Human Body Organs Mcqs

1- Which is the largest internal organ in the human body ?

A. Heart
B. Liver
C. Lungs
D. Brain

Answer : B. Liver

2- The organ responsible for pumping blood throughout the body is ?

A. Brain
B. Lungs
C. Kidney
D. Heart

Answer : D. Heart

3- Which organ is known as the "control center" of the body ?

A. Brain
B. Heart
C. Liver
D. Kidney

Answer : A. Brain

4- The human body has how many kidneys ?

A. One
B. Two
C. Three
D. Four

Answer : B. Two

5- The function of the small intestine is to ?

A. Store bile
B. Absorb nutrients
C. Filter waste
D. Produce insulin

Answer : B. Absorb nutrients

6- Which organ detoxifies harmful substances in the blood ?

A. Spleen
B. Kidney
C. Liver
D. Pancreas

Answer : C. Liver

7- The largest bone in the human body is located in which organ system ?

A. Nervous system
B. Muscular system
C. Skeletal system
D. Digestive system

Answer : C. Skeletal system

8- The skin is considered the __________ organ of the human body.

A. Largest
B. Weakest
C. Most sensitive
D. Smallest 

Answer : A. Largest

9- Which organ produces insulin ?

A. Liver
B. Kidney
C. Pancreas
D. Spleen 

Answer : C. Pancreas

10- The lungs are primarily responsible for ?

A. Filtering blood
B. Oxygen exchange
C. Pumping blood
D. Producing hormones

Answer : B. Oxygen exchange

11- What is the main function of the kidneys ?

A. Producing bile
B. Filtering blood and removing waste
C. Breaking down food
D. Regulating body temperature

Answer : B. Filtering blood and removing waste

12- The human brain is divided into how many main parts ?

A. One
B. Two
C. Three
D. Four

Answer : C. Three (Cerebrum, Cerebellum, and Brainstem)

13- The stomach secretes which type of acid to help in digestion ?

A. Hydrochloric acid
B. Acetic acid
C. Sulfuric acid
D. Nitric acid

Answer : A. Hydrochloric acid

14- Which organ is part of both the digestive and endocrine systems ?

A. Kidney
B. Spleen
C. Liver
D. Pancreas

Answer : D. Pancreas

15- Which organ is responsible for producing red blood cells ?

A. Heart
B. Liver
C. Bone marrow
D. Spleen

Answer : C. Bone marrow

16- Which part of the brain controls balance and coordination ?

A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus

Answer : B. Cerebellum

17- The central nervous system (CNS) consists of ?

A. Brain and spinal cord
B. Brain and nerves
C. Spinal cord and nerves
D. Heart and lungs

Answer : A. Brain and spinal cord

18- The hypothalamus is responsible for regulating ?

A. Blood circulation
B. Body temperature and hunger
C. Reflex actions
D. Oxygen supply

Answer : B. Body temperature and hunger

19- Which part of the brain is responsible for memory and thinking ?

A. Medulla
B. Cerebellum
C. Cerebrum
D. Thalamus

Answer : C. Cerebrum

20- The spinal cord is protected by ?

A. Skull
B. Vertebral column
C. Ribs
D. Pelvis

Answer : B. Vertebral column

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