Human Physiology UPSC Questions

Biology

Human Physiology MCQ Questions


1.
What is the primary site for the exchange of gases in human beings?
A.
Trachea
B.
Bronchi
C.
Alveoli
D.
Pharynx
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ANSWER :
C. Alveoli
2.
Which of the following are the reasons for the occurrence of multi-drug resistance in microbial pathogens in India?
1. Genetic predisposition of some people
2. Taking incorrect doses of antibiotics to cure diseases
3. Using antibiotics in livestock farming
4. Multiple chronic diseases in some people
Select the correct answer using the code given below:
UPSC - 2019
A.
1 and 2 only
B.
2 and 3 only
C.
1,3 and 4
D.
2,3 and 4
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ANSWER :
B. 2 and 3 only
3.
Which structure prevents the entry of food into the larynx during swallowing?
A.
Glottis
B.
Epiglottis
C.
Pharynx
D.
Trachea
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ANSWER :
B. Epiglottis
4.
What is the average tidal volume in a healthy human?
A.
1000 mL
B.
1500 mL
C.
500 mL
D.
750 mL
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ANSWER :
C. 500 mL
5.
Which one of the following statements best describes the role of B cells and T cells in the human body?
UPSC - 2022
A.
They protect the body from environmental allergens.
B.
They alleviate the body's pain and inflammation.
C.
They act as immunosuppressants in the body.
D.
They protect the body from the diseases caused by pathogens.
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ANSWER :
D. They protect the body from the diseases caused by pathogens.
6.
Which muscle's contraction increases thoracic volume during inspiration?
A.
Diaphragm
B.
Intercostal
C.
Abdominal
D.
Pectoral
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ANSWER :
A. Diaphragm