L48-49: Lymphatic system I & II Flashcards Preview

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Flashcards in L48-49: Lymphatic system I & II Deck (104)
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1

What does the lymphatic system collect? (3)

Interstitial fluids, absorbed fats, leaked proteins

2

What makes the largest % of lymph (out of all the ones that it collects)?

Interstitial fluid

3

Where does the lymph system return to?

Venous system

4

Where does the lymph system NOT exist in? (everywhere EXCEPT what places) (4)

Cartilage, cornea, CNS, epidermis

5

What does the lymph system not have?

Central pump

6

Where is the lymph system open-ended? Close-ended?

Open-ended: periphery Close-ended: proximally

7

Origin of lymph is from the ________

Interstitial fluid

8

What are 3 features of the lymph capillaries?

1. Cells overlap 2. Very thin walls (same wall layers as other vessles but one endothelial cell think) 3. No tight junctions

9

What makes sure the lymph vessles "stay in place"?

Anchoring filament

10

What are 4 features of the lymphatic collecting vessels?

1. Thicker walls 2. Presence of valves 3. Superficial: travel with larger veins 4. Deep: travel with larger arteries

11

What do the valves on the lymphatic collecting vessles do?

Prevent backflow*

12

What happens to antigens if they are present in the body?

Removed

13

What "type" of lymph is going in from the periphery? What "type" is going out of the hilum?

"dirty" lymph in from periphery "Clean" lymph out from hilum

14

Lymph from intersitial spaces travels to ---> 3 things

Lymphatic capillaries

Lymphatic coll. vessles

At least one lymph node

15

Gathering of lymph nodes flow to what 3 things?

Lymphatic trunks Lymphatic ducts Venous system

16

Immunity is the response of cells and tissues to ______

Antigens

17

There are two types of immune reactions- what are they?

Innate response Adaptive response

18

What are 3 features of the innate response type of immune reactions?

1. No requirement for previous exposure 2. Non-specific response 3. Immediate and rapid response

19

What are 3 features of the adaptive response type of immune reactions?

1. Requires previous exposure 2. Recognition of diverse antigens 3. Delayed response

20

The innate immune response provides the " _____"

First line of defense

21

The innate immune response consists of cells that __, _____, or present ____.

Recruit, phagocytose, or present antigens

22

What are the two antigen-presenting cells (APCs)? What do they do?

Macrophages and dendritic cells - Trigger adaptive immune resonse

23

What is this a structure of?

Lymph capillaries

24

The lymph moves in one direction in the lymphatic collecting vessels- which direction is this?

Left to right

25

Name these innate immune response cells from left to right- also which two are APCs?

Mast cells, granulocytes, macrophages, dendritic cells

 

The macrophages and dendritic cells are antigen-presenting cells

26

In adaptive immune response, what are the main cells involved?

Lymphocytes

27

What are the two types of lympocytes?

B and T lymphocytes

28

What is the type of immune response of B lymphocytes and what are they activated by?

Humoral (antibody) immune response

Activated by: "externalized" antigens

29

What type of immune response will T lymphocytes have? What are they activated by?

Cell-mediated immune response

Activated by "internalized" antigens APCs needed

30

What are the two effectors B lympthocytes?

1. Plasma cells

2. B memory cells