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Ch.12/MED126
The Heart-Practice Test
| Question | Answer |
|---|---|
| The heart is located ________ to the diaphragm and _______ to the lungs? | Superior, medial |
| The diaphragm is located _______ to the heart and the lungs are _______ to the heart? | Inferior, lateral |
| The area in which the heart is located is called the? | Mediastinum |
| The heart is located in an area called the mediastinum, and is protected by the? | Rib cage |
| The outermost of the pericardial membranes is the ______ pericardium? | Fibrous |
| The middle layer of the pericardial membranes is the ______ pericardium? | Parietal |
| The innermost of the pericardial membranes is the _______ pericardium? | Visceral |
| The visceral pericardium is also called the? | Epicardium |
| The endocardium is the lining of the heart, and its function is to? | Prevent abnormal clotting |
| The walls of the chambers of the heart are formed by the? | Myocardium |
| The layer of the heart wall that pumps blood is the? | Myocardium |
| The __________ returns blood from the upper body to the right atrium? | Superior vena cave |
| The __________ returns blood from the lower body to the right atrium? | Inferior vena cava |
| The _________ return blood from the lungs to the left atrium? | Pulmonary veins |
| The atria of the heart produce the hormone ___ when blood pressure _______? | ANP, increases |
| The function of ANP is to increase excretion of _______ and _______ by the _______? | Sodium ions, water, kidneys |
| The ______ emerges from the left ventricle and takes blood to the _____? | Aorta, body |
| The ______ emerges from the right ventricle and takes blood to the ____? | Aorta, body |
| The left ventricle pumps blood into the? | Aorta |
| The right ventricle pumps blood into the? | Pulmonary artery |
| The ventricle that has a thicker wall is the _____, because it must pump blood to the ____? | Left, body |
| The general function of all the valves of the heart is to? | Prevent backflow of blood |
| The __________ valve prevents backflow of blood from the left ventricle to the left atrium? | Mitral; left AV; bicuspid |
| The _______ valve prevents backflow of blood from the ________ to the _________? | Right, ventricle, Right atrium |
| The right and left AV valves close when the _______ contract? | Ventricles |
| The aortic semilunar valve prevents backflow of blood from the _____ to the ________? | Aorta, left ventricle |
| The pulmonary semilunar valve prevents backflow of blood from the _______ to the ________? | Pulmonary artery, right ventricle |
| The aortic and pulmonary semilunar valves close when the _______ relax? | Ventricles |
| The coronary arteries are branches of the ______ and supply blood to the ________? | Aorta, myocardium |
| For the myocardium, the most important substance in blood is? | Oxygen |
| The coronary sinus is the union of the _________ and returns blood to the _________? | Coronary veins, right atrium |
| The term for contraction of the chambers of the heart is? | Systole |
| The term for relaxation of the chambers of the heart is? | Diastole |
| The sequence of events in one heartbeat is called the? | Cardiac cycle |
| During the cardiac cycle, when the ventricles are in systole the atria are in? | Diastole |
| During the cardiac cycle, when the atria are in systole, the ventricles are in? | Diastole |
| During the cardiac cycle, the _____ contract first, followed by contraction of the _______? | Atria, ventricles |
| In the cardiac cycle, all blood from the ventricles to the arteries must be? | Pumped |
| In the cardiac cycle, some passive blood flow occurs from the _____ to the ______? | Atria, ventricles |
| In the cardiac cycle, the most important pumping of blood occurs from the _______ to the ______? | Ventricles, arteries |
| The heart is a double pump: The right side of the heart receives blood from the _____ and pumps it to the ______? | Body, lungs |
| The heart is a double pump: The left side of the heart receives blood from the ______ and pumps it to the _____? | Lungs, body |
| The part of the heart that initiates each beat is the? | SA node |
| The SA node is located in the? | Wall of the right atrium |
| The normal range of resting heart rate for a healthy adult is ___ to ___ bpm? | 60-80 |
| The electrical impulses for the heartbeat pass from the _____ of the atria to the _______ in the ventricles? | AV node, AV bundle |
| The parts of the cardiac conduction pathway in the ventricles, in order, are the ______, ______, and _______? | AV bundle, bundle branches, Purkinje fibers |
| The electrical activity of the heart may be seen in a tracing called a(n)? | ECG (electrocardiogram) |
| The part of the heart muscle that usually depolarizes first in a heartbeat is the? | SA node |
| Cardiac output is the amount of blood pumped by the left ventricle in? | One minute |
| Stroke volume is the amount of blood pumped by a ventricle in? | One beat |
| To calculate cardiac output, multiply ______ times ______? | Stroke volume, pulse |
| If cardiac output is 4900 mL and pulse is 70 bpm, then stroke volunme is? | 70 mL |
| If stroke volume is 80 mL and pulse is 70 bpm, then cardiac output is? | 5600 mL |
| If cardiac output is 6000 mL and stroke volume is 75 mL, then pulse is? | 80 bpm |
| During exercise, if cardiac output is 15,000 mL and stroke volume is 120 mL, then pulse is? | 125 bpm |
| During exercise, if pulse is 140 and the stroke volume is 110 mL, the cardiac output is? | 15,400 mL |
| A basketball player has a resting cardiac output of 5400 mL, a stroke volumes of 90 mL, and a resting pulse of? | 60 bpm |
| A certain level of cardiac output is needed at all times to maintain a normal _______ and to deliver sufficient _______ to all tissues? | Blood pressure, oxygen |
| The difference between the resting cardiac output and the maximum cardiac output is called the? | Cardiac reserve |
| The percent of the blood in a ventricle that is pumped out during systole is called the? | Ejection fraction |
| The part of the brain that regulates heart rate is the? | Medulla |
| The heart rate is increased by impulses carried by ______ nerves? | Sympathetic |
| The heart hate is decreased by impulses carried by ________ nerves? | Parasympathetic;vagus |
| The carotid and aortic sunuses contain _______ to detect changes in _______? | Pressoreceptors, blood pressure |
| The carotid and aortic bodies contain _______ to detect change in ________? | Chemoreceptors, blood oxygen level |
| the sensory nerves for the carotid sinus and body are the ________ nerves? | Glossopharyngeal |
| The sensory nerves for the aortic sinus and body are the _____ nerves? | Vagus |
| The carotid sinus is strategically located to detect changes as the blood is on its way to the? | Brain |
| The aortic sinus is strategically located to detect changes as soon as the blood leaves the? | Heart |
| A sudden drop in blood pressure will stimulate the cardiac ______ center in the ______ of the brain? | Accelerator, medulla |
| The response to a sudden drop in blood pressure is a rapid ______ in heart rate, brought about by _______ nerve impulses? | Increase, sympathetic |
Created by:
laceylake
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