Circulatory Systems in Animals (Grade 10 NSC Matric Life Sciences): Quizzes
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Practise the questions
10 questions from this quiz
What is the key difference between open and closed circulatory systems?
What is the key difference between open and closed circulatory systems?
Blood bathes organs vs stays in vessels
How many chambers does a fish heart have compared to a mammal heart?
How many chambers does a fish heart have compared to a mammal heart?
2 chambers vs 4 chambers
Why does the left ventricle have the thickest muscular wall?
Why does the left ventricle have the thickest muscular wall?
Must pump blood to entire body
Which blood vessel is the exception to the rule about what arteries carry?
Which blood vessel is the exception to the rule about what arteries carry?
Pulmonary artery carries deoxygenated
Where is the tricuspid valve located in the heart?
Where is the tricuspid valve located in the heart?
Between right atrium and ventricle
How long does one complete cardiac cycle take at rest?
How long does one complete cardiac cycle take at rest?
0.8 seconds
What causes the 'lubb' heart sound during the cardiac cycle?
What causes the 'lubb' heart sound during the cardiac cycle?
Tricuspid & bicuspid valves closing
What is the function of the SA node in the heart?
What is the function of the SA node in the heart?
Acts as natural pacemaker
In a blood pressure reading of 120/80 mmHg, what does the 120 represent?
In a blood pressure reading of 120/80 mmHg, what does the 120 represent?
Systolic pressure when ventricles contract
What is the wall structure of capillaries that enables efficient material exchange?
What is the wall structure of capillaries that enables efficient material exchange?
Single layer of endothelial cells