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lymphatic system > Parts and what it does > Flashcards

Parts and what it does Flashcards

1
Q

Functions of lymphatic system

A

Returns lymph to blood
Transports lipids and lipid soluble vitamins (A,D,E and K) to veins
Immunity

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2
Q

Anatomy of lymphatic stuff

A

Ducts
Trunks
Vessels
Capillaries
Nodes

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3
Q

What do lymphatic capillaries do?

A

Go between body tissues and capillaries
Collect water, solutes, and leukocytes from interstitial space which creates lymph

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4
Q

What creates mini valves in lymphatic capillaries?

A

Cells are not tightly joined but overlap loosely

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5
Q

What opens the lymphatic valves in lypmhatic capillaries?

A

Increase in interstitial fluid
Causes fluid to enter the capillary

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6
Q

What closes the valves in lymphatic capillaries?

A

Increased fluid in capillary

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7
Q

What are lacteals

A

Specialized lymph capillaries located within villi of small intestine

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8
Q

What do lacteals do?

A

Absorb fats/lipids

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9
Q

Lymph goes into lymphatic vessels under ___ pressure?

A

Low

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10
Q

Flow of lymph

A

Lymphatic capillaries
Lymphatic vessels
Lymphatic trunks
Lymphatic ducts
Subclavian veins/ internal jugular
Heart

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11
Q

What are the 2 lymphatic ducts?

A

Right lymphatic duct
Thoracic duct

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12
Q

What does right lymphatic duct drain?

A

Collects lymph from upper limb
Thorax
Head
Neck
All on right side

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13
Q

What does thoracic duct drain?

A

Lower limbs
Abdominopelvic regions
Upper limb, neck, head on left side

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14
Q

Thoracic duct description

A

Runs along dorsal body wall
Retroperitineal
Arises from cisterna chyli

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15
Q

What helps move lymph?

A

Contraction of smooth muscles
Contraction of skeletal muscles
Respiratory pump

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16
Q

What are antigens?

A

Substances that causes an immune response

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17
Q

What are examples of pathogens?

A

Bacteria
Viruses
Tumor cells

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18
Q

2 main groups of leukocytes?

A

Granulocytes
Agranulocytes

19
Q

What are the granulocytes?

A

Neutrophils
Eosinophils
Basophils

20
Q

Neutrophils description

A

First one on the scene
3-5 lobes
Eat and destroy bacteria

21
Q

Eosinophils

A

2 lobes
Attack objects covered in antibodies
Eat parasitic worms
Help control/ reduce inflammation
Respond to allergens

22
Q

Basophils

A

Lot’s of granules
Start inflammation process
Release histamine
Release heparin

23
Q

What does histamine do?

A

Dilates blood vessels and attracks WBC to inflamed site

24
Q

What does heparin do?

A

Prevents blood clotting

25
Q

What are the agranulocytes?

A

Monocytes
Lymphocytes

26
Q

Monocytes description

A

Largest Leukocytes
U shaped nucleus
Transform into macrophages that become eater cells
Attract other phagocytic cells and fibroblasts

27
Q

Lymphocyte types

A

T cells
B cells

28
Q

What do T cells do?

A

Kill virus
Infected cells
Tumor cells

29
Q

What do B cells do?

A

Produce antibodies that tag foreign substances and cells for destruction

30
Q

What do primary organs of lymphatic system do?

A

Where immune cells divide and mature

31
Q

What do secondary organs of lymphatic system do?

A

Where lymphatic cells are stored and immune response occurs

32
Q

What does red bone marrow do?

A

Form the leukocytes
Where B cells are matured

33
Q

What does thymus do?

A

Produces thymosin that matures T cells

34
Q

What happens to thymus as we get older?

A

Turns into fatty tissue

35
Q

What is function of lymph nodes?

A

Filters lymph and monitors body fluids

36
Q

Where are lymph nodes found?

A

Along lymphatic vessels

37
Q

White side of spleen?

A

Filters and cleanses blood

38
Q

Red side of spleen?

A

Destruction of old erythrocytes

39
Q

What do tonsils do?

A

Collect pathogens that enter mouth and nasal cavity

40
Q

Pharyngeal tonsils

A

Posterior side of nasopharynx

41
Q

Palantine tonsil

A

Paired on the lateral walls of oral cavity

42
Q

Lingual tonsil

A

base of tongue

43
Q

Peyers patches

A

In walls of small intestine

44
Q

What does appendix do?

A

Destroys bacteria
Prevents bacteria from breaching intestinal wall

lymphatic system (3 decks)

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