HEART REVIEW.docx

HEART REVIEW: Question 1 (1 point) A vein is a blood vessel that Question 1 options: carries blood away from the heart. carries deoxygenated blood. carries oxygenated blood. carries blood back to (toward) the heart. Question 2 (1 point) In the systemic circuit the arteries carry Question 2 options: always deoxygenated blood. either oxygenated or deoxygenated blood. always deoxygenated blood away from the heart. always oxygenated blood. Question 3 (1 point) The ____________ allows the heart to beat without friction. Question 3 options: epicardium pericardium myocardium endocardium Question 4 (1 point) The ________________ consists of a simple squamous epithelium (endothelium) and a thin layer of areolar connective. Question 4 options: endocardium pericardial cavity epicardium myocardium

fibrous skeleton Question 5 (1 point) The _______________ carry/ies oxygen-poor (deoxygenated) blood from the right ventricle to the lungs. Question 5 options: superior vena cava aorta inferior vena cava pulmonary trunk pulmonary veins Question 6 (1 point) Which of the following pair of blood vessels carry oxygen-poor (deoxygenated) blood? Question 6 options: Pulmonary veins and pulmonary arteries. Superior venae cava and pulmonary arteries. Pulmonary veins and superior vena cava. Aorta and pulmonary veins. Aorta and superior venae cava. Question 7 (1 point) The right pulmonary veins drain blood into the Question 7 options: right atrium. left ventricle. left atrium. right ventricle. Question 8 (1 point) The pulmonary semilunar valve Question 8 options: prevents back flow of blood from the left ventricle to the pulmonary trunk. prevents back flow of blood from the right ventricle to the pulmonary trunk.

prevents back flow of blood from the pulmonary trunk to the left ventricle. prevents back flow of blood from the pulmonary trunk to the right ventricle. Question 9 (1 point) The _____________ attach the cusps of the AV valves to the papillary muscles. Question 9 options: pectinate muscles interventricular septum chordae tendineae trabeculae carneae Question 10 (1 point) The branches of the right coronary artery are the Question 10 options: anterior interventricular artery and the circumflex artery. circumflex artery and the marginal artery. marginal artery and posterior interventricular artery. anterior interventricular artery and the posterior interventricular artery. Question 11 (1 point) The atrioventricular (AV) node Question 11 options: connects electrically the atria to the ventricles. distributes the electrical excitation to the cardiocytes of the ventricles. delays the impulses to allow the atria to finish contracting before the ventricles start to contract. initiates each heartbeat and determines heart rate. Question 12 (1 point) Which of the following traces the correct route of the electrical impulses from the right atrium to the cardiocytes of the left ventricle? Question 12 options: Atrioventricular (AV) node, Sinoatrial (SA) node, atrioventricular bundle, left bundle branch, purkinje fibers. Sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular bundle, left bundle branch, purkinje fibers.

Sinoatrial (SA) node, atrioventricular (AV) node, purkinje fibers, atrioventricular bundle, left bundle branch. Sinoatrial (SA) node, atrioventricular (AV) node, left bundle branch, atrioventricular bundle, purkinje fibers. Question 13 (1 point) The P wave represents the Question 13 options: repolarization of ventricles. depolarization of atria. depolarization of ventricles. repolarization of atria. Question 14 (1 point) The T wave represents the Question 14 options: repolarization of ventricles. repolarization of atria. depolarization of atria. depolarization of ventricles. Question 15 (1 point) A persistent, resting adult heart rate above 100 bpm is referred as Question 15 options: sinus rhythm. nodal rhythm. tachycardia. bradycardia. Question 16 (1 point) An extra heartbeat produced in any region of spontaneous firing other than the SA node is called Question 16 options: arrhythmia heart block

extra-systole. nodal rhythm Question 17 (1 point) The second sound of the heart, described as dubb, is produced by the Question 17 options: opening of the semilunar valves. opening of the AV valves. closing of the AV valves. closing of the semilunar valves. Question 18 (1 point) In the period of ________________ the ventricles contract, the pressure increases, but the volume inside the ventricles does not change because every valve is closed. Question 18 options: isovolumetric relaxation isovolumetric contraction ventricular filling ventricular ejection Question 19 (1 point) The _____________ is the percentage of the end-diastolic volume that is ejected (about 54%). Question 19 options: ejection fraction (EF) stroke volume (SV) end-diastolic volume (EDV) end-systolic volume (ESV) Question 20 (1 point) The _____________ is the volume of blood that each ventricle ejects during ventricular ejection (about 70 mL). Question 20 options: ejection fraction (EF) end-systolic volume (ESV) end-diastolic volume (EDV)

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