Heart (exam 4) – Flashcards
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Apex
(Within the body, the apex of the heart is oriented anteriorly and the base of the heart forms the posterior surface.)
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Which heart structure is located most anteriorly?
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adheres to the inner surface of the fibrous pericardium
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The parietal layer of the serous pericardium __________.
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E
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Identify the letter that indicates the left coronary artery.
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B
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Identify the letter that indicates the aortic arch.
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B
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Identify the letter that indicates anchor points for chordae tendineae, comprised of cells from the myocardium.
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E
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Identify the letter that indicates the tissue layer of the heart known as the epicardium.
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A
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Identify the letter that indicates the left atrioventricular valve.
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Papillary muscles
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What structures anchor the chordae tendineae?
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visceral layer of serous pericardium.
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The epicardium is the same as the_____.
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myocardium
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Of the three layers of the heart wall, the layer that contains the cardiac muscle is the_____.
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false
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true or false??
The correct sequence of heart wall layers from superficial to deep is epicardium, endocardium, and myocardium.
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aortic arch
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Which artery is highlighted?
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inferior vena cava
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Which vessel is highlighted?
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left auricle
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Which structure is highlighted?
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pulmonary veins
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Which vessels are highlighted?
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superior vena cava
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Which vessels are highlighted?
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right atrium
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Which structure is highlighted?
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apex
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Identify the highlighted structure.
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ascending aorta
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Identify the highlighted vessel.
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left auricle
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Identify the highlighted structure.
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aortic arch
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Identify the highlighted vessel.
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papillary muscles
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Identify the highlighted structures.
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right auricle
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Identify the highlighted structure.
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right pulmonary veins
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Identify the highlighted vessels.
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superior vena cava
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Identify the highlighted vessel.
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tricuspid valve
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Identify the highlighted structure.
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B. Aorta to smaller systemic arteries to systemic capillaries to systemic veins to right atrium through the tricuspid valve
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Select the correct partial path below. This path is part of the complete blood flow pathway. You should be able to trace flow starting in any location.
A. Systemic veins returning to the left atrium and forward through the mitral valve.
B. Aorta to smaller systemic arteries to systemic capillaries to systemic veins to right atrium through the tricuspid valve
C. Pulmonary trunk to pulmonary arteries to pulmonary capillaries to pulmonary veins returning to the right atrium.
D. Pulmonary artery into left atrium through mitral valve to left ventricle
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C. the pulmonary arteries carry oxygenated blood back from the lungs to the heart
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Which statement concerning the pulmonary arteries is FALSE?
A. The pulmonary arteries carry poorly oxygenated blood.
B. The pulmonary arteries are part of the pulmonary circuit.
C. The pulmonary arteries carry oxygenated blood back from the lungs to the heart.
D. The right ventricle pumps blood into the pulmonary arteries.
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ascending aorta
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Blood moves from the left ventricle into what vessel?
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ventricular contraction and ventricular filling
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In common usage, the terms "systole" and "diastole" refer to __________, respectively.
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left atrium
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The heart chamber that receives oxygenated blood from the pulmonary veins.
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right atrium
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The heart chamber that receives blood from the superior vena cava, inferior vena cava, and coronary sinus.
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A. The pulmonary vein
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Which of the following vessels does not carry oxygen-poor blood to the heart?
A. the pulmonary vein
B. the superior vena cava
C. the inferior vena cava
D. the coronary sinus
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D. coronary sinus
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Which vessel returns most of the venous blood from the heart to the right atrium?
A. the great cardiac vein
B. the posterior interventricular vein
C. the anterior cardiac vein
D. the coronary sinus
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forced from the ventricles into the aorta and pulmonary trunk.
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During ventricular systole, blood is_________.
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left atrium
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Blood within the pulmonary veins returns to the__________.
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right atrium
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Oxygen-poor blood returns to the heart and enters the______.
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the ventricles are relaxing
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he semilunar valves are closed when______.
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aorta
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During left ventricular systole, blood exits the heart to enter the_____.
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when the ventricle is in systole.
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The tricuspid valve is closed_____.
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true
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true or false?
