Section Date 4 Where is the pleural cavity located? What is its function? 5 Numb

Question

Section Date 4 Where is the pleural cavity located? What is its function? 5 Number the following structures of the respiratony tract in the proper order. The structure that comes into contact with oxygenated air first should be number 1, and the structures where ges should be number 12. Oropharyrx Trachea Nasal cavity Bronchiole Alveolar duct Larynx Nasopharynx Bronchi Alveolar sac Terminal bronchiole Respiratory bronchiole The structure that seals off the nasopharynx during swallowing is called the a. uvula. b. false vocal cord. c. true vocal cord. d. epiglottis. 6 7 The first passages of the respiratory zone, which have alveoli in their walls, are called a. terminal bronchioles b. respiratory bronchioles. c. alveolar ducts d. alveolar sacs.

Explanation / Answer

Q1. The pleural cavity is located between the two pleurae i.e. parietal pleura and visceral pleura of the lungs.It is the thin space between two pleural layers and normally contains a small amount of pleural fluid.The pleural cavity aids optimal functioning of lungs during breathing.It transmits movements of the chest wall to the lungs,during heavy breathing.

Q2.Nasal cavity-->naso pharynx-->oropharynx-->laryngopharynx-->larynx-->trachea -->bronchi-->bronchioles-->terminalbronchioles-->respiratorybronchoiles-->alveolar ducts-->alveolar sacs.

Q3.uvula is the structure(along with the soft palate) that seals the nasopharynx during swalloing.

Q4..The first passages of the respiratory zone,which have alveoli in their walls,are called respiratory banchioles.

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