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Physiology 15
Chapter 15 quiz
| Question | Answer |
|---|---|
| bicuspid valve. | Valve between the left atrium and left ventricle |
| tricuspid valve. | Valve between the right atrium and right ventricle |
| right ventricle. | Chamber that pumps blood to the lungs |
| left ventricle. | Chamber that pumps blood into aorta |
| left atrium. | Chamber that receives oxygenated blood from lungs |
| right atrium. | Chamber that receives deoxygenated blood the body |
| aortic valve. | Valve between the left ventricle and aorta |
| pulmonary valve. | Valve between right ventricle and pulmonary trunk |
| What does pericardium do | Pericardium anchors the heart to the diaphragm. |
| superior vena cava | blood vessel which delivers deoxygenated blood from the head and neck to the heart |
| An embolus originating in the coronary sinus would first enter the | right atrium |
| Function of the chordae tendineae and papillary muscles of the heart | Help prevent the atrioventricular valves from protruding into the atria when the ventricles contract. |
| Which chamber of the heart has the thickest layer of myocardium? | left ventricle |
| The normal “pacemaker” of the heart is the | sinoatrial |
| What is normal heart action? | The two atria contract together, and then the two ventricles contract together. |
| Heart sounds are produced by? | closure of the heart valves |
| Heart rate and strength of contraction are controlled by the cardiovascular center, which is located in the | medullar |
| The portion of the ECG that corresponds to atrial depolarization is the | P wave |
| The opening of the semilunar valves is due tot he pressure in the | ventricles |
| On the surface of the heart, the boundaries between the atria and ventricles can be distinguished by the | coronary sulcus |
| The Frank-Starling law of the heart | Is important in maintaining equal blood output from both ventricles. |
| . Which of the following sequences best represents the pathway of an action potential through the heart’s conduction system? | sinoatrial (SA) node, atrioventricular, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers |
| What is NOT? true concerning the ventricular filing parts of the cardiac cycle? | The semilunar valves are open. |
| Cardiac output | equals stroke volume |
| Most heart problems are due to | problems in the coronary circulation |
| mitral valve | prolapse may cause heart murmur |
| cardiac tamponade | heart compression |
| pericarditis | inflammation of heart covering |
| systole | heart chamber contraction |
| angina pectoris | chest pain from ischemia |
| myocardial infarction | heart attack |
| diastole | heart chamber relaxation |
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