Heart and Lungs

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Where in the brain is the cardiovascular centre?
Medulla
1 of 15
Give examples of stimuli that would increase heart rate
Stress, adrenalin, emotions, caffeine, exercise - build up of lactic acid or carbon dioxide
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Where in the body is blood pressure monitored?
Carotid arteries - baroreceptors
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What is the equation for calculating cardiac output?
Cardiac volume x heart rate
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What are the two parts of the autonomic nervous system?
Sympathetic and parasympathetic
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Which part of the autonomic system increases heart rate?
Sympathetic
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Where in the heart does the heartbeat originate?
SAN
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What is the purpose of the bundle of His and the purkinje fibres?
Rapidly carry impulses to the bottom of the ventricles so contraction is bottom up - most efficient heartbeat
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What is the name of the volume of air that remains in the lungs?
Residual volume
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Define "vital capacity"
Maximum volume of air you can breathe out in one breath. Total of the tidal volume and inspiratory and expiratory reserves
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Where is the respiratory centre?
Medulla
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What muscles are used in breathing?
Intercostal muscles and diaphragm
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What stimulates the respiratory centre to stop sending impulses to the breathing muscles to contract?
The stretch receptors in the bronchi walls and decreasing levels of carbon dioxide in the blood
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Where is the concentration of carbon dioxide in the blood monitored?
Chemoreceptors in the aortic body and cardiac body
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How do we acclimatise to high altitude?
Ventilation of lungs increase, more red blood cells produced and increase in oxygen carrying capacity
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Card 2

Front

Give examples of stimuli that would increase heart rate

Back

Stress, adrenalin, emotions, caffeine, exercise - build up of lactic acid or carbon dioxide

Card 3

Front

Where in the body is blood pressure monitored?

Back

Preview of the front of card 3

Card 4

Front

What is the equation for calculating cardiac output?

Back

Preview of the front of card 4

Card 5

Front

What are the two parts of the autonomic nervous system?

Back

Preview of the front of card 5
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