Tag: human body

Questions Related to human body

The skin has an outer layer made up of .......... which is almost impermeable to germs.

zoology human body body defense system drug-target interaction pharmaceutical products and drug action

  1. Keratin

  2. Lipid

  3. Fat

  4. Carbohydrate

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Correct Option: A
Explanation:

The skin is the largest organ of the body, with a surface area of 18 square feet. Its two main layers are the epidermis (outer layer) and dermis (inner layer). The epidermis has several strata (layers) that contain four cell types. Keratinocytes produce keratin, a protein that gives skin its strength and flexibility and waterproofs the skin surface.

So, the correct answer is option A.

Pneumoconiosis is a type of

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. Emphysema

  2. Occupational renal disease

  3. Occupational respiratory disease

  4. Coronary artery disease

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Correct Option: C
Explanation:
  • Pneumoconiosis is a disease of the lungs due to inhalation of dust, characterized by inflammation, coughing, and fibrosis. 
  • Pneumoconiosis is usually considered an occupational respiratory disease, and includes asbestosis, silicosis and coal workers' pneumoconiosis (CWP), also known as "Black Lung Disease."

So, the correct option is 'Occupational respiratory disease'.

Fatal degenerative lung disease caused by particulate asbestos is referred to as

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. asbestosis

  2. asthma

  3. allergy

  4. sinusitis

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Correct Option: A

Asbestosis increases the risk of developing all of the following except

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. Carcinoma of the lungs

  2. Mesotheliomas

  3. Bronchiectasis

  4. Tuberculosis

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Correct Option: D

Number of alveoli in human lung is about

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. One million

  2. More than two millions

  3. More than five millions

  4. More than seven millions

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Correct Option: D
Explanation:

(d) The number of alveoli in human lungs has been estimated to be approximately 750 million, exposing a surface area of nearly 100 $m^2$.

If the lung were punctured, which of the following would happen?

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. The lung would collapse on the side of the puncture.

  2. Both the lung and the chest wall would collapse on the side of the puncture.

  3. Inspiratory signals from medulla become irregular

  4. Interpleural pressure decrease further

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Correct Option: A

Lungs are enclosed in?

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. Periosteum

  2. Perichondrium

  3. Pericardium

  4. Pleural membrane

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Correct Option: A

Which one of the following statements is incorrect?

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. The residual air in lungs slightly decreases the efficiency of respiration in mammals

  2. The presence of non-respiratory air sacs, increases the efficiency of respiration in birds

  3. In insects, circulating body fluids serve to distribute oxygen to tissues

  4. The principle of counter current flow facilities efficient respiration in gills of fishes

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Correct Option: A

State if the following statement is True or False. Correct the False statement.
Our lungs eliminate metabolic wastes like urea from the body.

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. True

  2. False

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Correct Option: A

State if the following statement is True or False. Correct the False statement.
Bile pigments are the excretory products excreted by the lungs.

biology human body respiration in humans mechanism of respiration in animals human lungs

  1. True

  2. False

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Correct Option: A