1. Which of the following hormones increases the force of contraction of the heart chambers?
2. Which valve prevents the backwards flow of blood in to the left atrium?
3.What sort of space exists between the parietal and visceral pericardium?
Answer: Virtual
4. The ‘p’ wave on the electrocardiogram corresponds to:
Answer: Atrial depolarisation
5. The Frank-Starling Law states:
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?
Answer: Action potentials
7. The cells of the cardiac conduction system have the ability to create their own action potentials, this is known as:
Answer: Automaticity
8.The effect of adrenaline on the heart includes:
Answer: Increased heart rate
9. What effect does increased activity in the parasympathetic nervous system have on the heart:
Answer: Decrease heart rate
10. The parasympathetic nervous system innervates the heart via which cranial nerve?
Answer: Cranial nerve X – Vagus nerve
- Aldosterone
- Luteinising hormone
- Somatostatin
- Thyroxine
2. Which valve prevents the backwards flow of blood in to the left atrium?
- Mitral valve
- Aortic valve
- Pulmonary valve
- Tricuspid 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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