respiratory system physiology Flashcards
what is the main function of respiratory systems
it provide necessary exchange of Oxygen and Carbon dioxide for homeostasis
upper respiratory tract
nose
mouth
pharynx
larynx
lower respiratory
trachea
bronchial tree
lungs
transmission zones functions
sound formation [phonation]
heating
humidification
filtration
cleaning of received air
alveolar cells types
1=gaseous exchange
2=production of surfactants
3=found all over the lungs
lung ventilation
movement of air into or out of the respiratory system
respiratory types
abdominal breathing
thoracic
abdominal breathing
inspiration occurs with contraction of the diaphragm
thoracic breathing
occurs with contraction of external intercostal muscles and movement of ribs
cough reflex
defense mechanism that allow the body to clear secretions and foreign bodies from respiratory tract
airways
structure that transmit air from the mouth and nose to the respiratory bronchioles
alveolar ventilation
volume of air involved in gaseous exchange in alveoli
anatomical dead space [ADS]
conduction pathway for the volume up to gaseous exchange site
physiological dead space
alveoli that does not participate to ADS
apnea
respiratory arrest
eupnea
normal, relaxed breathing at rest
hyperpnea
increased in depth and/or speed of breathing
hypopnea
decreased in depth and /or speed of breathing
dyspnea
difficult and painful breathing
tachypnea
rapid breathing
hyperventilation
increased alveolar ventilation
hypoventilation
decreased alveolar ventilation
surfactant
lower surface tension
a mixture of phosphorus, protein and ion
24th week of pregnancy
35-36th week of pregnancy
respiratory difficulty syndrome
collapse of alveoli due to insufficiency surfactants especially in premature babies