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