Oxygen-rich blood returning from the lungs enters the left atrium through two right and two left pulmonary veins.
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aortic valve
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Which valve would you hear if you were listening to the heart at its superior right point?
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ventricular contraction (ventricular systole)
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During which stage of the heartbeat is the valve shown here closed?
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in the left fifth intercostal space, in line with the middle of the clavicle
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The mitral valve is best heard __________.
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preventing eversion of the valves into the atria
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What is the function of the chordae tendineae and papillary muscles of the bicuspid and tricuspid valves?
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close when the ventricles relax
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The two semilunar valves __________.
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aortic
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A medical student is listening to a specific valve of a patient's heart in the region of the second intercostal space and the right sternal margin. The student is listening to the __________ valve.
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pulmonary semilunar valve
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The valve responsible for preventing backflow of blood from the lungs into the heart.
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papillary muscles
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Contraction of these structures tightens the chordae tendineae, preventing valve prolapse.
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between the ventricles and the great arteries.
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Semilunar valves are located____.
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superior right
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At which corner point of the heart does one listen for the sound of the closing aortic semilunar valve?
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vibrations that result from the semilunar valves slamming shut.
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If the beating heart makes a "lub-dup" sound, the "dup" sound is caused by_______.
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SA and AV nodes
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Which areas of the heart are innervated by parasympathetic nerve fibers?
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supply parasympathetic innervation to the heart, which slows the heart rate
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Branches of the vagus nerve __________.
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A. SA node, AV node, AV bundle, bundle branches, Purkinje fibers
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Which of these conduction sequences through the heart is correct?
A. SA node, AV node, AV bundle, bundle branches, Purkinje fibers
B. SA node, AV bundle, AV node, Purkinje fibers, bundle branches
C. SA node, AV node, AV bundle, Purkinje fibers, bundle branches
D. AV node, Purkinje fibers, AV bundle, SA node, bundle branches
E. AV bundle, AV node, SA node, Purkinje fibers, bundle branches
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atrioventricular bundle
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Cells of the conducting system located between the AV node and bundle branches.
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Vagus nerve
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Parasympathetic impulses to the SA node are transmitted on this cranial nerve.
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B. They slow the heartbeat
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What is the effect of the parasympathetic fibers carried by the vagus nerve?
A. They increase the force of cardiac contractions.
B. They slow the heartbeat.
C. The heartbeat is not influenced by the vagus nerve.
D. They speed up the heartbeat.
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inferior part of the interatrial septum.
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The atrioventricular node is located in the_____.
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medulla oblongata of the brain stem.
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The cardiac centers that control heart rate are located in the____.
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true
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true or false?
The electrical event that begins each heartbeat occurs at the sinoatrial (SA) node.
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false
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true or false?
Parasympathetic fibers innervate the SA node, AV node, and cardiac musculature.
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coronary sinus
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Identify the vessel that returns most of the blood from the heart into the right atrium.
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supply blood to the heart muscle itself
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The right and left coronary arteries __________.
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marginal artery and posterior interventricular artery
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The right coronary artery branches into which two arteries?
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C. the great cardiac veins
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Which of the following veins does not deliver blood directly to the right atrium?
A. inferior vena cava
B. coronary sinus
C. the great cardiac veins
D. superior vena cava
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anterior interventricular artery/Left anterior descending artery (LAD).
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A specific coronary vessel that lies in the anterior interventricular sulcus is the_______.
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right coronary artery.
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A specific coronary vessel that lies in the coronary sulcus is the_______.
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great cardiac vein
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This blood vessel is located in the anterior interventricular sulcus.
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false
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true or false?
The middle cardiac vein lies alongside the anterior interventricular artery.
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false
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true or false?
The right and left coronary arteries arise from the descending aorta.
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anterior interventricular
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Which artery is highlighted?
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circumflex
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Which artery is highlighted?
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great cardiac
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Which vein is highlighted?
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right marginal artery
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Which vessel is highlighted?
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anterior interventricular artery
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Identify the highlighted vessel.
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great cardiac vein
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Identify the highlighted vessel
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marginal
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Identify the highlighted artery.
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posterior interventricular artery
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identify the highlighted artery