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oral cavity - BDS 1 > lymphatic drainage :) from pp > Flashcards

lymphatic drainage :) from pp Flashcards

1
Q

lymphatic system

A

Network of lymphatic vessels which begin in peripheral tissues and end at connections to veins.

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2
Q

lymph

A

fluid simular to plasma

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3
Q

lymphoid organs

A

Connected to the lymphatic vessels and contain large numbers of lymphocytes.

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4
Q

functions of lymphatic system

A
  1. The production, maintenance and distribution of lymphocytes
  2. The return of fluid and solutes from peripheral tissues to the blood
  3. The distribution of hormones, nutrients, and waste products to the general circulation
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5
Q

lymphatic vessels

A

Lymphatic capillaries unite to form increasingly larger vessels

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6
Q

where do larger lymphatic vessels feed

A

into collecting ducts which empty into the venous system

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7
Q

what are larger lymphatic vessels interrupted by

A

lymph nodes

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8
Q

what do lymphatic vessels commonly occur in associated with

A

blood vessels

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9
Q

what are the two sets of lymphatic vessels that collect lymph from lympatic capillaries

A

superficial

deep

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10
Q

superficial lymphatic vessels

A

variabel distribution e.g. in subcutaneous deep layer to skin

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11
Q

deep lymphatic vessels

A

larger

more constant vessels that accompany deep arteries and veins supplying skeletal muscles and orgs

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12
Q

clinical importance of infection

A

infections often spread through lymphatic vessels

lymph nodes produce a response to the infection by enlarging

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13
Q

what do malignant cells often do

A

lose their desmosomal attachments to each other

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14
Q

where do malignant cells migrate

A

through lympatic vessels into lymph nodes where they form secondary growths

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15
Q

where do the lymphatic capillaries start

A

in the same regions are capillary beds

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16
Q

what is filtered through the nodes and what is in the nodes

A

lymph is filtered through the nodes

lymphocytes there

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17
Q

what are peripheral tissues bathed in

A

interstitial fluid

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18
Q

what happens at capillary beds

A

some liquid passes out from the plasma into the interstitial space
enters the lymphatic capillaries

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19
Q

what happens if there is a build up of interstitial fluid

A

regional swelling (odema)

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20
Q

what is also in the interstitial space

A

cells

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21
Q

what are the main collecting ducts

A

thoracic duct

right lymphatic duct

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22
Q

thoracic duct

A

collects majority

collects from all vessels from the left side and below the diaphragm

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23
Q

path and start of the thoracic duct

A

lymphatic thinks form the cisterns chyli
travel up as the thoracic duct
drains at the junction between subclavian and jugular trunk on the left

24
Q

right lymphatic trunk

A

drains the arm
head and neck
formed from right jugular and subclavian

25
Q

what is in the lymphatic vessels

A

have valves to prevent lymph from flowing the wrong way

26
Q

how is lymph moved in the system

A

via muscle contraction

compression of abdominals and breathing (thoracic duct)

27
Q

what are the lymph nodes of the head and neck

A 
pre auricular 
post auricular/mastoid
occipital
submental
submandibular
superficial cervical 
deep cervical
28
Q

superficial cervical

A

chain of lymph nodes
along the external jugular vein
over the top of sternocleidomastoid

29
Q

deep cervical

A

along the internal jugular vein

underneath/deep to sternocleidomastoid

30
Q

what does the pre auricular drain

A

anterolateral scalp
eyelids
cheeks

31
Q

what does the submental drain

A 
central lower lip
chin
floor of mouth
tip of tongue
incisor teeth
32
Q

what does the post auricular drain

A

posteriolateral scalp

33
Q

what does the occipital drain

A

posterior scalp and neck

34
Q

what does submandibular drian

A

face
gingivae
teeth
tongue

35
Q

which nodes drain directly into the deep cervial nodes

A

pre auricular
submandibular
submentla

36
Q

which nodes pass into the superficial nodes and then where next

A

occipital and post auricular

onto deep nodes

37
Q

where do the deep cervial nodes go

A

form right and left jugular trunks

empty into the right lymphatic duct or thoracic

38
Q

where does the majority of the oral cavity drain

A

into submandibular nodes

39
Q

what drains into the submental

A

skin of lip
floor of mouth
incisors

40
Q

what drains into the deep cervical lymph nodes within the intraoral

A

rear molars

soft palate

41
Q

what can spread easily to the lymph nodes

A

oral squamous cell carcinoma

42
Q

lymphatic drainage of the tongue - nodes

A

submental
submandibular
juglodigastric
juguloomohyoid

43
Q

where does the posterior 1/3 of the tongue drain

A

into juglodigrastric nodes (of the deep cervical chain)

44
Q

where does the anterior 2/3 tongue drain

A

directly into the deep or

indirectly via submetall and submandibular

45
Q

where does the tip of the tongue drain

A

submittal and then jugloomohyoid

46
Q

what cervical nodes can be palapted and when

A

jugulo-omohyoid and juglodigastric

when enlarged

47
Q

where is the juglodigastric found

A

intersection of the internal jugular vein and posterior belly of digastric

48
Q

where is juglo omohyoid

A

near intermediate tendon of omohyoid

sternocleidomastoid runs over it

49
Q

what is the midline raphe and where does it run

A

dense band of connective tissue

deficient at the tip ad posterior 1/3

50
Q

what does the raphe form and what does this mean

A

impervious lymph barrier

lymph cannot diffuse accords the raphe

51
Q

drainage of the tongue

A

bitalterla at tip and posterior 1/3

ipsilateral for remaining anterior 2/3

52
Q

what is lymph node elangment known as

A

lymphadenopathy

53
Q

malignant cells

A

atypical in appearance

lose their desmosomal attachments to each other and eCM

54
Q

migrating cancer

A

through lympathic vessels into lymph nodes where they can form secondary growths (metastasis)

55
Q

what happens if lymph node burst

A

can spread into near tissues

extra capsular spreading

oral cavity - BDS 1 (66 decks)

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