Respiratory System

lead to the outside environment, and are the first place that air enters the respiratory system.

• epiglottis

• trachea

• oral and nasal cavities

• pharynx

cone-shaped. Conducts the air at the back of the nose and mouth down into the neck.

• epiglottis

• trachea

• oral and nasal cavities

• pharynx

A flap of cartilage that closes over the windpipe to prevent food from entering the respiratory system while swallowing.

• epiglottis

• trachea

• oral and nasal cavities

• pharynx

"wind pipe". Conducts air from the pharynx and larynx to the bronchi.

• epiglottis

• trachea

• oral and nasal cavities

• pharynx

"voice box". Contains the vocal cords that vibrate to produce sound.

• bronchioles

• larynx

• bronchus

• alveoli

Lead air from the trachea into the lungs.

• bronchioles

• larynx

• bronchus

• alveoli

Smaller in diameter than the bronchi; they get increasingly smaller as they pass deeper into the lungs.

• bronchioles

• larynx

• bronchus

• alveoli

Located at the end of bronchioles, these are air sacs that function in gas exchange between the respiratory and circulatory systems.

• bronchioles

• larynx

• bronchus

• alveoli

Made up of the organs and tissues that help you breathe oxygen to the lungs. Made of structures that conduct the air down an increasingly smaller series of tubes.

• lungs

• ventilation

• respiratory system

• exhalation

• inhalation

organs that provide a place for oxygen to enter the bloodstream.

• lungs

• ventilation

• respiratory system

• exhalation

• inhalation