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Breathing and Exchange of Gases Test 31

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Breathing and Exchange of Gases Test 31
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  • Question 1
    1 / -0
    In human beings, lungs are divided into 
    Solution
    Lungs are the respiratory organs which is located in the thoracic cavity. The lungs are covered by the pleural membrane. The right lobe has three lobes, an upper, middle, and a lower, by two fissures, one oblique and one horizontal while the left lung is divided into two lobes, an upper and a lower, by the oblique fissure. The space between the membranes of the lungs is known as pleural cavity which is filled by pleural fluid.

  • Question 2
    1 / -0
    Respiration in adult frog is
    Solution
    In adult frog, due to its amphibious mode of life, respiration occurs through the skin (cutaneous respiration), lining of the buccopharyngeal cavity (buccal respiration) and the lungs (pulmonary respiration). Ordinary respiratory requirements are met by the skin and buccopharyngeal cavity, lungs are used only when the need for oxygen is great. 
    So, the correct answer is 'All the above'.
  • Question 3
    1 / -0
    ______ is the lung related disease.
    Solution
    Silicosis is a form of occupational lung diseases a form of caused by inhalation of crystalline silica dust and is marked by inflammation and scarring in the form of nodular lesions in the upper lobes of the lungs.

    It is a type of pneumoconiosis.

    Hence the option A is correct.
  • Question 4
    1 / -0
    In human beings, rib case and sternum move upwardly and outwardly during.
    Solution
    As the rib cage and sternum (breast bone) move upward and outward, the thoracic volume would increase and with this the pulmonary volume would also increase. This would create a negative pressure gradient in lungs, which would mean pressure in lungs less than the atmosphere. Thus, inspiration would happen. Hence, Option D is correct.
  • Question 5
    1 / -0
    Adam's Apple corresponds to which of the following?
    Solution
    • The Adam's apple is also called the laryngeal prominence.
    • It is a feature of the human neck and is referred to as the lump or protrusion that is formed by the angle of the thyroid cartilage surrounding the larynx.
    Hence, the correct answer is option C. 
  • Question 6
    1 / -0
    One of the following is a difference between pulmonary respiration of frog and human.
  • Question 7
    1 / -0
    Bicarbonate of pancreatic juice is secreted by.
  • Question 8
    1 / -0
    In mammals ventilation movements of lungs are governed by.
    Solution
    1. The relaxation and contraction of the diaphragm,
    2. and the movement of the intercostal muscles present in the thorax of an individual are responsible for the ventilation movements of the lungs that facilitate respiration.
    Hence, Option D is correct.
  • Question 9
    1 / -0
    Number of alveoli in the two human lungs is _______.
    Solution
    Alveoli are the basic unit of ventilation. The number of alveoli is a key structural determinant of lung architecture. Alveolar number is closely related to total lung volume, with larger lungs having considerably more alveoli, ranging from 600-800 million. 
    So, the correct option is '600-800 million'.
  • Question 10
    1 / -0
    Common passage for swallowing food and breathing is
    Solution
    The oral cavity leads into pharynx. It is a common passage for food and breathing. Pharyx leads into oesophagus (food pipe). Glottis is the opening of wind pipe, which is covered by epiglottis for prevention of entry of food. Thus, Option B is correct.
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