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100 GK Questions About Human Body with Answers
By Karan Singh Bisht
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Updated on 6 Aug 2025, 13:05 IST
Understanding the human body is essential for students, competitive exam aspirants, and quiz enthusiasts. This set of 100 GK questions about the human body with answers is a quick and easy way to improve your general awareness and science knowledge. Whether you're preparing for a human body quiz with answers or simply want to revise general knowledge about human body systems, these human body gk questions are perfect for you.
This collection includes one-word answer questions covering all major aspects of human anatomy and physiology, such as bones, organs, blood, and the nervous system. These gk questions about human body with answers are especially useful for those preparing for school exams, Olympiads, government job tests, and entrance exams where human body general knowledge questions often appear.
If you're looking for a quick revision of gk about human body, this list has been curated just for you. It covers human body related gk questions that are frequently asked in various quizzes and exams. Practicing such human body questions and answers can help improve memory retention and boost your performance. Let’s explore these gk questions about human body and test how well you know your body one word at a time.
100 Human Body GK Questions and Answers
Q. Which is the longest bone in the human body?
Ans. Femur
Q. What is the hardest substance in the human body?
Ans. Enamel
Q. Which organ purifies blood?
Ans. Kidney
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Q. How many chambers are there in the human heart?
Ans. Four
Q. Which is the largest organ in the human body?
Ans. Skin
Q. What is the smallest bone in the human body?
Ans. Stapes
Q. Which blood cells help in clotting?
Ans. Platelets
Q. What connects muscles to bones?
Ans. Tendon
Q. What is the normal pH of human blood?
Ans. 7.4
Q. Which organ is responsible for digestion of fats?
Ans. Liver
Q. What is the basic unit of the brain?
Ans. Neuron
Q. Which blood group is known as the universal donor?
Ans. O-negative
Q. Which blood group is known as the universal recipient?
Ans. AB-positive
Q. What part of the eye controls the amount of light that enters?
Ans. Iris
Q. Which part of the brain controls balance?
Ans. Cerebellum
Q. What pigment gives skin its color?
Ans. Melanin
Q. Which gland is known as the master gland?
Ans. Pituitary
Q. Which vitamin is synthesized in the skin with sunlight?
Ans. D
Q. Which is the largest artery in the human body?
Ans. Aorta
Q. What type of joint is the shoulder joint?
Ans. Ball-and-socket
Q. Which organ helps in the production of insulin?
Ans. Pancreas
Q. Which blood cells fight infections?
Ans. WBCs
Q. What is the main function of red blood cells?
Ans. Oxygen
Q. What is the total number of bones in an adult human?
Ans. 206
Q. How many pairs of ribs are in the human body?
Ans. 12
Q. What is the outer layer of skin called?
Ans. Epidermis
Q. Which muscle is found only in the heart?
Ans. Cardiac
Q. What is the fluid part of blood called?
Ans. Plasma
Q. Which organ controls all other organs?
Ans. Brain
Q. Which system removes waste from the body?
Ans. Excretory
Q. Which gas do we breathe in for survival?
Ans. Oxygen
Q. What gas is exhaled from the lungs?
Ans. Carbon-dioxide
Q. Which organ is mainly responsible for respiration?
Ans. Lungs
Q. Which bone protects the brain?
Ans. Skull
Q. Which organ is responsible for filtering toxins?
Ans. Liver
Q. What is the main function of the small intestine?
Ans. Absorption
Q. Which part of the brain is responsible for thinking?
Ans. Cerebrum
Q. What part of the body contains the ulna?
Ans. Arm
Q. How many teeth does an adult human usually have?
Ans. 32
Q. Which type of blood cell carries oxygen?
Ans. RBCs
Q. Which organ pumps blood throughout the body?
Ans. Heart
Q. What type of tissue connects bones together?
Ans. Ligament
Q. Which hormone regulates sugar levels in blood?
Ans. Insulin
