a and p 2 exam 3 Flashcards
Internal air anatomy
concha: air bounces through here
meatus: slit air travels through
sinus: keeps air moist
mucocilary elevator
pushes muscus up
nasal epethelium
contains olfactory nerve: it picks up on smell and goes directly to brain
the pharynx
connects to mouth and nasal passages,
epiglotis
Senses if our air is something else, if it is it will close.,
Nasophraynx
PCCE (contains lots of cilia)
Pushes mucus down throat
why our ears pop
Tonsil (lymphatic tissue)
Orophraynx
mouth and nose connect
has stratified squamos for protection
Larugopharynx
goes towards voice box
b4 it gets to larynx it becomes sutostratified columnar
Functions of the larynx
deleivers oxygen to lungs and produces sound
Structures of external larynx
Thyroid cartilage:protects outer portion
Cricoid cartilage: Holds it in place
Epiglotis:It flaps
structures of internal larynx
arytenoid: controls sound and air coming in and out.
corniculate: maintain airway patency
Muscles of larynx
Stability
Intrisic: Tension on vocal folds / can rotate erytenoid and corniculate cartilages.
Glotis
small area that controls air movement
strucures of glotis
vocal fold: elastic tissue pulled by smooth muscles and works with erethnoid yo open and close
Trachea
keeps delivering air
lobar bronchus (bronchiols)
deliver air to the 3 lobes of the right lung.
The lungs
Right lobe:superior, inferior, middle lobe
left lobe : superior, inferior, cardiac notch
Hilum
everything circulates through hilium except bronchi and air
pleural cavaties membrane
avoids friction
helps us breathe correctly
Understand the role of cappilarry beds near alveoli
oxygen gas exchange
the capillaries then bring oxygenated blood to the heart
