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Health Hero Quizzes and Trivia Questions
Health Hero introduces the human body, hygiene, nutrition, and movement through factual learning questions. Start with the heart: understand its chambers, valves, and electrical rhythm. These anatomy examples explain how the body works and are intended for general education.
What you can explore
Major Health Hero subtopics
- Human body
- Hygiene
- Nutrition
- Fitness and movement
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Health Hero questions and answers
Try each question before opening its answer and explanation.
1. How many chambers does the human heart have?
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2. What are the heart's upper chambers called?
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3. What are the heart's lower chambers called?
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Answer: Ventricles
The right and left ventricles pump blood out of the heart.
Source: NIH NHLBI: heart anatomy
4. What helps prevent blood flowing backward inside the heart?
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Answer: Heart valves
The valves open and close as the heart pumps.
Source: NIH NHLBI: how the heart beats
5. What coordinates the timing of a heartbeat?
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Answer: Electrical signals
The heart's electrical system coordinates contraction of its chambers.
Source: NIH NHLBI: how the heart beats
6. What is the heart's natural pacemaker commonly called?
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Answer: The sinoatrial node, or SA node
This group of cells starts the electrical signal for a normal heartbeat.
Source: NIH NHLBI: how the heart beats
Keep practising
More Health Hero practice questions
These questions come from the live QZify category pool. The selection refreshes periodically.
1. Which disease are the RTS,S and R21 vaccines designed to help prevent?
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Answer: Malaria
2. Rhinoplasty is a surgical procedure on what part of the human body?
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Answer: Nose
3. How many doses are in the WHO-recommended malaria vaccine schedule for children?
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Answer: Four
4. Alzheimer's disease primarily affects which part of the human body?
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Answer: Brain
5. What is the typical full-dose schedule for the MVA-BN mpox vaccine?
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Answer: Two doses 28 days apart
6. The human heart has how many chambers?
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Answer: 4
7. Muscle fibres contain bundles of long organelles called what?
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Answer: Myofibrils
8. Which of these is the scientific term for "Brain Freeze"?
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Answer: Sphenopalatine Ganglioneuralgia
9. Mpox virus belongs to which virus genus?
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Answer: Orthopoxvirus
10. How many chromosomes are in your body cells?
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Answer: 23
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