Ch. 7.10 Respiratory System
Alveoli
Air sacs at the end of the smallest bronchioles
Bronchi
Two parts of the trachea divided to left and right bronchi
Bronchioles
Smallest branches of divided bronchi
Cellular Respiration
Cells use oxygen and nutrients to produce energy, water, and carbon dioxide
Cillia
Tiny, hairlike structures that filter inhaled air to trap dust and other particles
Epiglottis
Special leaflike piece of cartilage that closes the opening into the larynx during swallowing
Expiration
Inhalation; diaphragm and intercostal muscles relax
External Respiration
Exchange of oxygen and carbon dioxide between the lungs and the bloodstream
Inspiration
Process of breathing in air
Internal Respiration
Exchange of carbon dioxide and oxygen between the tissue cells and the bloodstream
Larynx
Voice box; lies between the pharynx and trachea
Lungs
Divisions of the bronchi and the alveoli are found in this organ
Nasal Cavities
Two hollow spaces of the nose divided by the nasal septum
Nasal spetum
A wall of cartilage dividing the nose into two hollow spaces
Nose
Consists of bony framework and cartilage with skin covering the framework
Pharynx
Throat; lies directly behind the nasal cavities
Pleura
Sac or membrane enclosing a lung
Respiration
Process of inspiration and expiration
Respiratory System
Consists of the lungs and air passages; responsible for taking in oxygen and removing carbon dioxide
Sinuses
Cavities in the skull that surround the nasal caval
Trachea
Windpipe; tube extending from the larynx to the center of the chest
Ventilation
Process of breathing; two phases of inspiration and expiration