Frequently Asked MCQ quiz on the Body Fluids and Circulation Questions with Answers – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.

Which of the following is not a component of blood?

A) Platelets

B) Plasma

C) Red blood cells

D) Insulin

Answer: D) Insulin

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What is the primary function of plasma in blood?

A) Transport of oxygen

B) Defense against pathogens

C) Regulation of body temperature

D) Transport of nutrients and waste products

Answer: D) Transport of nutrients and waste products

Which of the following is responsible for clotting of blood?

A) Platelets

B) White blood cells

C) Red blood cells

D) Plasma

Answer: A) Platelets

What percentage of blood is composed of plasma?

A) Approximately 50%

B) Approximately 60%

C) Approximately 70%

D) Approximately 90%

Answer: C) Approximately 70%

Which of the following is NOT a type of white blood cell?

A) Neutrophil

B) Erythrocyte

C) Lymphocyte

D) Monocyte

Answer: B) Erythrocyte

Which blood component is primarily responsible for carrying oxygen?

A) Red blood cells

B) Platelets

C) Plasma

D) White blood cells

Answer: A) Red blood cells

What is the average lifespan of a red blood cell in circulation?

A) 10 days

B) 30 days

C) 60 days

D) 120 days

Answer: D) 120 days

Which of the following statements about lymph is true?

A) It contains mainly red blood cells.

B) It is a component of blood plasma.

C) It is formed from excess tissue fluid.

D) It has no role in the immune system.

Answer: C) It is formed from excess tissue fluid.

Which of the following is NOT a function of lymph nodes?

A) Filtering lymph

B) Production of red blood cells

C) Immune response initiation

D) Removal of foreign particles and bacteria

Answer: B) Production of red blood cells

What is the function of cerebrospinal fluid?

A) Transporting oxygen to the brain

B) Providing mechanical support and protection to the brain

C) Regulating blood sugar levels

D) Digesting nutrients in the brain

Answer: B) Providing mechanical support and protection to the brain

Where is synovial fluid found in the body?

A) In the blood vessels

B) In the joints

C) In the digestive system

D) In the respiratory system

Answer: B) In the joints

Which of the following is NOT a function of saliva?

A) Digesting carbohydrates

B) Lubricating food for swallowing

C) Neutralizing stomach acid

D) Producing red blood cells

Answer: D) Producing red blood cells

What is the primary component of tears?

A) Water

B) Mucus

C) Salts

D) Enzymes

Answer: A) Water

Which gland produces sebum, an oily substance that lubricates the skin and hair?

A) Salivary gland

B) Sebaceous gland

C) Sweat gland

D) Thyroid gland

Answer: B) Sebaceous gland

Which of the following is NOT a function of sweat?

A) Regulating body temperature

B) Removing waste products

C) Lubricating joints

D) Moistening the skin

Answer: C) Lubricating joints

Where is bile produced?

A) Liver

B) Stomach

C) Pancreas

D) Gallbladder

Answer: A) Liver

Which of the following is NOT a component of bile?

A) Water

B) Cholesterol

C) Bile salts

D) Insulin

Answer: D) Insulin

What is the primary function of bile?

A) Digesting proteins

B) Emulsifying fats

C) Regulating blood sugar levels

D) Transporting oxygen

Answer: B) Emulsifying fats

Which of the following is NOT a component of pancreatic juice?

A) Amylase

B) Lipase

C) Pepsin

D) Trypsin

Answer: C) Pepsin

What is the function of pancreatic juice?

A) Breaking down carbohydrates

B) Breaking down proteins

C) Breaking down fats

D) All of the above

Answer: D) All of the above

Where is gastric juice produced?

A) Liver

B) Gallbladder

C) Stomach

D) Pancreas

Answer: C) Stomach

Which of the following is NOT a component of gastric juice?

A) Pepsin

B) Hydrochloric acid

C) Bile

D) Mucus

Answer: C) Bile

What is the primary function of hydrochloric acid in gastric juice?

A) Emulsifying fats

B) Breaking down proteins

C) Regulating blood sugar levels

D) Transporting oxygen

Answer: B) Breaking down proteins

Which of the following is NOT a function of mucus in the stomach?

A) Protecting the stomach lining from acid

B) Lubricating food for swallowing

C) Absorbing nutrients

D) Facilitating movement of food

Answer: C) Absorbing nutrients

Where is bile stored before being released into the small intestine?

A) Pancreas

B) Liver

C) Gallbladder

D) Stomach

Answer: C) Gallbladder

Which of the following is the primary component of blood plasma?

A) Red blood cells

B) White blood cells

C) Platelets

D) Water

Answer: D) Water

What is the primary function of red blood cells?

A) Transporting oxygen

B) Fighting infection

C) Clotting blood

D) Carrying nutrients

Answer: A) Transporting oxygen

Which blood vessels carry blood away from the heart?

A) Veins

B) Capillaries

C) Arteries

D) Venules

Answer: C) Arteries

What is the role of hemoglobin in red blood cells?

A) Fighting infection

B) Carrying oxygen

C) Producing antibodies

D) Breaking down toxins

Answer: B) Carrying oxygen

Which of the following is NOT a type of white blood cell?

A) Neutrophil

B) Lymphocyte

C) Erythrocyte

D) Monocyte

Answer: C) Erythrocyte

What is the main function of platelets in the blood?

A) Carrying oxygen

B) Clotting

C) Fighting infection

D) Transporting nutrients

Answer: B) Clotting

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