Respiratory Structures

1
Respiratory Structures

• Respiration means to ventilate lungs, and
  exchange gases
• Respiration system two parts the conducting and
  respiratory division
• Conduction division passages that serve only
  airflow
• Respiratory division consists of alveoli the gas
  exchanging regions

2
Respiratory Structures

• Nose part of the upper respiratory tract, it
  warms, cleans, humidifies, amplifies voice, and
  detects odors in the air
• Air flow through the nostrils into the nasal
  cavity which is divided into L and R half by the
  nasal septum
• As air enters the nasal cavity it is funneled
  into the three fold of the nasal conchae causing
  the air to contact the mucosa

3
Respiratory Structures

• Pharynx a three part muscular tube that connects
  mouth and nasal cavity to larynx
• Nasopharynx conducts air from nasal chamber past
  tonsils to fight air bore pathogens, connects
  with back of mouth
• Oropharynx back of mouth pass air, food
• Laryngopharynx connects upper pharynx to the
  trachea and esophagus

4
Respiratory Structures

• Larynx top of trachea main purpose is to block
  food and liquid from lungs. Also contains the
  vocal cords
• Epiglottis a flap of tissue located on top of
  the larynx that covers the trachea during
  swallowing
• Vocal cords contain vocal ligaments that vibrate
  to produce sound when air passes over them

5
Respiratory Structures

• Trachea or windpipe is a ridged tube that is
  supported by C shaped rings of cartilage that
  keep it from collapsing during inhaling, it is
  often called the trunk of the bronchial tree
• Carina last segment of the trachea where the
  primary bronchi split

6
Respiratory Structures

• Lung area of gas exchange, each has an apex and
  a base with the area against the rib cage called
  the costal surface
• R Lung is the larger of the two with three
  lobes superior, middle, inferior
• L Lung has cardiac impression and has only two
  lobes superior and inferior

7

• Peanut Butter Jelly Time!

8
Respiratory Structures

• Bronchial tree a series of branches from the
  trachea that funnel air to the alveolar sacks
• As branches get smaller they change names from
  biggest to smallest
• Primary, Secondary, Tertiary, Bronchioles,
  Terminal bronchioles, Respiratory bronchioles,
  Alveolar ducts, Alveolar sacs
• Bronchial tree is lined with a mucus producing
  tissue that traps debris and pathogens

9
Respiratory Structures

• Alveoli are the structures found in the grape
  like clusters of the alveoli sacs
• Gases are only exchanged in the alveoli
• The alveoli are coated in pulmonary surfactant
  which keeps the side of the alveoli from sticking
  together upon exhale