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HISTOLOGY OF RESPIRATORY TRACT - Coggle Diagram
HISTOLOGY OF RESPIRATORY TRACT
SLO1 : Describe microscopic structures of nasal mucosa
Characteristics of NASAL MUCOSA
PSEUDOSTRATIFIED COLUMNAR CILIATED EPITHELIUM
Has goblet cells
secrete mucus
to trap particles --> cilia cell in pharynx swallowed --> destroyed by gastric acid
Supported by:-
blood vessel
serous glands
lamina propria
Has olfactory glands of bowman
mucous glands
function of glands :-
for T & humidified
OLFACTORY
OLFACTORY EPITHELIUM
PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
TYPE OF CELLS :-
SUPPORTING CELLS
BASAL CELLS
OLFACTORY CELLS
OLFACTORY MUCOSA
Has BOWMAN'S GLAND
To produce constant flow of fluid surrounding olfactory cilia
Facilitating access of new odoriferous substances
PARANASAL SINUSES (maxillary sinus)
NASOPHARYNX
NASAL CAVITY
REGIONS :-
VESTIBULE
NON KERATINIZED STRATIFIED SQUAMOUS EPITHELIUM
RESPIRATORY SEGMENT
OLFACTORY MUSCLE
SLO2 : Describe the microscopic structure of larynx
FOLDS
UPPER FOLD
COLUMNAR CILIATED EPITHELIUM
HAS SEROMUCOUS GLANDS
= FALSE VOCAL CORD
LOWER FOLD
= TRUE VOCAL CORD
STRATIFIED SQUAMOUS EPITHELIUM
FX of vocalis : for movement --- to control PITCH
VOCALIS MUSCLE
VOCALIS LIGAMENT
Between :- has narrow cleft
Lined by : COLUMNAR EPITHELIUM
Contains SEROMUCOUS GLANDS
SLO3 : Describe the microscopic features of trachea
LAYERS
RE
LP
S
FT
SLO4 : Describe the microsopic structure of bronchial tree
BRONCHUS
PSEUDOSTRATIFIED RESPIRATORY EPITHELIUM
Presence of :-
SUPPORTING CARTILAGE
SMOOTH MUSCLE
Between lamina propria & submucosa
Increase down the tract
GLANDS
BRONCHIOLE
TERMINAL BRONCHIOLES
Smallest diameter passages of conducting portion of respiratory tree
RESPIRATORY BRONCHIOLES
CLARA CELLS
CHARACTERISTICS
DOME SHAPED
NON CILIATED
FUNCTION
Produce components of SURFACTANT
Act as STEM CELLS
Contain enzyme systems