Q. Which part of the body contains the femur?
Ans. Thigh
Q. What part of the body contains alveoli?
Ans. Lungs
Q. Which is the longest muscle in the human body?
Ans. Sartorius
Q. Which organ stores bile?
Ans. Gallbladder
Q. What is the function of the diaphragm?
Ans. Breathing
Q. Which organ is part of both the digestive and endocrine system?
Ans. Pancreas
Q. What is the primary function of the kidney?
Ans. Filtration
Q. Which gland is located in the neck?
Ans. Thyroid
Q. Which bone forms the forehead?
Ans. Frontal
Q. What is the name of the shoulder blade bone?
Ans. Scapula
Q. Which bone is also known as the collarbone?
Ans. Clavicle
Q. Which type of muscle works involuntarily?
Ans. Smooth
Q. Which system controls body functions through hormones?
Ans. Endocrine
Q. Which blood component helps in clotting?
Ans. Platelets
Q. How many kidneys does a healthy human have?
Ans. Two
Q. What is the smallest unit of life?
Ans. Cell
Q. What is the function of hemoglobin?
Ans. Oxygen-carrying
Q. Where are taste buds located?
Ans. Tongue
Q. Which part of the ear helps in balance?
Ans. Inner-ear
Q. What is the natural pacemaker of the heart?
Ans. SA-node
Q. Which vitamin is essential for blood clotting?
Ans. K
Q. What is the transparent front part of the eye called?
Ans. Cornea
Q. Which structure connects the fetus and mother?
Ans. Placenta
Q. Which part of the eye helps focus light?
Ans. Lens
Q. How many senses does a human have?
Ans. Five
Q. Which hormone is responsible for growth?
Ans. GH
Q. What is the function of the large intestine?
Ans. Water-absorption
Q. Which part of the body contains the tibia?
Ans. Leg
Q. Which protein is found in hair and nails?
Ans. Keratin
Q. Which organ is responsible for producing urine?
Ans. Kidney
Q. What is the tube that connects mouth to stomach?
Ans. Esophagus
Q. Which part of the brain controls involuntary actions?
Ans. Medulla
Q. Which organ is responsible for sound production?
Ans. Larynx
Q. What structure carries urine from kidney to bladder?
Ans. Ureter
Q. Which type of cell is involved in immunity?
Ans. Lymphocyte
Q. What is the largest part of the brain?
Ans. Cerebrum
Q. Which bone is found in the lower leg?
Ans. Fibula
Q. What is the color of oxygenated blood?
Ans. Red
Q. Which mineral is important for healthy bones?
Ans. Calcium
Q. Which sense organ detects smell?
Ans. Nose
Q. Which system includes the skin, hair, and nails?
Ans. Integumentary
Q. What is the structural unit of kidney?
Ans. Nephron
Q. What part of the body regulates temperature?
Ans. Hypothalamus
Q. Which cell organelle produces energy?
Ans. Mitochondria
Q. Which system includes heart and blood vessels?
Ans. Circulatory
Q. Which muscle helps in breathing?
Ans. Diaphragm
Q. What is the normal human body temperature (°C)?
Ans. 37
Q. What organ produces tears?
Ans. Lacrimal
Q. Which body part contains phalanges?
Ans. Fingers
Q. What pigment is found in red blood cells?
Ans. Hemoglobin
Q. Which organ allows us to see?
Ans. Eye
Q. Which sense is controlled by the cochlea?
Ans. Hearing
Q. Which part of the nervous system includes the brain?
Ans. Central
Q. What tissue covers the body surface?
Ans. Epithelial
Q. What is the basic unit of heredity?
Ans. Gene
Q. Which part of the cell contains DNA?
Ans. Nucleus
Q. Which gland controls metabolism?
Ans. Thyroid
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FAQs on Human Body Quiz With Answers
What are the main parts of the human body?
Head, neck, torso, arms and legs are the main parts of the human body.
What are the 11 major systems of the body?
11 major organ systems of our human body are the integumentary system (skin), skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems.
What are the 12 systems of the human body?
12 system of the human body are- Integumentary System, Skeletal System, Muscular System, Nervous System, Endocrine System, Cardiovascular System, Lymphatic System, Respiratory System, Digestive System, Urinary System, and Reproductive System (Female and Male).
How many bones in a human body?
The adult human skeleton is made up of 206 bones.