Anatomical Organisation Of The Respiratory System

Question 1

Overview of the structure of the full respiratory system?

Answer 1

• sinuses, pharynx, larynx, trachea
• bronchial tube
• lungs and alveoli
• bronchi and bronchioles
• bronchial tune leading to the alveoli

Question 2

The structure of the bronchial tree?

Answer 2

• Primary, secondary and tertiary bronchus (surrounded by cartilage)
• bronchiole covered by smooth muscle
• becomes terminal bronchiole
• leading to the respiratory zone (alveoli)
  (C-shapes cartilage, stops collapsing/bronchioles lose cartilage and have SM for expansion/ alveoli increases SA)

Question 3

The structure/surroundings of the alveoli?

Answer 3

• Alveolus surrounded by the alveolar capillary barrier
• in contact with squamous epithelial cells
• this then surrounded by (capillary and epithelial) basement membrane

Question 4

The structure of the bronchial tube?

Answer 4

Out to in:

• smooth muscles
• blood vessels
• mucous lining
• lumen