Histology Of Respiratory System🦋 Flashcards
What are principle functions of the respiratory system
The respiratory system consists of what
What portions make up the respiratory system
Air conduction, air filtration, gas exchange
Lungs and air passages leading to and from lungs
Conducting portion
Respiratory portion
What does the conducting portion consist of
What does the conducting portion do
Nasal cavity, pharynx, larynx, trachea,bronchi,bronchioles,terminal bronchioles
It cleans,warms and moistens air
What does the respiratory portion consist of
Respiratory bronchioles, alveolar ducts, alveolar sacs, alveoli
The paired chambers in the nasal cavity are divided into what
Vestibule, olfactory segment and respiratory segment
Describe the vestibule
It’s lined with stratified squamous epithelium
Has vibrissae (small hairs)
Is a continuation of skin of face
Where it ends the pseudostratified epithelium begins
Describe the respiratory segment
What cells are present in this epithelium
It’s the largest and lined with ciliated pseuodostratified columnar epithelium
Goblet cells( secrete mucus), cilia (movement of mucus), brush cells(with microvilli), enteroendocrine( contain secretory granules)
Describe the olfactory segment
Is lined with olfactory mucosa Has bipolar neurons Is lined with ciliated pseudostratified columnar epithelium Lacks goblet Has basal cells
