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Respi Anatomy

Micro

QuestionAnswer
Function of nasal vestibule hairs? Trap large particles.
What catches smaller particles in the nasal cavity? Sticky respiratory epithelium.
2 kinds of nasal cavity epithelia? Respiratory and olfactory (upper third).
2 bones that form the nasal septum? Vomer and (perpendicular plate of) ethmoid.
3 hyaline cartilages that form the nose? Alar, septal, lateral nasal.
The space under the superior concha? Superior meatus.
Blow-out fracture? Fracture of the medial obit.
Lining of the nasal vestibule? Stratified squamous epithelium.
Respiratory epithelium lines what features? Nasal cavity, auditory tube, air sinuses, nasopharynx, lacrimal sac, larynx, trachea, and bronchi.
What is in the lamina propria, between epithelium and bone? Arteries, distended veins (swell bodies), and mucoserous glands.
Describe respiratory epithelium. Pseudostratified ciliated columnar epithelium.
Respiratory epithelium consists of what? Ciliated cells which move mucous, goblet cells which produce mucous, small granule cells (endocrine), brush cells (sensory), basal cells (stem cells).
Describe olfactory epithelium. Thick pseudostratified ciliated columnar epithelium with much olfactory nerve tissue. Lamina propria contains large veins (swell bodies) and olfactory (Bowman's) glands which release serous fluid to bind odor molecules.
Where is cuboidal epithelium found? Bowman's glands and ducts.
Olfactory epithelium consists of what? Bipolar nerve cells with an apical projection (olfactory vesicle) sprouting modified cilia that function as odor receptors; supporting cells with apical nuclei and microvilli; sensory brush cells; and basalar stem cells.
Name the paranasal sinuses. Frontal, maxillary, ethmoid, and sphenoid (the only non-paired).
The space over the superior meatus? Sphenoethmoidal recess.
What connects each nasal cavity to the nasopharynx? Choanae.
Where does the sphenoid sinus drain? Sphenoethmoidal recess.
Where do the posterior ethmoid air cells drain? Superior meatus.
Where do the anterior and middle ethmoid air cells drain? Ethmoid bulla, which is in the middle meatus.
Where do the Frontal and Maxillary sinuses drain? Semilunar hiatus, which is in the middle meatus.
Where does the nasolacrimal duct drain? Inferior meatus.
Where is the opening of the auditory tube? Nasopharynx.
Why is the maxillary sinus a frequent site of infection? Because of its superior-oblique angle of entry into the semilunar hiatus.
Which nerve innervates the frontal sinus? Supraorbital nerve (branch of V1).
Which nerve innervates the sphenoid sinus and ethmoid air cells? Branches of V1.
Which nerve innervates the maxillary sinus? Infraorbital and superior alveolar nerves (branches of V2). Pressure from maxillary sinusitis can cause the perception of tooth and facial pain.
What replaces respiratory epithelium in the oropharynx and esophagus? Non-keratinized stratified squamous epithelium, due to the higher impact nature of these areas.
Created by: tobyburke
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