Did you know?

• Nose 


  acts as a filter to moisten and warm the entering air
• Pharynx


  Serves as a food and air passageway
• Larnyx


  Voice box. Location of the vocal cords
• Epiglottis


  Flap of cartilage that automatically covers the opening of the larynx during swallowing
• Trachea


  The windpipe. Passageway of air to the bronchi
• Bronchus


  Two branches that carry air from the trachea to the lungs
• Bronchioles


  smallest subdivision of the bronchial tree
• Lungs


  two sponge-like organs in the chest cavity
• Pleura


  serous membrane covering each lung and lining the chest cavity
• Diaphragm


  muscular partition that separates the chest from the abdominal cavity
• Mediastinum


  space between the lungs that contain the heart, esophagus, trachea and others
• When we inhale, or inspire, air enters the body through the nose via 


  the external nasal nares (nostrils)
• This cavity is lined with a mucous membrane and fine hairs called

  cilia that filter out foreign bodies (such as dust and pollen)
• paranasal sinuses 


  are hollow, air spaces in the skull that join up with the nasal cavity.
• The singular form of nostrils, or nares,

  is naris.
• Five hundred cubic feet of air passes through

  the nasal cavities every 24 hours.
• nasopharynx 


  is nearest the nasal cavity and contains the adenoids.
• The vocal cords have a slit between them called the

  glottis
• Sound is produced as air moves out of the lungs, through the___ , causing vibration.

  glottis
• Some of these rings make up the thyroid cartilage forming the projection called the 


  Adam's apple
• is the largest cartilage ring in the larynx.

  The Adam's apple
• The trachea divides into two branches called the 


  bronchi
• The smallest of the bronchial branches are called

  bronchioles
• At the end of the bronchioles are clusters ofair sacs called

  alveoli
• Each lung is covered by a membrane called the

  pleura
• The outer layer nearest to the ribs is

  parietal Papleura
• The two lungs are in the

  thoracic or chest cavity