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T1 PHYSIOLOGY > LYMPHATIC SYSTEM > Flashcards

LYMPHATIC SYSTEM Flashcards

1
Q

Name the 3 Lymphatic organs.

A
  • Red Marrow
  • Thymus
  • Spleen
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2
Q

What is the function of Red Marrow in the Lymphatic System?

A

Produces B Cells and immature T Cells (Pre-T Cells)

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3
Q

What is the function of the Thymus in the Lymphatic System?

A

Produces mature T Cells from Pre-T Cells

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4
Q

Which structure contains a large mass of lymph tissue?

A

Spleen

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5
Q

What is the function of the Spleen?

A
  • Removes ruptured RBCs

- Stores platelets and monocytes

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6
Q

Describe the mechanism of Lymphatic Capillaries.

A

In between spaces of cells, absorbing interstitial fluid in but not out

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7
Q

Describe the mechanism of Lymphatic Vessels

A

Merged from capillaries - one-way valves passing through Lymph Nodes

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8
Q

Describe the mechanism of Lymph Nodes.

A

Clusters of lymphocytes in a dense CT capsule alone the lymphatic vessels as a lymph filtration

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9
Q

Describe the Lymphatic Trunks.

A

Merged from Lymphatic Vessels

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10
Q

What are the 2 types of Lymphatic Ducts?

A
  • Thoracic Duct

- Right Lymphatic Duct

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11
Q

Explain the Thoracic Duct.

A

Drains:

  • Left head/neck/chest
  • entire body below Ribs

Into: (L) Subclavian Vein

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12
Q

Explain the Right Lymphatic Duct.

A

Drains:
- Right head/neck/chest

Into (R) Subclavian Vein

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13
Q

What is the sequence of Lymphatic Flow

A 
Blood Capillaries
Interstitial Space/Fluid
Lymph Capillaries
L. Vessels
L. Ducts
Subclavian Veins
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14
Q

What maintains Lymphatic Flow?

A
  • Skeletal muscle pump
  • Breathing/Respiratory Pump
  • Smooth muscle contractions
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15
Q

Describe the Non-Specific Defence Mechanism.

A
  • Doesn’t recognize invaders (no memory)

- Rapid response

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16
Q

Explain the defence of Skin. (1st Line Defence)

A

Sheds keratinized cells (1st Line Defence)

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17
Q

Explain the defence of Tears. (1st Line Defence)

A

Washes eyes

18
Q

Explain the defence of Saliva. (1st Line Defence)

A

Washes teeth and mucous membrane

19
Q

Explain the defence of Urine. (1st Line Defence)

A

Reduces microbial growth

20
Q

Explain the defence of Gastric Juice. (1st Line Defence)

A

Stomach destroys bacteria

21
Q

Explain the defence of Defecation and Vomiting. (1st Line Defence)

A

Removes microbes

22
Q

Function of Antimicrobial Proteins. (2nd Line Defence)

A

Discourage microbial growth

23
Q

Function of Natural Killer Cells. (2nd Line Defence)

A

Recognizes/kills microbes

24
Q

Function of Phagocytes. (2nd Line Defence)

A

Eats microbes

25
Q

Function of Inflammation. (2nd Line Defence)

A
  • Response to tissue damage

- Remove/Prevent/Prepare

26
Q

Function of Fever. (2nd Line Defence)

A

Intensifies antimicrobial activity

27
Q

What is the Specific Defences also known as?

A

Immunity

28
Q

Define Antigen.

A

Substance recognized as foreign and evokes an immune response

29
Q

Name the 2 types of Antigens.

A
  • Cell-Mediated

- Antibody-Mediated

30
Q

Explain Cell-Mediated Immune Responses.

A

Effective against Fungi / Parasites / Viruses / Cancer cells / Foreign Tissue.

T-Cells activate/enlarge/proliferate/differentiate

31
Q

What is the function of Helper T Cells?

A

Trigger Proliferation

32
Q

What is the function of Cytotoxic T Cells?

A

Migrate and destroy invader

33
Q

What is the function of Memory T Cells?

A

Stays at site and attack future infections stronger

34
Q

Explain Antibody-Mediated Immune Response

A

Effective against Body Fluids / Extracellular Pathogens

B-Cells activate/enlarge/differentiate

35
Q

What is the function of Plasma Cells in an immune response?

A

Secrete Antibodies

36
Q

What is the function of Memory B Cells?

A

Stays at site and attack future infections stronger

37
Q

Describe Antibodies/Immunoglobulins.

A

Produced by plasma cells to neutralize, inhibit, or destroy antigen

38
Q

Describe IgG.

A

Found in blood/lymph/intestines

Crosses placenta to newborn

39
Q

Describe IgA.

A

Found in sweat/tears/saliva/mucous/breast milk/GI

Decreases during stress

40
Q

Describe IgM.

A

Found in blood/lymph

Blood transfusion reaction

41
Q

Describe IgE.

A

Found in blood

Involved in allergic/hypersensitive reactions/against parasitic worms

42
Q

Describe IgD.

A

Found in blood

Activates B Cells

T1 PHYSIOLOGY (17 decks)

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