to allow blood to flow into the large arteries. The AV valves close to prevent backflow of blood into the atria. Check all of the ways in which the heart chambers are involved in pulmonary circulation. Oxygenated blood enters the left atrium. The right ventricle pumps deoxygenated blood to the lungs. Pulmonary veins pass blood into the left atrium whereas pulmonary arteries carry blood away from the right ventricle. Correctly label the following external anatomy of the anterior heart.
Correctly label the following external anatomy of the anterior heart. Correctly label the following external anatomy of the posterior heart. Correctly label the following external anatomy of the posterior heart. Correctly label the pathway of blood flow through the heart, beginning with the right atrium.
Correctly label the pathway for the cardiac conduction system. Place a single word into each sentence to make it correct. Not all terms will be used. The SA node SPONTANEOUSLY fires at regular intervals. This is because the cells of the SA node do not have a stable RESTING membrane potential like skeletal muscles or neurons. Their membrane potential starts at about -60 mV and drifts upward. This upward drift towards a gradual DEPOLARIZATION is called the pacemaker potential. This results from a slow inflow of Na+ without a compensating outflow of K+ Place a single word into each sentence to make it correct. Not all terms will be used. When atrial pressure is greater than ventricular pressure, the AV valves open. When ventricular pressure rises above atrial pressure, the blood in the ventricle pushes the AV valves CLOSED. In the SL valves, when the pressure in the VENTRICLES is greater than the pressure in the arteries, the SL valves are forced open. When ventricular pressure is lower than ATREIAL pressure, arterial blood holds the SL valves closed. Classify the following images into the phase of the cardiac cycle they represent. ... Drag each statement to the appropriate position to identify the valve being described. Indicate whether each structure is part of the systemic or pulmonary circuit. Indicate the heart chamber responsible for the given function. Drag each label into the appropriate position to characterize the events of a single heart cycle as seen on an EKG tracing. Complete each sentence by dragging the labels to the appropriate blanks. Then place each sentence in a logical order beginning with blood entering the right side of the heart. 1. The contraction of the heart begins with autorhythmic depolarization of the SINOATRIAL node located in the superior portion of the posterior atrial wall. 2. From the PACEMAKER, the wave of depolarization disperses through the myocardium of the atria. 3. Depolarization then arrives at the ATRIOVENTRICULAR node located in the inferior interatrial septum. 4. The AV node fires causing the signal to travel into the AV BUNDLE BRANCHES as it passes through the INTERVENTRICULAR SEPTUM. 5. Making a U-turn at the apex of the heart, the signals are then carried by the PURKINJE FIBERS through the exterior walls of the ventricles. Place the heart wall structures in the order you would find them, beginning with the most superficial one first. 1. Fibrous layer of the pericardial sac. 2. Serous layer of the pericardial sac. 3. Pericardial cavity. 4. Epicardium 5. Myocardium 6. Endocardium The wall of the __________ is much thicker than any other chamber in the heart which allows for stronger contractions to pump blood through the systemic circulation. left ventricle Match the vessel with its associated chamber. 1. Inferior and superior vena cava -- Right atrium 2. Pulmonary trunk -- Right ventricle 3. Pulmonary veins -- Left atrium 4. Aorta -- Left ventricle Match the component of the electrocardiogram to the correct definition. 1. P wave -- Atrial depolarization 2. QRS complex -- Ventricular depolarization 3. T wave -- Ventricular repolarization 4. PQ segment -- Atrial contraction or atrial systole 5. ST segment -- Ventricular contraction or ventricular systole Action potentials are carried by the Purkinje fibers from the bundle branches to the ventricular walls. True The action potential travels along the interventricular septum to the apex of the heart, where it then spreads superiorly along the ventricular walls. True The sequence of travel by an action potential through the heart is sinoatrial node, atrioventricular node, atrioventricular bundle, bundle branches, Purkinje fibers. In the heart, an action potential originates in the sinoatrial node Which of the following is true concerning the heart conduction system? Action potentials pass slowly through the atrioventricular node. What are the primary blood vessel types and their functions? Check all that apply. Arteries carry blood away from the heart. Veins carry blood back to the heart. Capillaries are the sites of exchange between the blood and the lungs or body cells. Match the specific area of the heart on the left side supplied by the coronary artery branch on the right. 1. Anterior interventricular Students also viewedHeart Lecture56 terms reannabear Ch. 19 Homework50 terms kaitlin_zemanek Anatomy Lecture Midterm43 terms itsryne Heart21 terms kyliesilva04 Sets found in the same folderHeart Lecture56 terms reannabear A&P 2 Connect - Blood27 terms kamzan96 A&P 2, Unit 2, Chapter 20 Homework50 terms alicia_vessels Anatomy and Physiology 2 Lab exam 1 MIDT…21 terms michelle_stgermain5 Other sets by this creatorQuality Assurance26 terms alicia_vessels SonoSim for Leg Artery and Vein40 terms alicia_vessels Sonography test 1106 terms alicia_vessels Final Review23 terms alicia_vessels Verified questions
chemistry Draw three isomers of trans-1,2-dichlorocyclobutane, and label them as either constitutional isomers or stereoisomers. Verified answer
physics The process shown in the $p V$-diagram is performed on $3.00$ moles of a monatomic gas. Estimate the amount of heat input for this process. Verified answer
chemistry Californium was first synthesized by bombarding an element with alpha particles. The products were califomium-245 and a neutron . What was the target element? Verified answer
engineering Some type of wood can be characterized as C1H1.5O0.7 with a lower heating value of 8380 Btu/lbm. Find its adiabatic flame temperature when burned with stoichiometric air at 1 atm, 77 F. Verified answer Recommended textbook solutions Hole's Human Anatomy and Physiology13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis 1,402 solutions
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Laboratory Manual for Human Anatomy and Physiology Main Version2nd EditionTerry R. Martin 2,025 solutions Other Quizlet setsWHAP - Important People61 terms caseyjx23_ Nursing 120 Exam 467 terms kjp10c HUIS 222-Online Test 218 terms allison_gunter Worse Now - Quiz15 terms Sanjay_Ravishankar At what stage of the cardiac cycle does blood flow into the coronary arteries?Thus, coronary blood flow occurs mostly during diastole, and the driving pressure gradient is the difference between mean diastolic pressure in the aortic root and mean right atrial pressure, which—during diastole, when the atrioventricular valves are open—is more or less equal to right and left ventricular pressure.
What is the filling phase of the heart called?The period of relaxation is called diastole in which the ventricle fills with blood and the period of ventricle contraction is called systole. Fig. 4.4 shows the cardiac cycle events for the left pump of the heart for two complete cycles.
Where does coronary circulation begin and end quizlet?Terms in this set (37) The heart is supplied by two coronary arteries: Right and Left which arise from the root of the ascending aorta. It tranverses the AV sulcus to the back of the heart and gives out several descending branches to both the ventricles. It terminates by anastamosing with the left coronary artery.
During which phase of the heartbeat does the heart fill with blood quizlet?Diastole: The phase of the heartbeat when the heart muscles relax and allows the chambers to fill with blood.
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During which phase of the cardiac cycle do the coronary arteries fill quizlet?
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