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CSS - PMS - CCE - PCS - General Science Practice

Human Organs – Major Organs, Functions, Systems & Important Facts MCQs

Study the major organs of the human body, their locations, functions and related organ systems. This topic covers the heart, brain, lungs, liver, kidneys, stomach, intestines, pancreas, spleen, skin and other important organs. Specially prepared for CSS, PMS, CCE, PCS, FPSC, PPSC and General Science competitive exams with exam-focused facts and MCQs.

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Human Organs – Major Organs, Functions, Systems & Important Facts

Human Organs – Major Organs, Functions, Systems & Important Facts MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Organs
Pneumonia primarily affects which organs?
A. Lungs
B. Kidneys
C. Intestines
D. Joints
Read Theory
Correct Answer: A
Pneumonia is an infection or inflammation affecting lung tissue.
CSS - PMS - CCE - PCS - General Science Organs
Hepatitis primarily affects which organ?
A. Liver
B. Stomach
C. Kidney
D. Pancreas
Read Theory
Correct Answer: A
Hepatitis means inflammation of the liver.
CSS - PMS - CCE - PCS - General Science Organs
Nephritis is inflammation of which organ?
A. Kidney
B. Heart
C. Lung
D. Brain
Read Theory
Correct Answer: A
Nephritis refers to inflammation of kidney tissue.
CSS - PMS - CCE - PCS - General Science Organs
Cirrhosis primarily affects which organ?
A. Liver
B. Kidney
C. Lung
D. Spleen
Read Theory
Correct Answer: A
Cirrhosis is chronic scarring and architectural distortion of the liver.
CSS - PMS - CCE - PCS - General Science Organs
A cataract affects which organ?
A. Eye
B. Ear
C. Brain
D. Skin
Read Theory
Correct Answer: A
A cataract is clouding of the eye's lens.
CSS - PMS - CCE - PCS - General Science Organs
A person with a blocked coronary artery has a problem involving blood supply to which organ?
A. Brain
B. Heart
C. Kidney
D. Liver
Read Theory
Correct Answer: B
Coronary arteries supply the heart muscle; blockage may cause myocardial infarction.
CSS - PMS - CCE - PCS - General Science Organs
An insulin deficiency is most directly associated with dysfunction of which organ?
A. Pancreas
B. Liver
C. Spleen
D. Thyroid
Read Theory
Correct Answer: A
Insulin is secreted by beta cells in the pancreatic islets.
CSS - PMS - CCE - PCS - General Science Organs
Dialysis primarily substitutes for the function of which organs?
A. Lungs
B. Kidneys
C. Liver
D. Pancreas
Read Theory
Correct Answer: B
Dialysis partially replaces the kidneys' role in removing wastes and excess fluid.
CSS - PMS - CCE - PCS - General Science Organs
Damage to which organ most directly causes jaundice when bilirubin metabolism is impaired?
A. Liver
B. Heart
C. Brain
D. Bladder
Read Theory
Correct Answer: A
The liver processes and excretes bilirubin; dysfunction can lead to jaundice.
CSS - PMS - CCE - PCS - General Science Organs
Which organ produces intrinsic factor required for vitamin B12 absorption?
A. Stomach
B. Liver
C. Pancreas
D. Colon
Read Theory
Correct Answer: A
Parietal cells of the stomach produce intrinsic factor, essential for vitamin B12 absorption in the ileum.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is responsible for producing surfactant that prevents alveolar collapse?
A. Lungs
B. Liver
C. Kidneys
D. Pancreas
Read Theory
Correct Answer: A
Type II pneumocytes in the lungs produce pulmonary surfactant.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is primarily responsible for maintaining blood filtration and electrolyte balance?
A. Kidneys
B. Liver only
C. Spleen
D. Gallbladder
Read Theory
Correct Answer: A
Kidneys regulate electrolytes, fluid volume and remove metabolic wastes.
CSS - PMS - CCE - PCS - General Science Organs
Which organ converts ammonia into urea?
A. Liver
B. Kidney
C. Lung
D. Stomach
Read Theory
Correct Answer: A
The liver detoxifies ammonia by converting it into urea.
CSS - PMS - CCE - PCS - General Science Organs
Which organ produces most clotting factors?
A. Liver
B. Kidney
C. Spleen
D. Thyroid
Read Theory
Correct Answer: A
Most coagulation factors are synthesized by the liver.
CSS - PMS - CCE - PCS - General Science Organs
Which organ produces most plasma proteins such as albumin?
A. Liver
B. Kidney
C. Spleen
D. Pancreas
Read Theory
Correct Answer: A
The liver synthesizes albumin and many other plasma proteins.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is the main site of red blood cell destruction under normal conditions?
A. Spleen
B. Heart
C. Pancreas
D. Thyroid
Read Theory
Correct Answer: A
The spleen plays a major role in removing aged red blood cells from circulation.
CSS - PMS - CCE - PCS - General Science Organs
Which organs are primarily responsible for excreting urea from the blood?
A. Kidneys
B. Lungs
C. Skin only
D. Pancreas
Read Theory
Correct Answer: A
The kidneys filter urea from the blood and excrete it in urine.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is the main site of urea formation?
A. Liver
B. Kidney
C. Stomach
D. Lung
Read Theory
Correct Answer: A
Urea is synthesized mainly in the liver through the urea cycle and later excreted by the kidneys.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is known as the 'graveyard of red blood cells' in many general science texts?
A. Spleen
B. Kidney
C. Pancreas
D. Thyroid
Read Theory
Correct Answer: A
The spleen removes aged and damaged red blood cells, which is why it is traditionally called the graveyard of RBCs.
CSS - PMS - CCE - PCS - General Science Organs
Which organ is located in the mediastinum between the lungs?
A. Heart
B. Kidney
C. Spleen
D. Liver
Read Theory
Correct Answer: A
The heart occupies the middle mediastinum between the lungs.
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