What lines the ear canal?
Epidermis (stratified squamous epithelium)
What are ceruminous glands?
Any pathology which affects the ___ can also affect the ear canal.
What kind of epithelium lines the middle ear?
What is the Organ of Corti?
Part of cochlea which contains hair cells
What type of epithelium is found in the nasal vestibule?
Keratinised squamous epithelium
What type of epithelium is found in the nasal cavities and sinuses?
What is it exactly the same as?
Respiratory epithelium - pseudostratified ciliated columnar epithelium with goblet cells
What types of epithelium are found in the throat?
Squamous epithelium for vocal cords
What type of glands are the salivary glands?
What do the serous cells and mucus cells of the salivary glands secrete?
Serous - digestive enzymes e.g alpha amylase
Mucus - clear grey sticky mucus
What is otitis media?
Inflammation of the middle ear
What usually causes otitis media?
Occasionally bacteria, if chronic, suspect Pseudomonas
What is a cholesteatoma?
NOT a TUMOUR and DOESN'T CONTAIN CHOLESTEROL
Production of keratinised squamous epithelium in middle ear producing nasty discharge
Cholesteatoma involves the metaplasia of ___ ___ epithelium into ___ ___ epithelium.
What is a nerve tumour of the nerve which controls balance?
Tumours at which angle are almost always benign vestibular schwannomas?
What do schwannomas look like on histology?
Verocay bodies - sandwiches of cells between darker palisades
What genetic disease predisposes you to bilateral schwannomas?
Neurofibromatosis type 2
(also cafe au lait spots, axillary freckles, Lisch nodules in the eye)
What sign is seen in the eyes in neurofibromatosis type 2?
What is the mode of inheritance of NF type 2?
What are common benign masses found in the nose?
Which group are they NOT common in?
If you encounter a child with nasal polyps, what should you consider?
Are nasal polyps painful?
What type of vasculitis has a lot of midline symptoms (i.e ENT, renal)?
Now called granulomatosis with polyangiitis
Which antibodies are detected in
a) microscopic polyangiitis
b) granulomatosis with polyangiitis (Wegener's)?
What is one of the most common reasons for nasal ulceration?
What happens to blood vessels in granulomatosis with polyangiitis?
Occluded by giant inflammatory cells
What are some benign tumours of the nasal cavity?
Squamous cell papillomas
What are some malignant lesions of the nasal cavity?
Squamous cell carcinoma
What are malignant tumours of glandular epithelium?