Exercise and Heart Rate

Flashcard
•
Biology, Science
•
7th - 9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What causes the 'lub' sound of our heart beat?
Back
The closing of the tricuspid and bicuspid valve as the ventricles contract.
2.
FLASHCARD QUESTION
Front
What causes the 'dub' sound of our heart beat?
Back
The closing of the pulmonary and aortic valves when the pressure in the ventricles is lower than in the arteries.
3.
FLASHCARD QUESTION
Front
Where does the 'lub dub' of a heart beat come from?
Back
The sound of blood being pushed against closed, one-way valves.
4.
FLASHCARD QUESTION
Front
What is the maximum heart rate for a young adult?
Back
~200 beats per minute.
5.
FLASHCARD QUESTION
Front
What is a heart beat?
Back
The sound made by the heart as it pumps blood, often referred to as 'lub dub'.
6.
FLASHCARD QUESTION
Front
What is the role of the heart valves?
Back
To prevent backflow of blood and ensure it flows in one direction.
7.
FLASHCARD QUESTION
Front
What is the function of the ventricles in the heart?
Back
To pump blood out of the heart to the lungs and the rest of the body.
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