An/Phys - Respiratory System Flashcards
Respiratory System Pathway
List Pathway of Air Through Respiratory System
(in order)
Nose/Mouth
Pharynx
Larynx
Trachea
Bronchi
Bronchioles
Alveoli
Functions
Respiratory System
Capture oxygen from the air to deliver to the blood
Expels CO2 waste from the blood
Respiratory System Components
Nose
lined w mucous membranes, blood vessels
filters, warms, and moistens air for delivery to the pharynx
Respiratory System Components
Mouth
air flows directly into pharynx
easier for pathogens to enter body
Respiratory System Components
Pharynx
shared passageway for food, liquid, and air
delivers air to the larynx
Respiratory System Components
Larynx
contains vocal cords and epiglottis
Definition
Epiglottis
switching mechanism in larynx that delivers air to the trachea and bolus to the esophagus
Respiratory System Components
Trachea
connects larynx to the lungs
anterior to esophagus
supported by C-shaped cartilage rings
traps foreign matter with mucous membranes
moves foreign matter into esophagus via hair-like ciliated cells
delivers filtered air to bronchi
Respiratory System Components
Bronchi
Channels that move air into the right and left lungs
splits at T5
branches into bronchioles
Respiratory System Components
Bronchioles
smaller channels inside lungs
transfer air to alveoli
Respiratory System Components
Alveoli
millions of air sacs within lungs
transfers oxygen from air into blood stream
picks up CO2 waste from blood stream for exhalation
Functions
Capture oxygen from the air to deliver to the blood
Expels CO2 waste from the blood
Respiratory System
Respiratory System Components
lined w mucous membranes, blood vessels
filters, warms, and moistens air for delivery to the pharynx
Nose
Respiratory System Components
air flows directly into pharynx
easier for pathogens to enter body
Mouth
Respiratory System Components
shared passageway for food, liquid, and air
delivers air to the larynx
Pharynx
