The Heart (Leaving Cert Biology): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
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Practise the cards
15 cards from this deck
Size of the heart
Size of the heart
Size of a clenched fist
Heart contractions per day
Heart contractions per day
Approximately 100,000 times
Type of muscle tissue in heart
Type of muscle tissue in heart
Cardiac muscle
Protective membrane around heart
Protective membrane around heart
Pericardium
Number of heart chambers
Number of heart chambers
Four chambers
Function of the septum
Function of the septum
Divides heart; keeps oxygenated & deoxygenated blood separate
Reason ventricles have thicker walls than atria
Reason ventricles have thicker walls than atria
Pump blood greater distances
Reason left ventricle wall is thickest
Reason left ventricle wall is thickest
Must pump blood to entire body
Tricuspid valve location & number of flaps
Tricuspid valve location & number of flaps
Between right atrium & ventricle; 3 flaps
Bicuspid valve location & number of flaps
Bicuspid valve location & number of flaps
Between left atrium & ventricle; 2 flaps
LORD memory aid meaning
LORD memory aid meaning
Left Oxygenated, Right Deoxygenated
Name of heart's circulation system
Name of heart's circulation system
Double circulation system
Function of coronary arteries
Function of coronary arteries
Supply oxygen & nutrients to heart muscle
Function of pacemaker (SA node)
Function of pacemaker (SA node)
Controls heart rhythm automatically
Cause of heart sounds (lub-dub)
Cause of heart sounds (lub-dub)
Valve closure