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