Quiz 6: Glandular Tissue
What does the thymus gland do?
* Produces matured T cells (T lymphocytes) that fight infection (T Cells are a type of leukocyte)
saliva
- part of the immune system - lubricates and cleanses oral cavity - aids in digestion
blood supply of thyroid gland
- superior and inferior thyroid arteries - superior, middle, and inferior thyroid veins
How many lobes does thyroid gland have?
2 (left and right)
How much saliva do parotid glands produce? What type of saliva?
25% - serous
What duct is associated with the sublingual gland?
Bartholin's duct, into sublingual caruncle/smaller ducts of Rivinus
What type of gland is thymus gland?
Endocrine gland
Lacrimal gland is paired with what?
Exocrine glands that secrete lacrimal fluid (tears)
glandular tissue
In the head and neck area, it includes the lacrimal, salivary, thyroid, parathyroid, and thymus
Where does lacrimal gland flow?
It flows down into nasolacrimal duct to drain to nose and back of throat
ranula
Large mucocele on floor of mouth of sublingual gland or major salivary gland
Where there is NO minor salivary glands?
Not found on gingiva tissue and parts of anterior hard palate
What are major salivary glands?
Parotid (25%) Submandibular (60-65%) Sublingual(10%)
Glandular system
Provides chemical substances for the body
Minor salivary glands
Smaller than major salivary glands but more numerous are the 600-1000 in number Less than 10% of all saliva
Does the thymus gland get bigger or smaller as you age?
Starts small --- gets bigger ---- then smaller by adulthood
What kind of duct do parotid glands have?
Stenson's duct (Duct located close to maxillary molars)
what type of duct does submandibular gland have?
Wharton's duct, opens to sublingual carauncle
What system control salivary glands?
autonomic nervous system
Where do minor salivary glands located?
buccal, labial, lingual, soft and hard palate, and floor of the mouth
Where does lacrimal gland travel into?
canaliculus to lacrimal sac
Where is the parotid gland located?
cheek, in front of the ear within parotid space
endocrine glands
ductless gland where secretion is emptied directly into vascular system
What type of gland is thyroid gland?
endocrine gland
mumps
enlarged parotid gland
goiter
enlarged thyroid gland
What type of glands are salivary glands?
exocrine glands, secrete saliva
Parathyroid glands
four small glands on the posterior of the thyroid gland
exocrine gland
gland with associated duct serving as passageway for secretion to be emptied directly into site of use
Where does thymus gland located?
in the thorax
Where is the lacrimal gland located?
lacrimal fossa of frontal bone
What are the major silvary glands pair with?
large paired glands and ducts associated with them (exocrine)
mucocele
lesion of the minor salivary gland
Where do the parathyroid glands located?
located within thyroid gland
thymus gland
lymphoid organ in the mediastinum that conditions T cells to react to foreign cells and aids in the immune response
Von Ebner's glands
minor salivary glands associated with circumvallate lingual papilla
What does submandibular gland secrete?
mixed secretion (%60-65) - main contributor of saliva
What does the sublingual gland secrete?
mixed, but mostly mucous (%10)
duct
passageway to carry secretion to a location
thyroid gland
produces hormones that regulate metabolism, body heat, and bone growth
What do the parathyroid glands do?
regulate calcium and phosphorus by parathyroid hormone
what does parathyroid gland regulate?
regulates calcium and phosphorus by parathyroid hormone
submandibular salivary gland
second larger major salivary gland
sialolith
stone in the salivary gland from Wharton's duct - complication of lingual nerve damage due to its location
gland
structure that produces a chemical secretion necessary for normal body functioning
Where is the sublingual gland located?
sublingual fossa
What is the smallest major salivary gland?
sublingual gland
Which gland is unencapsulated (not encapsulated by connective tissue)?
sublingual gland
What salivary gland produces the most saliva?
submandibular
Where is the submandibular gland located?
submandibular fossa
What gland is most commonly found to have salivary stone formation?
submandibular gland
Lymphatic drainage of the submandibular gland
submandibular lymph nodes
drainage of the thyroid gland
superior deep cervical nodes
What does the thyroid gland secrete?
thyroxine (matabolism/rate)
Are salivary glands large and paired?
yes
Do the minor salivary glands have ducts?
yes, but ducts are shorter than those of the major salivary glands - Each has single duct
