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CARDIAC NURSING QUESTION ANSWERS

1. Which of the following hormones increases the force of contraction of the heart chambers?
  • Aldosterone
  • Luteinising hormone
  • Somatostatin
  • Thyroxine
 Answer: Thyroxine

2. Which valve prevents the backwards flow of blood in to the left atrium?

  • Mitral valve
  • Aortic valve
  • Pulmonary valve
  • Tricuspid valve
Answer: Mitral valve

3.What sort of space exists between the parietal and visceral pericardium?

  • Absolute
  • Virtual 
  • Essential
  • Virtuous

Answer: Virtual

4. The ‘p’ wave on the electrocardiogram corresponds to:

  • Ventricular depolarisation
  • Atrial depolarisation
  • Atrial repolarisation
  • Ventricular repolarisation

Answer: Atrial depolarisation

5. The Frank-Starling Law states:

  • The greater the heart rate the higher the blood pressure.
  • The amount of stretch the ventricle is subject to affects the force of contraction
  • The amount of afterload affects the force of ventricular contraction
  • Cardiac output equals stroke volume times heart rate.

Answer: The greater the heart rate the higher the blood pressure.

6. Gap junctions in the intercalated discs of cardiac muscle cells allow the rapid passage of what?

  • Water
  • Oxygen
  • Calcium
  • Action potentials

Answer: Action potentials

7. The cells of the cardiac conduction system have the ability to create their own action potentials, this is known as:

  • Spontaneity
  • Reflexivity
  • Mechanicity
  • Automaticity

Answer: Automaticity

8.The effect of adrenaline on the heart includes:

  • Increased diastolic time
  • Increased heart rate
  • Increased systolic time
  • Increased relaxation period

Answer: Increased heart rate

9. What effect does increased activity in the parasympathetic nervous system have on the heart:

  • Increase force of contraction
  • Increase heart rate
  • Decrease heart rate
  • Decrease force of contraction

Answer: Decrease heart rate

10. The parasympathetic nervous system innervates the heart via which cranial nerve?

  • Cranial Nerve XII – Hypoglossal nerve
  • Cranial nerve IV – Trochlear nerve
  • Cranial nerve VI – Abducens nerve
  • Cranial nerve X – Vagus nerve

Answer: Cranial nerve X – Vagus nerve
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