9 – To Investigate the Structures of the Heart (LC 2027) (Leaving Cert Biology): Quizzes
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13 questions from this quiz
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Practise the questions
13 questions from this quiz
Why does the left ventricle have much thicker walls than the right ventricle?
Why does the left ventricle have much thicker walls than the right ventricle?
It pumps blood throughout the entire body
How many flaps does the bicuspid valve have?
How many flaps does the bicuspid valve have?
Two flaps
How many flaps does the tricuspid valve have?
How many flaps does the tricuspid valve have?
Three flaps
What is the function of coronary blood vessels?
What is the function of coronary blood vessels?
Supply heart muscle with & nutrients
What is the function of the septum in the heart?
What is the function of the septum in the heart?
Prevents oxygenated & deoxygenated mixing
Which surface of the heart is more rounded?
Which surface of the heart is more rounded?
Ventral surface (front)
Why do the atria have much thinner walls than the ventricles?
Why do the atria have much thinner walls than the ventricles?
They only push blood down to ventricles
How many flaps do semilunar valves have?
How many flaps do semilunar valves have?
Three flaps
What is the function of the tendons (chordae tendineae) in the heart?
What is the function of the tendons (chordae tendineae) in the heart?
Hold valve flaps in place
What is the function of semilunar valves?
What is the function of semilunar valves?
Prevent blood flowing back into ventricles
Which animal hearts are commonly used for heart dissection?
Which animal hearts are commonly used for heart dissection?
Sheep's or pig's heart
Where does the coronary artery begin?
Where does the coronary artery begin?
Just above the aortic valve
What texture difference is felt between the lower left and right sides of the heart?
What texture difference is felt between the lower left and right sides of the heart?
Lower left feels firmer & more muscular