Respiratory System I Flashcards
Two Divisions of Respiratory System
Conducting Portion ( Nasal Cavity to Bronchial Tree) Respiratory Portion(Respiratory Bronchioles to Alveoli)
Division where gaseous exchange occurs
Respiratory Portion
Division where inhaled air is delivered to lungs and is warmed, filtered, and moistened
Conducting Portion
The nasal cavity has 3 distinct histological regions:
- Vestibule
- Olfactory
- Respiratory
The vestibule is the …………. part of the nasal cavity
Anteriomost part
The……. of the vestibule has glands and vibrissae that …………..
Lamina propria
Trap large particulate material from inspired air
The epithelium of the vestibule is lined mainly by stratified squamous epithelium (skin) associated with sebaceous glands and short firm hairs called……
Vibrissae
The respiratory region of the nasal cavity is lined by….
Respiratory muscosa
The lamina propria of the respiratory region of the nasal cavity is …………
Highly vascularized: blood vessels lined up parallel to the air flow to warm the air.
The lamina propria of the respiratory region becomes engorged and leaky during …… leading to distention of the lamina propria and …………
Allergic Reactions and Viral Infections
Difficulty Breathing
Skeletal elements in the wall of the nasal cavity forms shelves or turbinates, which increase the surface area and therefore increases …..
Increases filtration and warming of the air
Olfactory region is located on the ….. of the nasal cavity
Roof of the nasal cavity
Olfactory region is lined by ………… epithelium with 4 cell types.
Tall Pseudo-stratified Columnar Epithelium
The 4 cell types of the olfactory region of the nasal cavity:
– Olfactory cells (Bipolar neuron)
– Brush cells (Columnar with Microvilli)
– Supporting cells (Columnar with Microvilli)
– Basal cells (Small and Rounded)
The ……. of the olfactory mucosa is continuous with the pericardium, highly vascularized, and had abundant nerve endings.
Lamina Propria
………….. are serous secretory units with short ducts that drain to the surface. They also contain lipofucin granules in the cells of the ducts and contributes to the yellow color of the olfactory region.
Olfactory (Bowman’s) glands
Apart of Olfactory Mucosa
……….. dissolves odoriferous substance and clears away remnants of odoriferous substances.
Olfactory (Bowman’s) glands
The tubular region between the oropharynx and trachea
Larynx