1.1 Human Respiratory System Flashcards
The nasal chamber opens into a common passage for food and air called.
Pharynx
Pharynx opens through the larynx into ______
Trachea
The cartilaginous box helping in the production of sound is
Larynx
Trachea divides into right and left primary bronchi at the level of which vertebra?
5th thoracic vertebra
Bronchi further undergo repeated sub-divisions and end up in very thin _______
Terminal bronchioles
Do terminal bronchioles give rise to?
Alveoli
Originating from terminal bronchioles are very thin, irregular-walled and vascularised bag like structures called
Alveoli
The double-layered membrane which covers lungs is ________.
Pleural membrane
The fluid that reduces friction on lung surface is
Pleural fluid
Outer pleural membrane stays in contact with which lining?
Thoracic lining
The part of the respiratory system constituting external nostrils upto terminal bronchioles is called
Conducting part
The exchange part of respiratory system constitutes both _____ and _____
Alveoli and alveolar ducts
The part of respiratory system involved in transportation of air to alveoli, its humidification, and removal of foreign particles is
Conducting system
Actual diffusion of oxygen and carbon dioxide between blood and atmospheric air occurs in which system?
Exchange part of respiratory system
The lungs are situated in an airtight chamber called
Thoracic chamber
