Oral Cavity and Esophagus Histo - Downing Flashcards
The mucosa of the hard and soft palates have what kind of epithelium?
Both have stratified squamous keratinizing epithlium BUT the soft palate has a transition on the nasal side into pseudostratified columnar ciliated epithelium
The supporting wall for the soft and hard palates is what?
Hard palate = bone Soft palate = skeletal muscle and connective tissue
Tongue has what kind of surface epithelium?
ventral surface - squamous non-keratinzing dorsal surface - keratinizing squamous
Good Review: Nerve supply to tongue?
Anterior 2/3 - CN V and VII Posterior 1/3 - CN IX and X Intrinsic and extrinsic musclular innervations - CN 12
Name for large amount of infiltrating lymphocytes just under the epithelium of the posterior 1/3 of the tongue:
lingual tonsil
Label!
What is this an image of?
taste bud
more labeling
The difference between a serosa and an adventitia?
One of these two layers will be the deepest layer in all the tubular strucutre between the esophagus and rectum.
They are very similar, but a serosa is going to have a epithelial layer on the side distal from the lumen of the structure
Organs that appear smooth have serosa, organs that are intimately connected with surrounding connective tissue (liek the esophagus) have adventitia
Be able to label which side of the lip is what by the histology.
What muscle is seen?
What types of glands are seen?
Can you see the hair follicles?
where is the oral mucosa?
red area is on top
cutaneous area is on the right
can see labial sero-mucous glands on the left side
deeper on left is muscle supporting wall (orbicularis oris)
What part of the cheek submucosa helps reduce accidentally chomping on the mucosa?
The elastic tissue in the submucosa
What is the supporting wall in the oral cavity?
Buccinator musce
Describe the basic features of the filiform papillae:
- most numerous type
- occur in parallel ros across tonuge
- keratinization most obvious at tip of papillae
Basic features of fungiform papillae:
- Fewer in number
- toward tip of tongue
- club shaped
- reddish tint
- CRANIAL NERVE 7
Describe the basic features of the circumvallate papillae:
- adjacent to sulcus terminalis
- each papilla surrounded by deep trench
- many taste buds on the sides of the papillae
- supplied by cranial nerve IX
- serous glands of von ebner empty into trench
Name that papillae:
Circumvallate
Name that papillae:
fungiform
(looks like mushroom - fungi)
Name that papillae:
Filliform
Label
Name that duct!
Name that duct!
Name that duct!
point to the serous alveoli, mucous alveoli, and serous demilunes
Name what gland this slide is from
(parotid, submandibular, sublingual)
Parotid (see all that fatty tissue in there?)
Name the gland where this tiddue slide is from:
Sublingual (see all those mucous alveoli?)
Name that gland:
Parotid (look at all that adipose tissue!)
Name that gland:
submandibular
(tons of serous glands, but not fatty like the parotid)
