The Respiratory System Flashcards
(39 cards)
What is the main function of the Respiratory System?
Respiration
What are the 3 steps of respiration?
Pulmonary ventilation
External respiration
Internal respiration
What is Pulmonary Ventilation?
The mechanical flow of air in and out of the lungs.
What is External Respiration?
It is gaseous exchange in the lungs
What is Internal Respiration?
It is gaseous exchange in the tissues.
What are the 6 functions of the respiratory system?
- Respiration
- helps to regulate Blood Ph
- filters, warms,and moistensinspired air
- produces sounds
- rids thebody of some water and heat in exhaled air.
What are the 3 upper parts of the respiratory system?
- Nose
- Nasal cavity
- Pharynx
What are the 4 lower parts of the respiratory system?
- Larynx
- Trachea
- Bronchi
- Lungs
What is the conduction zone?
Its a series of tubes and cavities that conduct air in and out of the lungs
What is the respiratory zone?
Its the tissues within the lungs that gas exchange occurs.
What is the external part of the nose made from?
Skin and Cartilage and it is lined with a mucous membrane.
What is the nose adapted for?
Warming, moistening and filtering air. and olfaction and acting as a resonating chamber.
What is the pharynx?
It is a funnel shaped tube that starts at the internal nares and extends a short way down the neck.
Where is the pharynx?
It’s behind the nasal and oral cavities and is composed of skeletal muscle lined with mucous membrane.
What is the nasopharynx?
Its the passageway for air
What is the oropharynx?
It is the passageway for air and food
What is the larynx?
Its the voice box and connects the pharynx and thetrachea.
What 4 things does the larynx include?
- Thethyroid cartilage(Adam’s apple),
- Theepiglottis,
- Thecricoid cartilage,
- Thevocal cords.
What is the trachea?
It joins the larynx to the primary bronchi
What is the trachea made from?
Smooth muscle and C-shaped rings of cartilage
What does the trachea split into?
Aright main (primary) bronchus, whichgoes to the right lung, and aleft main (primary) bronchus, whichgoes to the left lung.
What does the main bronchi divide to form?
Lobar or secondary bronchi
What does Secondary bronchi divide to form?
Segmental or tertiary bronchi.
What does Segmental bronchi divide to form?
Forms bronchioles.
