21. The strongest muscle in the human body is _____.
The masseter (jaw muscle) is the strongest based on force, capable of exerting up to 200 pounds of pressure on the molars.
22. The longest muscle in the human body is ____.
The sartorius muscle is the longest muscle, stretching from the hip to the knee, important in leg flexion and rotation.
23. Which element is present in the largest amount in the human body?
Oxygen makes up about 65% of body mass, mostly due to water and organic molecules.
24. The percentage of water in the human body is ____.
The human body is about 60–70% water, essential for metabolism, circulation, and temperature regulation.
25. How many pairs of spinal nerves are in the human body?
There are 31 pairs of spinal nerves, responsible for transmitting signals between the spinal cord and body.
26. The volume of blood in a human body is ____.
The average adult human has about 5–6 litres of blood, varying with body size and sex.
27. The most common blood type in humans is ____.
Globally, O+ is the most common blood type, followed by A+. Both together make up the majority of blood groups.
28. The least common blood type in humans is ____.
AB- is the rarest blood type in humans, present in less than 1% of the global population.
29. The largest part of the brain is called ____.
The cerebrum is the largest brain part, responsible for higher brain functions like thought, memory, and voluntary actions.
30. Which gland is a dual gland (both endocrine and exocrine)?
The pancreas functions as a dual gland: it secretes digestive enzymes (exocrine) and hormones like insulin (endocrine).
31. The largest cell by volume in the human body is _____.
The ovum (female egg cell) is the largest human cell by volume, visible to the naked eye (~0.1 mm in diameter).
32. The longest cell in the human body is _____.
Nerve cells (neurons) can be over a meter long, especially motor neurons extending from the spinal cord to toes.
33. The gestation period in humans is ____.
The average human gestation period is about 267 days (≈38 weeks), though pregnancies are often measured as 280 days from the last menstrual period.
34. The largest artery in the human body is known as _____.
The aorta is the largest artery, carrying oxygen-rich blood from the heart to the body.
35. The largest vein in the human body is _____.
The inferior vena cava is the largest vein, carrying deoxygenated blood from the lower body to the heart.
36. The longest muscle in the human body ____.
The sartorius is the longest muscle, running diagonally across the thigh, aiding in hip and knee movements.
37. The largest gland in the human body is ____.
The liver is the largest gland, vital for detoxification, metabolism, and bile production.
38. The mass of the human brain is ____.
The human brain weighs about 1.4 kg on average, though it varies slightly by age, sex, and body size.
39. The mass of the human liver is _____.
The liver usually weighs 1.4–1.8 kg, making it the largest internal organ and gland in the human body.
40. The mass of the human heart is ____.
The human heart weighs about 340 g in men and 250 g in women, with slight variations due to body size and health.
41. _____ kidney is lower in the human body.
The right kidney lies slightly lower than the left, due to the space occupied by the liver.
42. Which lung is larger in the human body?
The right lung is larger with 3 lobes, while the left lung has only 2 lobes to make room for the heart.
43. How many joints are there in the human body?
The human body has about 230 joints, including movable, slightly movable, and immovable types.
44. The length of the small intestine in humans is _____.
The human small intestine is about 25 feet (7.62 m) long, responsible for nutrient absorption.
45. The pH of human blood is ____.
Normal blood pH is tightly regulated between 7.3 and 7.4, slightly alkaline.
General Science questions are an essential part of every competitive examination. Among them, facts about the Human Body have frequently appeared in previous tests conducted by various institutions. General Science remains an inevitable area where a candidate’s general knowledge is thoroughly assessed. Hence, it becomes vital for aspirants to be well-versed in important facts about the Human Body. With this in mind, we have carefully prepared a comprehensive set of MCQs on this topic, enabling candidates to practice effectively for questions that are likely to appear in upcoming examinations, as they have consistently featured in many past exams.
