expiration is a topic covered in the Taber's Medical Dictionary.

To view the entire topic, please or purchase a subscription.

Nursing Central is the award-winning, complete mobile solution for nurses and students. Look up information on diseases, tests, and procedures; then consult the database with 5,000+ drugs or refer to 65,000+ dictionary terms. Explore these free sample topics:

Nursing Central

-- The first section of this topic is shown below --

(ĕks″pĭ-rā′shŭn )

[Gr. ex, out, + L. spirare, to breathe]

1. Expulsion of air from the lungs in breathing. Normally the ratio of the duration of inspiration to expiration is 1:3. Exhalation takes longer than inspiration because exhalation occurs passively.
SEE: diaphragm for illus.; SEE: inspiration; SEE: respiration
2. Death.

-- To view the remaining sections of this topic, please or purchase a subscription --