Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

To supply the body with oxygen and dispose of carbon dioxide

Major role of the respiratory system

pulmonary ventilation, external respiration, transport of gasses, internal respiration

Four processes of respiration

pulmonary ventilation

The tidelike movements of air into and out of the lungs so that the gases in the alveoli are continuously changed and refreshed. Also more simply called ventilation or breathing.

external respiration

The gas exchange between the blood and the air-filled chambers of the lungs (oxygen loading/ carbon dioxide unloading)

Transport of respiratory gases

The transport of gases between the lungs and tissue cells of the body accomplished by the cardiovascular system, using blood as the transport vehicle.

internal respiration

Exchange of gases between systemic blood and tissue cells (oxygen unloading/ carbon dioxide loading)

inferior, superior and middle

name the three pair of nasal conchae


'guardian of the airways'


the system that consists of a hollow tube extending from mouth to anus


involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system

rugae of mucosa

folds of the stomach


stores bile

thyroid and cricoid

two most prominent cartilage of the larynx




tiny balloon like expansions along the alveolar sacs and occassionally found protruding from alveolar ducts and respiratory bronchioles

inspiration and expiration

breathing consists of two phases

tidal volume

amount of air inhaled or exhaled with each breath under resting conditions

inspiratory reserve volme

amount of air that can be forcefully inhaled after a normal tidal volume inhalation

residual volume

the amount of air that remains in the lungs after a maximal expiratory effort

medulla and pons

where are the neural control center of respiratory rhythm?

inc thoracic vol, decr pressure

under what internal conditions does air tend to flow into the lungs?

decr thoracic vol, inc pressure

under what internal conditions does air tend to flow out of the lungs?


for ingested food to become available to the body cells, it must first be broken down physically and chemically into its smaller diffusible molecules- the process is called

GI Tract and the accesory digestive organs

the organs of the digestive system are traditionally separated into two major groups:

mucosa, submucosa, muscularis externa and serosa or adventitia

the alimentary canal walls have four tunics:


it is subdivided into nasopharynx, oropharynx and laryngopharyn


extends from the pharynx through the diaphragm to the gastroesophageal sphinter in the superior aspect of the stomach

pyloric sphincter

after the food is processed in the stomach, it resembles a creamy mass (chyme), which enters the small intestine through what?

duodenum, jejunum and ileum

subdivisions of the small intestine

parotid, submandibular and sublingual

list the 3 pair of salivary glands


large glands located anterior to the ear and ducting into the mouth over the second upper molar through the parotid duct


located along the medial aspect of the mandibular body in the floor or the mouth, and ducting under the tongue to the base of the lingual frenulum


small glands located most anteriorly in the floor of the mouth and emptying under the tongue via several small ducts

large intestine

its major function is to consolidate and propel the unusable fecal matter toward the anus and eliminate it from the body,


stores bile

kupffer cells

star-shaped hepatic macrophages


the enzyme that is produced by the salivary glands and secreted into the mouth, hydrolyzes starch to maltose.


the enzyme that is secreted by the pancreas, is responsible for breaking down proteins.

pancreatic lipase

the enzyme hydrolyzes neutral fats to their component monoglycerides and fatty acids.




movements are local contractions that mix foodstuffs with digestive juices and increase the rate of absorption.

peristaltic movements

the major means of propelling food through most of the digestive viscera

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording