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level: Level 1

Questions and Answers List

Question	Answer
An increased firing of the parasympathetic nervous system causes increased cardiac output.	False
What is the terminal portion of the ventricular conduction system?	Purkinje fibers
What sets the pace at which the heart beats?	Sinoatrial node
Which hormone would increase cardiac output?	Epinephrine / Adrenaline
Which hormone would increase cardiac output?	Thyroid hormone
Bradycardia is:	Abnormally slow heart rate
Which of the following is the correct order of electrical conduction?	sinoatrial node, atrioventricular node, bundle of HIS, bundle branches, Purkinje fibers
Pulmonary Veins	transport oxygenated blood to the heart
Fibrillation is:	Irregular, twitching heart beat
Fibrillation might be treated by:	Defibrillator
This artery is often blocked by plaque?	Coronary
Heart block is:	Delay in relaying impulses from the sinoatrial node to atrioventricular node
Ischemia is:	Inadequate oxygen supply to a tissue or organ
This molecule is responsible for coronary plaque accumulation?	Cholesterol
Plaque in the coronary artery might be treated by:	Bypass or angioplasty
Tachycardia is:	Abnormally fast heart rate
Which nerves stimulates a decrease in heart rate?	Vagus nerve
Which nerves stimulates an increase in heart rate?	Sympathetic (cardiac) nerve
Which of these transmits impulses from the sinoatrial node to the left atrium?	Bachmann’s bundle
Which part of the brain regulates heart rate?	Medulla oblongata
What are the flaps covering the atria called?	Auricles