Question

Identify 2, 4, 7 in the given diagram

• A. 2:Nasal Cavity
  4:Trachea
  7:Bronchi
  
• B. 2:Pharynx
  4:Trachea
  7:Alveoli
• C. 2:Larynx
  4:Pharynx
  7:Bronchi
  
• D. 2:Nasal Cavity
  4:Larynx
  7:Alveoli

Answer 1

The correct option is B 2:Pharynx

4:Trachea
7:Alveoli

• External nostrils – For the intake of air.
• Nasal chamber – which is lined with hair and mucus to filter the air from dust and dirt.
• Pharynx – It is a passage behind the nasal chamber and serves as the common passageway for both air and food.
• Larynx – Known as the soundbox as it houses the vocal chords, which are paramount in the generation of sound.
• Epiglottis – It is a flap-like structure that covers the glottis and prevents the entry of food into the windpipe.
• Trachea – It is a long tube passing through the mid-thoracic cavity.
• Bronchi – The trachea divides into left and right bronchi.
• Bronchioles – Each bronchus is further divided into finer channels known as bronchioles.
• Alveoli – The bronchioles terminate in balloon-like structures known as the alveoli.
• Lungs – Humans have a pair of lungs, which are sac-like structures and covered by a double-layered membrane known as pleura.