Glands And Associated Structres Flashcards
Largest salivary gland
Parotid gland
In cheek
What salivary duct is paired with the parotid gland?
Stensen’s duct
Which duct is paired with the submandibular salivary gland?
Wharton duct
Which duct is paired with the sublingual salivary glands?
Bartholin’s duct
Lymph nodes located anterior to the ear
Preauricular lymph nodes
Lymph nodes located posterior to the ear
Post auricular lymph nodes
Lymph nodes on the back of the head
Occipital lymph nodes
Glands
Structures that produce chemical secretions necessary for normal body function
Glandular tissue of the head and neck include:
Lacrimal Salivary (major and minor) Thyroid Parathyroid Thymus
Gland types
Exocrine
Endocrine
Exocrine glands
Having a duct, secretions travel through the ducts
Duct
Passageway for secretion to be emptied directly into the location where it is needed
Endocrine
Ductless, secretions enters blood directly, then carried to region where it is needed
Motor/efferent nerves
Regulate the flow of secretions
Autonomic nervous system controls this:
Sympathetic decreases secretions
Parasympathetic increases secretions
Sensory/afferent nerves
Pain, touch, and proprioception
Special sensory/afferent nerves
Tongue/taste
Lacrimal gland
Paired exocrine glands, produces lacrimal fluid or tears
Located in the lacrimal Fosse of the frontal bone superiolateral to the eye
What innervates the lacrimal gland’s?
Motor- Greater petrosal nerve
Sensory- Lacrimal nerve, branch of ophthalmic
Blood supply- lacrimal artery, branch of ophthalmic artery
Lymphatics of the lacrimal gland
Drained by superficial parotid lymph nodes
Secretions of the lacrimal gland
Fluid leaves the gland through 8 to 12 fine tubules
Lachrymal fluid lubricates conjunctiva lining of eyelids in front of eyeball
Nasolacrimal sac- thin walled structure behind medial canthus. Fluid drained through lacrimal puncta and enters the sac
Nasolacrimal duct
Located at the junction of the lacrimal and maxillary bones
Drains fluid from nasal lacrimal sac into inferior nasal Conchea via inferior nasal meatus into the nasal cavity
Parotid salivary gland
Largest, bilateral, and capsulated major salivary gland
Located in the parotid facial space, behind ramus, in front of and below the ear and extends irregularly from the zygomatic arch to the angle of the mandible
Superficial lobe- Posterior and inferior to the zygomatic arch
Deep lobe- Extends close to muscles of the pharynx
Secretions of the parotid salivary gland
Pure Sarah’s fluid. Produces 25 to 30% of total salary volume
Which duct drains the parotid salivary gland?
Stensen’s duct
Emerges from the glands anterior border. Opens opposite the second maxillary molar
Parotid papilla
Small elevation of tissue that marks the opening of the Stenson duct on buckle mucosa opposite the maxillary second molar
Innervation of the parotid gland
Motor/efferent- glossopharyngeal nerve
Sensory/afferent- auriculotemporal nerve
Facial nerve travels through the gland but does not innervate this gland
Which lymph nodes drain the parotid gland
Deep parotid lymph nodes
Blood supply to the parotid gland
Branches of external carotid artery
Superficial temporal artery
Maxillary artery
Transverse facial artery
Sub mandibular salivary gland
Second largest, bilateral, encapsulated major salivary gland
Occupies the sub mandibular Fossa
Superficial lobe- inferior to the mylohyoid muscle
Deep lobe- Wraps around the posterior border of the mylohyoid muscle
Secretions of the submandibular gland
Mixed
80% serous fluid and 20% mucus
Produces 60 to 65% of total salivary volume
Which duct drains the submandibular gland
Wharton duct
Arises from the deep lobe, superior to the mylohyoid muscle and travels anteriorly in the floor of the mouth
Sublingual caruncle
Openings for both Wharton and Bartholin duct
Small, bilateral, round papilla in midline of the floor of the mouth on the lateral sides of the lingual frenum
Opening for ducts of both the submandibular and sublingual glands
Innervation of the submandibular salivary gland
Motor/efferent- chorda Tympani nerve & submandibular ganglion
Sensory/afferent- Lingual nerve
Lymphatics of the submandibular gland
Drained by submandibular lymph nodes
Blood supply of the submandibular gland
Glandular artery, branch of facial artery
Sublingual salivary gland
Smallest, bilateral, encapsulated major salivary gland
Occupies the sub lingual Fossa in the floor of the mouth, superior to the mylohyoid muscle and posterior to genial tubercles
Secretions of the sublingual gland
Mixed
Mostly mucus with some serous fluid. Produces 5 to 10% of the total salivary volume
