A+P Lab postlab quiz 6

structures of the upper respiratory tract

nose, nasal cavity, pharynx, larynx

structures of the lower respiratory tract

trachea, lungs, bronchus, bronchioles, terminal bronchioles, respiratory bronchioles, alveolar ducts, alveoli

pathway of oxygen through the upper respiratory tract

nostrils to nasopharynx to oropharynx to laryngopharynx to larynx

pathway of oxygen through the lower respiratory tract

trachea to primary bronchi to secondary bronchi to tertiary bronchi to bronchioles

pathway of oxygen through the functional respiratory zone

respiratory bronchioles to alveolar ducts to alveoli to bloodstream

where does gas exchange take place?

within the alveoli

nose function

filters, warms, and humidifies the air you breathe in

nasal cavity function

conditions the air you breathe in

Pharynx function

pathway for air traveling from the nasal and oral cavities to the larynx and trachea

larynx function

cartilage that protects the airways

trachea function

main passageway for air to travel from the upper respiratory tract to the lungs

bronchus function

major airway that conducts air between the trachea and lungs

bronchiole function

controls airflow into the alveoli

terminal bronchiole function

final conducting pathway that delivers air to the gas-exchange surfaces of the lungs

lungs function

gas exchange

respiratory bronchioles function

serves as a bridge between the air-conducting pathways and gas-exchanging tissues of the lungs

alveolar duct function

distribution space that connects the respiratory bronchioles to the alveoli

alveoli function

facilitate gas exchange