The Heart (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many circuits make up the double circulatory system?
How many circuits make up the double circulatory system?
Two
Which type of blood does the pulmonary artery carry?
Which type of blood does the pulmonary artery carry?
Deoxygenated blood
Which blood vessel returns oxygenated blood from the lungs to the heart?
Which blood vessel returns oxygenated blood from the lungs to the heart?
Pulmonary vein
Why is the left ventricle wall thicker than the right ventricle wall?
Why is the left ventricle wall thicker than the right ventricle wall?
It pumps to the entire body
How many chambers does the heart have?
How many chambers does the heart have?
Four
What is the main function of valves in the heart?
What is the main function of valves in the heart?
To prevent backflow of blood
What is the function of coronary arteries?
What is the function of coronary arteries?
Supply heart muscle with oxygenated blood
Where is the natural pacemaker of the heart located?
Where is the natural pacemaker of the heart located?
Right atrium
What is the natural resting heart rate in beats per minute?
What is the natural resting heart rate in beats per minute?
Around 70
Why do arteries have thick, muscular walls?
Why do arteries have thick, muscular walls?
To withstand high pressure
Which direction do veins carry blood?
Which direction do veins carry blood?
Towards the heart
How thick are capillary walls?
How thick are capillary walls?
One cell thick