Which ducts drain the sublingual salivary gland
Ducts of Rivinus
Bartholin duct
Ducts of Rivinus
Several small ducts, open on the sublingual plicae (found on crest of sublingual folds)
Bartholin’s duct
If present, opens on sublingual caruncles
short ducts converge and form one large duct
Innervation of the sub lingual gland
Motor/efferent- chorda tympani nerve, Submandibular ganglion
Sensory/afferent- lingual nerve
Lymphatics And blood supply of the sublingual gland
Drained by submandibular lymph nodes
Supplies by the sublingual artery
Minor salivary gland’s/glands of the lining mucosa
Exocrine glands with short, unnamed ducts
Primarily produce mucus secretions (except for von Ebners and anterior lingual)
Von Ebners gland
Produce pure serous fluid
Bilateral minor salivary gland‘s towards the back of the tongue
Ducts: Sulci of circumvallate papilla. Sulcus terminalis. Furrows of the folate papilla
Anterior lingual glands
Produce mixed secretions
Innervation and lymphatics of the minor salivary glands
Facial nerve
Drained by various lymph nodes in the immediate area
Blood supply and location of minor salivary glands
Supplied by various arteries in the immediate area
Glands are scattered throughout the oral cavity and oral pharynx: Soft palate, hard palate, dorsal surface of the tongue, lingual mucosa, floor of the mouth
Minor salivary gland’s of the tongue
Anterior lingual gland- gland of Blandin Nuhn
Mixed secretions, located on the ventral surface
Ducks open on the plica fimbriata
Posterior lingual gland
Pure mucus secretions
Located on posterior third of tongue
Ducts: tonsillar crypts of lingual tonsils
Tubarial salivary gland
Located around the area of the torus tubarius- just inferior to the internal acoustic meatus
Functioning in the moistening and lubrication of the nasopharynx an oropharynx
Thyroid gland
Large ductless endocrine gland consisting of two lateral lobes connected by an isthmus
Inferior to the thyroid cartilage, at the junction between the larynx and the trachea
Secretions of the thyroid glands
Thyroxine- regulates metabolism
Calcitonin- Helps regulate calcium metabolism
Innervation of the thyroid
Cervical ganglia
Release of secretions regulated by the pituitary gland
Lymphatics and blood supply of the thyroid
Drained by the superior deep cervical lymph nodes
Supplied by the cricothyroid artery
Parathyroid gland
Endocrine gland, consisting of four small glands, two on each side
Usually located close to or inside the thyroid gland on it’s posterior surface
Secretions and innervation of the parathyroid gland
Parathyroid hormone- Regulates calcium and phosphorus levels in the blood
Innervated by the cervical ganglia
Thymus gland
Endocrine gland, part of the immune system
Or moans enable T lymphocytes to mature in the gland
Grows from birth to puberty but atrophies after puberty
Inferior to the thyroid gland, superficial and lateral to trachea, deep to sternum
Secretions of the thymus
Thymoprotein- induces lymphocyte precursor cells to form T lymphocytes
Thymosin- Promotes maturation of T lymphocytes
Innervation and lymphatics of the thymus
Vagus nerve and cervical nerves
Lymphatics arise within the gland and terminate in the internal jugular vein
Sialolith
Salivary stone formation that blocks the drainage of saliva from the duct and causes gland to enlarge and become tender
Calcification of cells or foreign material.
Wharton duct instance and duct are most commonly affected
Xerostomia
Decrease production of saliva
Aging and medications may result xerostomia
May also be caused by Sjögren’s syndrome which affects the parotid gland and oral cancer that requires head and neck radiation
Mumps
Bilateral enlargement of the parotid gland- tender
Caused by a viral infection but can be prevented with a mumps vaccination
Mucocele
Oral mucous cyst
Harmless swollen spot, occurs most often on leave your mucosa of the lower lip but can form on any mucosa
Movable and painless. Soft and around. Pearly or semi-clear surface or bluish in color
Usually goes away without treatment
Ranula
Salivary pseudocysts occurring in the floor of the mouth and involve the major salivary glands
Results in pooling of saliva above the mylohyoid muscle
Caused by trauma to the duct of the major salivary gland or obstruction of the duct
No treatment for smaller ranula‘s
Goiter
Enlarged thyroid gland. May be firm and tender when palpated
Will be immobile and not move when patient swallows
Thyroid may be partially or fully removed, medication are administered to replace the thyroid— synthroid/tapazole