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Module 2 vet med > Lymphatics > Flashcards

Lymphatics Flashcards

1
Q

The lymphatic system consists of

A

Lymph
Lymphatic vessels
Lymphatic organs and tissues

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2
Q

Primary lymphoid tissues

A

Bone marrow
Thymus
Bursa of fibricus- birds

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3
Q

Function of primary lymphoid tissues

A

Site of production of leukocytes and where immature wbcs are

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4
Q

Main roles of lymphatic system

A

Managing fluid body levels
Filtering bacteria
Housing of wbcs
Fatty acid absorption

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5
Q

Secondary lymphoid tissues

A

Lymph nodes
Tonsils
Spleen
MALT
GALT

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6
Q

Secondary lymphoid tissues function

A

Site of antigen challenge and where lymphocytes are activated

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7
Q

What way does fluid move

A

Interstitial space to blood

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8
Q

What is the function of valves

A

Prevent the backflow of blood

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9
Q

Can fluid be massaged back into the circulation

A

Yes

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10
Q

What do the lymphatic vessels carry

A

Lymph fluid

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11
Q

What are the valves shaped like

A

A V in histology

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12
Q

Two ways lymph can drain back

A

Right lymphatic duct
Thoracic duct

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13
Q

Is there a left lymphatic duct

A

No

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14
Q

What moves lymph

A

Physical pressure
Squeezing muscle
Smooth muscle
Breathing

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15
Q

Thoracic duct where does it drain to

A

Rest of the body

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16
Q

Right lymphatic duct where does it drain to

A

Right thoracic cavity
Right arm
Right side of head and neck

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17
Q

What veins does lymph fluid drain through

A

Right subclavian vein
Left subclavian vein

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18
Q

Lymphatic system components

A

Submandibular nodes
Cervical nodes
Axillary node
Thoracic duct
Inguinal node
Popiteal node

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19
Q

Lymph nodes where are they

A

Most are deep in tissues
Some are palpable

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20
Q

Lymphoid follicle components

A

Afferent lymphatic vessels
Cortex
Follicle
Medullary cord
Medullary sinus
Hilus
Efferent lymphatic vessels
Trabecula
Subcapsular sinus
Capsule
Germinal centre

21
Q

Dark stain on lymphoid follicle

A

Corona

22
Q

Trabecula

A

Fibre sections in between germinal centres

23
Q

Capsule

A

Lining on follicle

24
Q

Lymph node structure

A

Medullary sinuses
Medullary cords
Paracortical zone
Cortex- section near the top
Lymphoid follicles- at brim
Capsule- singular cell layer at top of follicle

25
Q

Where are T cells located

A

Paracortical zone

26
Q

Where are b cells located

A

Lymphoid follicles

27
Q

Red pulp

A

Lymph tissue of spleen

28
Q

White pulp

A

Follicle

29
Q

Function of spleen

A

Removal of scenescent erythrocytes- macrophages
Immune surveillance
Splenectomy

30
Q

What happens after a splenectomy

A

Increased susceptibility to bacteria infections

31
Q

PALS stands for

A

Periarteriole lymphoid sheath

32
Q

High endothelial valve function

A

Modified post capillary venules
Simple cuboidal epithelium
Enable

33
Q

Lymphocytes in blood to enter body

A

Diapedesis

34
Q

Peyers patch

A

Mucousy sections on tract

35
Q

MALT stands for

A

Mucous associated lymphoid tissues

36
Q

MALT features

A

Peyers patch- in the ileum and is known as GALT
Bronchional tissue- in lungs

37
Q

Tonsillar crypts

A

Lines in tonsils- histology

38
Q

Tonsils features

A

Oropharyngeal lymphoid aggregate
Not in course of lymphoid drainage
No major Afferent or efferent vessels

39
Q

Metasis

A

Movement of cancer cells in the body

40
Q

What do Red bone marrow cells produce

A

Production of immature T cell precursors
Production of immature B cells
Development of immunocompetent B cells

41
Q

Thymus function

A

Development of immunocompetent T cells
Proliferation of T cells

42
Q

Cranial thorax- systems

A

Trachea
Left lung
Aorta
Pulmanory trunk
Heart
Liver
Stomach
Mesentery
Colon

43
Q

Normal thymus parts

A

Medulla- in middle section
Cortex- outside layer

44
Q

Thymus does what with age

A

Regression

45
Q

Thymus is important with what

A

Immunological self tolerance

46
Q

Lymphoma is the cancer of

A

Lymph nodes

47
Q

Oedema

A

Poor drainage of fluid

48
Q

Hassals corpuscles are found in

A

Thymus

49
Q
A

Module 2 vet med (16 decks)

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