Class Notes (838,985)
Canada (511,151)
ANAT 101 (99)

Lecture #16 - Respiratory System.doc

7 Pages
Unlock Document

Anatomy and Cell Biology
ANAT 101
Richard Oko

Lecture #16 - Respiratory System Goal of Respiration • energy,ATP • growth, defense, reproduction Anatomical Structures Respiratory Tract = Conducting Portion + Respiratory Portion Conducting Portion Respiratory Portion Nose Small Bronchioles Pharynx Alveoli Larynx Trachea Bronchi Large Bronchioles Functions of CONDUCTING PORTION • move air to and from gas-exchange surfaces to lungs • protects respiratory surfaces from -dehydration (humidifying) -temperature changes (warming) -pathogens (filtering) • sound production -speech, singing • olfaction -sense of smell Respiratory Tract Epithelium -“mucociliary escalator” NOSE Lecture #16 - Respiratory System NASAL CAVITY anterior wall -external nasal features: external nares, cartilage, nasal bones, vestibule -nose hair (guards nasal cavity from sand, dust, insects floor -bony hard palate (palatine, maxillary bones) -separates nasal cavity from oral cavity posterior wall -internal nares “choanae” (2) -open into nasopharynx roof -olfactory epithelium - sensory cells detect smell, info sent to brain through holes in cribiform plate of ethmoid bone lateral wall -3 pairs of nasal conchae: superior & middle (ethmoid bone), inferior nasal conchae (
More Less

Related notes for ANAT 101

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.