9 – To Investigate the Structures of the Heart (LC 2027) (Leaving Cert Biology): Flashcards
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Practise the cards
15 cards from this deck
Animal heart commonly used for dissection
Animal heart commonly used for dissection
Sheep's or pig's heart
Ventral surface of heart (location & shape)
Ventral surface of heart (location & shape)
Front surface, more rounded
Dorsal surface of heart (location & shape)
Dorsal surface of heart (location & shape)
Back surface, flatter, faces spine
Left ventricle wall texture compared to right
Left ventricle wall texture compared to right
Much firmer and more muscular, thicker walls
Right ventricle wall thickness vs left
Right ventricle wall thickness vs left
Much thinner than left ventricle
Reason left ventricle has thicker walls
Reason left ventricle has thicker walls
Pumps blood throughout entire body
Reason right ventricle has thinner walls
Reason right ventricle has thinner walls
Only pumps blood to lungs
Atria wall thickness
Atria wall thickness
Very thin walls
Coronary blood vessels function
Coronary blood vessels function
Supply heart muscle with oxygen and nutrients
Bicuspid valve location & number of flaps
Bicuspid valve location & number of flaps
Between left atrium & ventricle, two flaps
Tricuspid valve location & number of flaps
Tricuspid valve location & number of flaps
Between right atrium & ventricle, three flaps
Semilunar valves location
Semilunar valves location
At base of pulmonary artery and aorta
Semilunar valve number of flaps
Semilunar valve number of flaps
Three flaps
Septum function
Septum function
Prevents oxygenated & deoxygenated blood from mixing
Tendons (chordae tendineae) function
Tendons (chordae tendineae) function
Hold valve flaps in place