Quiz
Cardiovascular System
Perguntas do quiz (17)
1The heart muscle is stimulated by nerves and self-excitable.
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2Autorythmic cells use which of the following ions for the rising phase of an action potential?
- ACalcium
- BPotassium
- CSodium
- DNone of the Above
3Atrial excitation begins when...?
- ASinoatrial node generates an impulse.
- BAn impulse is delayed at the atrioventricular node.
- CThe impulse passes to the heart apex.
- DNone of the Above
4The heart is stimulated by the parasympathetic cardioaccelatory centre.
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5Ventricular is represented by which letter on the electrocardiograph shown?
- AP
- BQ
- CR
- DS
- ET
6The heart sound (lub-dup) are associated with the opening of the heart valves.
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7Which of the following are true of the cardiac output?
- ACO is the amount of blood pumped by each ventricle in one minute.
- BCO is the product of heart rate and stroke volume.
- CCO is the amount of blood pumped out by a ventricle with each beat.
- DCO is the number of heart beats per minute.
8Cardiac reserve is the difference between resting and maximal CO.
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9End Systolic Volume (ESV) is the amount of blood collected in a ventricle during diastole.
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10Which of these best describes preload?
- AThe amount ventricles are stretched by contained blood.
- BThe back pressure exerted by blood in the large arteries leaving the heart
- CThe cardiac cell contractile force.
- DNone of the Above
11Which of the following decrease heart contractability?
- AAcidosis
- BTemperature Extremes
- CIncreased extracellular K+
- DCalcium channel blockers
12Sympathetic nervous system (SNS) stimulation is activated by stress, anxiety, excitement, or exercise.
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13What is the Atrial (Bainbridge) Reflex?
- AA sympathetic reflex initiated by increased blood in the atria.
- BA parasympathetic reflex initiated by increased blood in the ventricles.
- CA sympathetic reflex initiated by increased blood in the ventricles.
- DA parasympathetic reflex initiated by increased blood in the atria.
14The hormone thyroxin decreases heart rate.
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15Congestive heart failure (CHF) is caused by:
- ACoronary atherosclerosis
- BPersistent high blood pressure
- CMultiple myocardial infarcts
- DDilated cardiomyopathy
16Which of these are examples of Congenital Heart Defects?
- AVentricular Septal Defect
- BCoarctation of the Aorta
- CTetralogy of Fallot
- DAll of the Above
17The decline in cardiac reserve is an age related change that can affect the heart?
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Informações
- Descrição
- CVS Semester 2 in HBS at UWE.
- Autor
- Charlotte Camilla
- Idioma
- English
- Visualizações
- 60
- Etiquetas
- Avaliação
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