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30 Cards in this Set
- Front
- Back
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Blood flows from the left atrium through the _____ valve into the left ventricle.
A) Mitral B) Aortic C) Pulmonic D) Tricuspid |
A. Mitral
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The inferior surface of the heart is formed by the:
A) Left atrium and left ventricle. B) Right and left ventricles. C) Right atrium and right ventricle. D) Right and left atria. |
B) Right and left ventricles.
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The right atrium receives venous blood from the head, neck, and thorax via the _____, from the remainder of the body via the _____, and from the heart via the _____.
A) Inferior vena cava; superior vena cava; coronary sinus. B) Superior vena cava; coronary sinus; inferior vena cava. C) Superior vena cava; inferior vena cava; coronary sinus. D) Coronary sinus; superior vena cava; inferior vena cava. |
C) Superior vena cava; inferior vena cava; coronary sinus.
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The right ventricle expels blood through the _____ valve into the pulmonary trunk.
A) Pulmonic B) Aortic C) Tricuspid D) Mitral |
A. Pulmonic
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The right atrium receives deoxygenated blood from the superior vena cava, which carries blood from the head and upper extremities.
A) True B) False |
True
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Blood pressure is the result of cardiac output multiplied by peripheral vascular resistance.
A) True B) False |
True
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The heart is divided into _____ cavities or chambers but functions as a _____-sided pump.
A) 4;3 B) 3;2 C) 2;4 D) 4;2 |
D. 4;2
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The primary chemical mediator of the parasympathetic division of the autonomic nervous system is:
A) Acetylcholine. B) Dopamine. C) Norepinephrine. D) Muscarine. |
A. Acetylcholine
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Blood pressure is determined by:
A) Heart rate multiplied by cardiac output. B) Stroke volume multiplied by heart rate. C) Cardiac output multiplied by peripheral vascular resistance. D) Stroke volume multiplied by peripheral vascular resistance. |
C) Cardiac output multiplied by peripheral vascular resistance.
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Which of the following are semilunar valves?
A) Aortic and pulmonic B) Aortic and tricuspid C) Pulmonic and mitral D) Tricuspid and mitral |
A) Aortic and pulmonic
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Blood leaves the left ventricle through the _____ valve to the aorta and its branches and is distributed throughout the body.
A) Pulmonic B) Tricuspid C) Mitral D) Aortic |
D. Aortic
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The anterior surface of the heart consists primarily of the:
A) Left ventricle. B) Right atrium. C) Left atrium. D) Right ventricle. |
D) Right ventricle.
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The _____ supplies the right atrium and ventricle with blood.
A) Right coronary artery B) Left main coronary artery C) Circumflex artery D) Left anterior descending artery |
A) Right coronary artery
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The inner membranous surface of the heart wall that lines the heart valves and chambers is called the:
A) Endocardium. B) Myocardium. C) Pericardium. D) Epicardium. |
A. Endocardium
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The coronary arteries originate at the base of the:
A) Pulmonary artery, immediately above the leaflets of the tricuspid valve. B) Pulmonary artery, immediately above the leaflets of the pulmonic valve. C) Aorta, immediately above the leaflets of the aortic valve. D) Superior vena cava, immediately above the sinoatrial node. |
C) Aorta, immediately above the leaflets of the aortic valve.
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Blood flows from the right atrium through the _____ valve into the right ventricle.
A) Aortic B) Pulmonic C) Tricuspid D) Mitral |
C. Tricuspid
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The coronary sinus, which receives blood from the intracardiac circulation, drains directly into the left ventricle.
A) True B) False |
B) False
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The base of the heart is found at approximately the level of the _____ intercostal space.
A) 1st B) 5th C) 2nd D) 4th |
C) 2nd
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The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the:
A) Endocardium. B) Pericardium. C) Epicardium. D) Myocardium. |
D) Myocardium.
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The apex of the heart is formed by the:
A) Tip of the right atrium. B) Left atrium and left ventricle. C) Right atrium and right ventricle. D) Tip of the left ventricle. |
D) Tip of the left ventricle.
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The left atrium receives blood from the:
A) Pulmonary arteries. B) Pulmonary veins. C) Inferior vena cava. D) Aorta. |
B) Pulmonary veins.
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Contraction, or the ejection of blood from a chamber of the heart, is called:
A) Diastole. B) Systole. C) Einthoven’s law. D) Starling’s law. |
B) Systole.
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Thin strands of fibrous connective tissue extend from the AV valves to the papillary muscles and prevent the AV valves from bulging back into the atria during ventricular systole. These strands are called:
A) Cardiac cilia. B) Purkinje fibers. C) Papillary muscles. D) Chordae tendineae. |
D) Chordae tendineae.
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The efficiency of the heart as a pump may be affected by abnormalities of cardiac muscle, the valves, or the conduction system.
A) True B) False |
True
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Stimulation of beta-adrenergic receptor sites will result in peripheral vasoconstriction.
A) True B) False |
B) False
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Sympathetic (adrenergic) receptor sites include:
A) Beta, muscarinic, and nicotinic receptor sites. B) Alpha, beta, and dopaminergic receptor sites. C) Dopaminergic, nicotinic, and muscarinic receptor sites. D) Alpha, nicotinic, and dopaminergic receptor sites. |
B) Alpha, beta, and dopaminergic receptor sites.
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The upper chambers of the heart that receive blood are called the:
A) Ventricles. B) Vena cavae. C) Sympathetic receptors. D) Atria. |
D) Atria
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The primary chemical mediator of the sympathetic division of the autonomic nervous system is:
A) Dopamine. B) Muscarine. C) Acetylcholine. D) Norepinephrine. |
Norepi
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Which side of the heart is a high-pressure system that pumps arterial blood to the systemic circulation?
A) Right B) Left |
Left
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Which side of the heart is a low-pressure system that pumps venous blood to the lungs?
A) Right B) Left |
Right
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