Salivary Glands and Lymphatics Flashcards

1
Q

What drives latera and caudal folding

A

Mesoderm

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2
Q

What regulates the secretion of the lymphatic glands

A

motor and sensory nerves

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3
Q

Which nodes can you palpate for clinical assessment ?

A

Superficial Nodes

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4
Q

Which nodes are more difficult to palpate ?

A

Cervical deep lymph

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5
Q

Development of Lymph Nodes

6 steps

A
  1. Lymphatic Endothelial Cells leave the blood vessels
  2. LECs Aggregate to form Lymph sacs with groups of mesenchyme.
  3. Form the lymphatic nodules
  4. The nodules become surrounded by sinuses, with mesenchyme completing the lymph node. Start of the formation of cavities
  5. Lymphatic cells migrate from three different locations: Mesenchyme, Thymus (Pre birth), Marrow (Bone)
  6. Partition- A capsule (outside) and trabeculae (btwn the cell walls) surround the lymphatic nodules from surrounding mesenchyme.
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6
Q

Lymph node fluid is received from the

A

afferent lymphatic vessels

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7
Q

Filtered lymph collects in the

A

medulla

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8
Q

Fluid drains out the the lymph node via

A

efferent lymphatic vessel

at the hilum of the node

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9
Q

Are there more afferent or efferent lymphatic vessels?

A

Afferent ( slows down the flow of lymph)

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10
Q

Nodes are connected via

A

lymphatic vessels

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11
Q

Extracellular fluid is absorbed by lymph capillaries via

A

hydrostatic pressure

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12
Q

Lymph is filtered by

A

one or more lymph nodes before returning to venous circulation

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13
Q

The lymph node is surrounded by _______ and bands of connective tissue _______ extending from the capsule into the node

A

capsule, trabeculae

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14
Q

What is the purpose of the lymph capsule ?

A

dense connective tissue that protect the lymph

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15
Q

Tonsils can form from …

A

Lymph sacs

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16
Q

Tonsils are made from

A
  1. Un encapsulated Lymphatic tissue

2. covered in nonkeratinized stratified squamous epithelium

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17
Q

Empty acelluar portion of tonsils are called

A

Tonsillar crypts

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18
Q

Tonsilloliths

A

Tonsillar crypts can incase debris and calcifications

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19
Q

Which pouch does the tonsillar ring develop from?

A

Second pouch

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20
Q

Another name for Tonsillar Ring ?

A

Waldeyer’s Ring

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21
Q

Purpose of tonsillar ring ?

A

Immunologic protection, “First Pass” at the entrance of digestive and respiratory tracts

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22
Q

What are the four main tonsils in the ring ?

A
  1. Palantine
  2. Tubal
  3. phayngeal (adenoids)
  4. Lingual
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23
Q

Which tonsil is between palatophayngeal and palatoglossal

A

palantine

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24
Q

Which tonsil is in the lateral walls of the nasopharynx posterior to the auditory tube ?

A

Tubal

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25
Which tonsil is at the roof of the nasopharynx?
Pharyngeal (adenoids)
26
Which tonsil is at the base of the tongue, posterior 2/3rds ?
Lingual
27
Why do we need saliva ?
1. chemical break down of sugar 2. Antibacterial Combat dryness 3. Combat dryness 4. Helps remineralize the tooth surface
28
Parotid gland develops from step 1 step 2
an invagination of ectoderm between the maxillary and mandibular swelling 1. Tubular ducts sink into the mesenchyme 2. Duct opening in the mouth is transferred to the inner cheek via fusion of the max and mand swelling
29
Submandibular and sublingual glands form from ...
form similar to how parotid gland forms but in the floor of the oral cavity Forms from epithelial-mesenchymal interactions
30
Which are the major salivary glands
Parotid Gland Submandibular Sublingual Glands
31
Serous Secretion
thin, watery fluid enzymes(amylases, peroxidases, lysozyme) lactoferin immunoglobulin A
32
Lactoferrin
Chelates iron needed for bacterial growth
33
Immunoglobulin A
Neutralizes bacteria and viruses
34
Muccous Secretion
Thick fluid | Mucins (glycoproteins)
35
Saliva composition
1-1.5L produced per day Hypotonc solution (97% water containing)
36
Saliva Stimulation/Innervation
Parasympathetic- thin Saliva | Sympathetic- Thicker Mucous
37
Salivary Gland Histology
Made of epithelia and connective tissue (Encapsulated) Acinar cells
38
Acinar cells
specialized to secret all the time
39
Salivary Ducts types
Intercalated Duct Straited Duct Excretory Duct
40
Intercalated Duct
1. Receives fluid from acinus | 2. simple cuboidal epithelium
41
Striated Duct
1. Simple cuboidal to columnar epithelium 2. Produces a hypotonic saliva (via reabsorbing NaCl) 3. Secretes buffering bicarbonate into the saliva
42
Excretory Duct
1. Connect to the oral cavity 2. simple cuboidal to columnar epithelium (sometimes stratified columnar epithelium )
43
Which duct is the only one able to change the composition of saliva?
Striated Ducts
44
Which Duct delivers the product the glands produce?
Intercalated Duct
45
Which duct receives the acinus?
Intercalated Duct
46
What in saliva starts breaking down fats?
Lipase
47
Minor (intrinsic) Salivary Glands
1. In tongue and lining oral mucosa | 2. source of lipase and lysozyme
48
What can damage Minor Salivary Glands?
Mucoceles
49
How are Minor Salivary Glands names?
location (labial, buccal, lingual, etc...)
50
Which Salivary gland goes from lateral border of the face and anterior to the ear? (Near the ear)
Parotid
51
Which Salivary gland produces 25% of Saliva ?
Parotid
52
The Parotid gland excretes via ?
Parotid duct ( Stensen's Duct) Parotid papilla
53
Parotid gland is primarily _____ Secreting
Serous
54
Which salivary gland is the largest?
Parotid
55
which salivary gland is affect by mumps?
Parotid
56
Parotid gland -Serous Acini
Acinar cells contain: Enzymes ( amylase, Periosidase, Lysosyme) Antimicrobial Proteins ( cystatins and histatins)
57
Parotid gland - striated duct
carries products of acini and diluted the saliva via NaCl re absorption IgA secreted from local plasma cells
58
Which salivary gland is on the lateral border of the mandible
Submandibular salivary gland
59
Which salivary gland produces 70% of Saliva ?
Submandibualr
60
Submandibular Salivary gland secrets via
submandubular duct (Wharton's Duct) on booth sides of the lingual frenulum
61
Submandibular is mostly __________ secretions
Mostly serous but also as some Mucous acini
62
What duct are in the submandibular gland ?
Striated duct
63
What produces 5% of Saliva?
Sublingual Salivary Gland
64
Which salivary gland is below the anterior portion of the tongue?
Sublingual Salivary Gland
65
Sublingual salivary gland excretes via
1. Sublingual ducts (Bartholin's Duct) | 2. Ducts of Rivinus (in multiple locations of the floor of the tongue)
66
Sublingual salivary gland secretions....
Mostly Mucous acini and some serious acini
67
Which salivary gland is mostly mucous sections and no capsule ?
Sublingual
68
Sailvary gland stones
Sailolithiosis
69
Saliolithiosis causes
calcification of clogged duct
70
Treatment of Sailolothiosis
Prevention is with hydration Gland Massage Sour Lemon Juice to increase Salivary Flow