DEH 123: Head & Neck Anatomy
Chapter 7: Glandular Tissue
Chapter 7: Glandular Tissue
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Cartes-fiches
What are 5 glands that are closely related to the dental feild?
- Lacrimal
- Salivary
- Thyroid
- Parathyroid
- Thymus
This produces a chemical secretion necessary for normal body function.
Gland
This type of gland has a duct that sends secretions to a specific location (i.e. salivary glands)
Exocrine
These are ductless glands that secretes directly into the blood stream.
Endocrine
The motor nerves ____ flow while the sensory nerves ____ action.
- Regulate flow
- Trigger action
This is a watery protein fluid secretion.
Serous
This is the thick carbohydrate secretions.
Mucous
This is a hormone that stimulates teh metabolic rate.
Thyroxine
The lacrimal gland is located where?
Lacrimal fossa
What kind of secretions does the lacrimal gland produce?
Lacrimal fluid
What artery supplies the lacrimal gland?
Lacrimal artery (branch of the opthalmic artery)
What nerve supplies the lacrimal gland?
Greater petrosal & Lacrimal nerve
What is the function of the lacrimal gland/fluid?
Lubricates the eye
The purpose of this gland is the produce saliva to lubricate and clense the oral cavity.
Salivary glands
What nerves regulate the salivary gland?
Autonomic nervous system
What can affect salivary flow?
- Medications that decrease production / flow
- Blockage of the duct by a sialolith
What are 3 major salivary glands?
- Parotid: located posterior to the mandibular ramus, anterior and inferior to the ear.
- Submandibular: located inferior and posterior to the mandibular body
- Sublingual: located on the floor of the mouth, medial to the mandibular body
This is the largest encapsulated salivary gland.
Parotid
How much of the total salivary volume does the parotid produce, and what type does it produce?
- 25%
- Purely serous
Through what duct does the parotid secrete its serous saliva?
Stensen's (parotid)
What artery supplies blood to the parotid gland?
External carotid artery
What is a common disease associated with the enlargment of the parotid gland?
Mumps
Why would a tumor of the parotid gland cause facial paralysis?
Becasue the Facial nerve runs through it
This is the second largest encapsulated salivary gland.
Submandibular
How much of the total salivary volume does the submandibular produce?
60 - 65%
What type of saliva does the submandibular gland produce?
Mixed -- Serous and mucous
What duct does the submandibular gland secrete its mixed saliva through?
Wharton's (submandibular) which opens into the sublingual caruncle
What artery supplies the submandibular salivary gland?
Facial and lingual artery branches
True/False:
The submandibular gland is not associated with sialolith production.
False: it is associated with sialolith production
This is the 3rd largest UNencapsulated salivary gland.
Sublingual
What percent of the total salivary volume does the sublingual gland produce?
10%
What type of saliva does the sublingual salivary gland produce?
Mixed -- mucous and serous
What duct does the sublingual duct secrete its mixed saliva through?
Bartholin's duct (sublingual ducts) which opens into the sublingual caruncle
What artery supplies the sublingual salivary gland?
Sublingual and submental arteries
The minor salivary glands are more numerous and do not have names, what type of saliva do they secrete?
Mucous
Where are minor salivary glands located?
- Scattered in the buccal, labial, lingual mucosa, soft palate, lateral portions of the hard palate, and floor of the mouth
- Von Ebners glands on the circumvallate papilla
The curcumvallate papilla's Von Ebner's glands produce what type of saliva?
Serous
** The only minor salivary gland to do such
This is the largest glandular tissue. It is ductless. It secretes thyroxine. Has 2 lobes the right and left which are connected by an isthmus. It is located inferior to the hyoid at the junction of the larynx and trachea.
Thyroid gland
**Adam's Apple
This is an elarged thyroid, may be firm, tender, and hard
Goiter
What artery supplies the thyroid gland?
Superior and Inferior thyroid arteries
