An air sac in the lungs. Airfilled pockets within lungs where all gas exchange between air and blood occurs.
Hayline cartilage forms inferior wall of the larynx. Only complete ring of cartilage around trachea. Provides attachment for muscle & liagements. Protect the glottis & entrance to trachea. Most inferior cartilage of the larynx.
The largest laryngeal cartilage. Hayline cartilage forms most of anterior & lateral walls of larynx. Laryngeal prominence.
Composed of elastic cartilage. During swallowing pharynx & larynx rise. Pharynx widens to receive food & drink, elevation of larynix causes ? to move down & form a lid over the glottis, closing it off.
A larynx opening consists of a pair of mucous membrane folds the vocal folds in the larynx.
Respiratory exchange surface. warm, moist, protected environment.
Inferior nasal conchae
Create turbulence in air passing through the nasal cavity, & increase the epithelial surface area to promote warming & humidification of inhaled air. Increase surface area of nasal cavity.
Throat. Funnel-shaped tube starts at internal nares up to cricoid cartilage. Wall composed of skeletal muscles & lined with mucous membrane. Chamber for speech sounds, tonsils. Passageway for air & food.
Voice-box.Short passageway. Lies c4-c6.Surrounds & protects glottis. Connects laryngopharynx w. trachea.
Separated by mediastinum. represents a potential space not chamber.
Sinuses (paranasal sinus)
Bones around the face around the nose. Air-filled spaces communicating with nasal cavity. Reduce the weight of facial bones.
Inferior to vestibular folds, guard the glottis entrance. Highly elastic. Involved in production of sound.