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Human Body Quiz

Q: How many bones are there in the adult human body?

206 — The adult human skeleton contains 206 bones, though babies are born with around 270-300 bones that gradually fuse together during childhood and adolescence.

Q: Which organ produces insulin to regulate blood sugar levels?

Pancreas — The pancreas produces insulin in clusters of cells called the islets of Langerhans, and insufficient insulin production or response leads to diabetes.

Q: What is the normal resting heart rate range for a healthy adult?

60–100 bpm — The NHS considers a resting heart rate of 60–100 beats per minute normal for adults, though well-trained athletes may have a lower resting rate of 40–60 bpm.

Q: Which blood type is known as the universal donor for red blood cells?

O negative — O negative blood lacks both ABO and Rh antigens on the red blood cells, making it safe to transfuse to patients of any blood type in an emergency.

Q: What is the largest organ in the human body?

Skin — The skin is the largest organ, covering about 1.5–2 square metres in adults and accounting for roughly 15% of total body weight.

Q: How long is the small intestine in the average adult?

About 6 metres — The small intestine measures approximately 6 metres in length and is where the majority of nutrient absorption takes place during digestion.

Q: Which part of the brain is responsible for coordinating balance and fine motor movement?

Cerebellum — The cerebellum, located at the back of the brain, coordinates voluntary muscle movements, posture, and balance, and receives input from sensory systems and the spinal cord.

Q: Approximately how many litres of blood does the adult human body contain?

4–5 litres — An average adult body contains approximately 4.5–5.5 litres of blood, which the heart pumps around the body roughly once per minute at rest.

Q: What does the acronym BMI stand for in the context of NHS health assessments?

Body Mass Index — BMI (Body Mass Index) is calculated by dividing a person's weight in kilograms by the square of their height in metres, and the NHS uses it as a screening tool for healthy weight ranges.

Q: Which mineral is most important for building and maintaining strong bones and teeth?

Calcium — Calcium is the most abundant mineral in the body and is essential for bone and tooth formation; the NHS recommends adults consume 700mg of calcium per day.

Anatomy, health and how your body works — the ultimate biology test.

12 questions · ~6 mins ·

Question 1 of 12

1. How many bones are there in the adult human body?

2. Which organ produces insulin to regulate blood sugar levels?

3. What is the normal resting heart rate range for a healthy adult?

4. Which blood type is known as the universal donor for red blood cells?

5. What is the largest organ in the human body?

6. How long is the small intestine in the average adult?

7. Which part of the brain is responsible for coordinating balance and fine motor movement?

8. Approximately how many litres of blood does the adult human body contain?

9. What does the acronym BMI stand for in the context of NHS health assessments?

10. Which mineral is most important for building and maintaining strong bones and teeth?

11. The human eye contains two types of photoreceptor cells — rods and cones. What are cones primarily responsible for?

12. What is the medical term for the kneecap?

Human Body Quiz

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