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Gross Anatomy > Lymphatic System > Flashcards

Lymphatic System Flashcards

1
Q

Lymphatic System

A

collect lymph and filters it through lymph nodes and then returns it to the bloodstream

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2
Q

Lacteals

A

in villi of SI

absorb lipids from intestines

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3
Q

Chyle

A

lymph collected by lacteals

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4
Q

Functions of Lymphatic System

A

drains interstitial fluid from tissue spaces
transports dietary lipids from GI tract to blood
Protects against invasion thru immune response

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5
Q

Lymphatic Capillaries

A

closed ended vessels b/t tissue cells

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6
Q

Lymphatic Vessels

A

runs next to A (in viscera) or V (in subcutaneous tissue)

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7
Q

Places where there are no Lymphatic Vessels

A

CNS, bone marrow, teeth, avascular tissues (cornea)

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8
Q

Vasa Vasorum

A

supply lymphatic vessels with nutrients

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9
Q

Differences from Lymphatic Vessels to Veins

A 
closed ended
larger
thinner tunics
anchoring filaments
ends of endothelial cells making up walls overlap
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10
Q

Flow of Lymph

A

Interstitial Spaces- L. Capillaries- L Vessels- L Trunks- L. Ducts- Subclavian V- Arteries- Blood Capillaries

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11
Q

9 Lymphatic Trunks

A

Lumbar, Jugular, Subclavian, Bronchomediastinal- paired

Intestinal- single trunk

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12
Q

Lymphatic Trunks pass lymph to….

A

Thoracic Duct and Right Lymphatic Duct

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13
Q

Cisterna Chyli

A

Intestinal Trunk + R and L Lumbar Trunk

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14
Q

Thoracic Duct and R Lymphatic Duct drainage

A

L and R Subclavian V

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15
Q

Control of flow of lymph from tissue space

A

contraction of skeletal muscles

valves

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16
Q

Primary Lymphatic Structures

A

Red Bone Marrow
Thymus Gland
make T, B, NK cells

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17
Q

Major Secondary Lymphatic Structures

A

lymph nodes, spleen, lymphatic nodules

most immune response

18
Q

T-Cells

A

Attack fungi, transplanted cells, cancer cells

19
Q

B-Cells

A

destroy bacteria

20
Q

Natural Killer Cells

A

attack spontaneously arising tumor cells

21
Q

Thymus

A

promote maturation of T-cells

secretes thymosin

22
Q

Thymosin

A

assists in promoting proliferation and maturation of T-cells

23
Q

Why do the Thymus and Spleen not have a filtering function?

A

they have no afferent lymphatic vessels

24
Q

White Pulp

A

part of spleen

mostly B-cells around central arteries

25
Q

Red Pulp

A

part of spleen
venous sinuses w/ blood
splenic cords b/t sinuses

26
Q

White Pulp Function

A

B-cell proliferation into plasma cells

27
Q

Red Pulp Function

A

phagocytosis of bacteria and bad RBCs and platelets

platelet reservoir

28
Q

Cortex of Lymph Nodes

A

outer region of densely packed T-cells and immature B-cells

29
Q

Medulla of Lymph Nodes

A

inner region of mature B-cells

30
Q

Germinal Centers of Lymph Nodes

A

contains masses of proliferating lymphocytes

31
Q

Medullary Cords of Lymph Nodes

A

inward extensions from cortex to hilum

T-cells, B-cells, macrophages

32
Q

Afferent Lymphatic Vessels

A

carry lymph from tissues to lymph nodes

33
Q

Efferent Lymphatic Vessels

A

carry lymph from hilum to venous circulation

34
Q

Macrophages

A

destroy foreign substances by phagocytosis

35
Q

Lymphocytes

A

destroy foreign substances by immune response

36
Q

Lymphatic Nodules

A

no capsule

clusters of lyphocytes in all mucous membranes

37
Q

Peyer’s Patches

A

lymphatic nodules in ileum

contains macrophages

38
Q

Tonsils

A

create a ring of lymph tissue around pharynx

gather and remove pathogens entering pharynx

39
Q

Adenoid Tonsil

A

in posterior wall of nasopharynx

40
Q

Palatine Tonsils

A

in posterior region of oral cavity

41
Q

Lingual Tonsils

A

at base of tongue

42
Q

Appendix

A

has large groups of lymphatic nodules

Gross Anatomy (30 decks)

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