Breathing Flashcards
3 centers of respiratory regulation
Respiratory rhythm centre
Pneumotaxic centre
Chemosensitive area
Receptors associated with Co2 and H+ conc.
Aortic arch
Carotid artery
Chemosensitive area
Respiratory organs:
Nostrils Nasal cavity Pharynx Larynx Trachea Bronchi Bronchioles Alveoli
Role of nasal hair
Filter/remove dust,dirt and microorganisms
Role of mucus in nasal passage
Traps dirt
Smooth flow of air
Moisten air
Role of rings of cartilage(ROC) in wind pipe:
ROC helps free flow of air
Prevents air passage from collapse
Muscles present in ribs
Internal Intercostal muscles
External Intercostal muscles
Phrenic muscles
Role if plueral fluid:
To reduce friction on lung surface
Parts of respiratory system
Conducting part
Respiratory/exchange parts
Conducting part from where to where
Nostrils to terminal bronchioles
Respiratory/exchange part
Alveoli+ducts
Role of vessels in nasal passage
Regulates temperature of air
Normal breathing rate
12-16 per minute
Diffusion membrane consists
Squamous epithelial of alveoli
Basement substance
Endothelial of alveolar membrane
Conditions in alveoli
Low temprature
High PO2
Low PCO2
Low H+ conc.
