735763
Descrição
Quiz por Charlotte Camilla, atualizado more than 1 year ago
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Criado por Charlotte Camilla
mais de 10 anos atrás
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Questão 1
Questão
The heart muscle is stimulated by nerves and self-excitable.
Responda
- True
- False
Questão 2
Questão
Autorythmic cells use which of the following ions for the rising phase of an action potential?
Responda
-
Calcium
-
Potassium
-
Sodium
-
None of the Above
Questão 3
Questão
Atrial excitation begins when...?
Responda
-
Sinoatrial node generates an impulse.
-
An impulse is delayed at the atrioventricular node.
-
The impulse passes to the heart apex.
-
None of the Above
Questão 4
Questão
The heart is stimulated by the parasympathetic cardioaccelatory centre.
Responda
- True
- False
Questão 5
Questão
Ventricular is represented by which letter on the electrocardiograph shown?
Responda
-
P
-
Q
-
R
-
S
-
T
Questão 6
Questão
The heart sound (lub-dup) are associated with the opening of the heart valves.
Responda
- True
- False
Questão 7
Questão
Which of the following are true of the cardiac output?
Responda
-
CO is the amount of blood pumped by each ventricle in one minute.
-
CO is the product of heart rate and stroke volume.
-
CO is the amount of blood pumped out by a ventricle with each beat.
-
CO is the number of heart beats per minute.
Questão 8
Questão
Cardiac reserve is the difference between resting and maximal CO.
Responda
- True
- False
Questão 9
Questão
End Systolic Volume (ESV) is the amount of blood collected in a ventricle during diastole.
Responda
- True
- False
Questão 10
Questão
Which of these best describes preload?
Responda
-
The amount ventricles are stretched by contained blood.
-
The back pressure exerted by blood in the large arteries leaving the heart
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The cardiac cell contractile force.
-
None of the Above
Questão 11
Questão
Which of the following decrease heart contractability?
Responda
-
Acidosis
-
Temperature Extremes
-
Increased extracellular K+
-
Calcium channel blockers
Questão 12
Questão
Sympathetic nervous system (SNS) stimulation is activated by stress, anxiety, excitement, or exercise.
Responda
- True
- False
Questão 13
Questão
What is the Atrial (Bainbridge) Reflex?
Responda
-
A sympathetic reflex initiated by increased blood in the atria.
-
A parasympathetic reflex initiated by increased blood in the ventricles.
-
A sympathetic reflex initiated by increased blood in the ventricles.
-
A parasympathetic reflex initiated by increased blood in the atria.
Questão 14
Questão
The hormone thyroxin decreases heart rate.
Responda
- True
- False
Questão 15
Questão
Congestive heart failure (CHF) is caused by:
Responda
-
Coronary atherosclerosis
-
Persistent high blood pressure
-
Multiple myocardial infarcts
-
Dilated cardiomyopathy
Questão 16
Questão
Which of these are examples of Congenital Heart Defects?
Responda
-
Ventricular Septal Defect
-
Coarctation of the Aorta
-
Tetralogy of Fallot
-
All of the Above
Questão 17
Questão
The decline in cardiac reserve is an age related change that can affect the heart?
Responda
- True
- False
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