Ch 2 & 3 Flashcards
Respiration
Exchange of gas between an organism and its environment
Inspiration
Breathing in
Expiration
Breathing out
Alveoli
Air sacs where gas exchange happens after gas has been drawn into the system
Diffusion
Migrating or mixing of one material through another
Air pressure
Force exerted on the walls of a chamber by molecule of air
Boyle’s Law
Given a gas of constant temperature, if you increase the volume of the chamber in which the gas is contained, the pressure will decrease
Positive pressure
Air pressure that exceeds atmospheric pressure; molecules are much closer together and pressure is increased
Negative pressure
Air pressure is less than atmospheric pressure; molecules move farther apart so pressure decreases
Foramina
Openings
Corpus
Body
Facet
Small face
Tubercle
A small rounded prominence on bone
Pedicle
Foot
Ambulation
Walking
Intervertebral disks
Separates the individual vertebrae of the vertebral column
Chondral
Cartilaginous
Xiphoid or ensiform process
Tip of the sternum; sword or swordlike
Congenital
Present at birth
Bolus
Ball or lump of masticated food ready to swallow
Mediastinal
Referring to the middle space; in respiration it refers to the organs separating the lungs
Dead air
Air that does not descend below the space that cannot undergo gas exchange with the blood
Gastroesophageal reflux
Reintroduction of gastrointestinal contents into the esophagus and respiratory passageway
Pulmonary
Pertaining to the lungs
Goblet cells
Within the mucosal lining and submucosal glands that secrete lubricant into the respiratory tract to trap pollutants as they enter the trachea and larynx