Respiratory Part 1 Flashcards
primary function of the respiratory system
- air conditon
- air filtration
- gas exchange
secondary function of the respiratory system
- olfaction
- phonation
mechanical respiration
-changing shape of the thorax
cellular respiration
- O2 carried to tissue
-oxidative metabolism
what are the conducting portion?
-nasal cavity to the terminal bronchial
-tubes that transport
Respiratory portion
-where gas exchange occurs
-respiratory bronchioles to alveoli
What is the last part of the conducting portion?
terminal bronchial
As you go from nasal cavity to alveoli the walls become __________
thinner
Respiratory Epithelium
-ciliated pseudo stratified columnar
-with goblet cells
-5 cells types
-lines most tracts
What are the 5 cell types in the Respiratory Epithelium?
- ciliated columnar cells
- goblet cells
- brush cells
- basal cells
- small granule cells
What is the most abundant cell type in the respiratory Epithelium?
ciliated columnar cells
Primary Ciliary Dyskinesia
-causes infertility in men
-cilia and flagella are immobile
Primary Ciliary Dyskinesia in some cases is due to a deficiency in ______
Dynein
ciliated columnar cells
-most abundent
-move mucus and matter
goblet cells
-synthesize and secrete mucus
-second most abundent
Brush cells
-short microvilli
-afferent nerve endings
-sensory receptor
Basal Cell
-stem cell
-on basal lamina
Basal cells of the respiratory epithelium give rise to
ciliated, goblet and brush cells
Mucins
-hydrophilic glycoproteins in goblet cells
-become mucus
Mucus
a viscous protective lubricating gel
Goblet cell population _______ as you get closer to the terminal bronchioles
tapers (gets less)
Metaplasia
change from one type of epithelial to another
Smokers respiratory epithelium
-causes metaplasia
-changes to stratified squamous (meter protection)
-decrease in ciliated columnar
-increase in goblet
smoker’s melanosis
-begin
-change in pigment color of the mucosa
