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Flashcards in Wk3 Lymphatic System Deck (31):
0

What are the major components of the lymphatic system

It consists of a fluid (lymph)
Vessels that transport the lymph
And organs that contain lymphoid tissue

1

Fluid leaves the ________ of cvs by diffusion and ________ , most of which are returned to venue and back to CVS.
A small lil baby amount of ______ fluid and escaped proteins remained that drains into lymphatic capillaries, forming a ______ which finally back to the vascular system

Fluid leaves the CAPILLARIES of cvs by diffusion and FILTRATION, most of which are returned to venue and back to CVS.
A small lil baby amount of INTERSTITIAL fluid and escaped proteins remained that drains into lymphatic capillaries, forming a LYMPH which finally goes back to the vascular system

2

What are lympAtic vessels?

Also known as lymph vessels, are thin walled, valved structures that carry lymph.

3

Similar to a lymph vessel, what is a lymph capillary and what it do

Are tiny baby thin walled vessels located in the spaces between cells (not in the central nervous system tho and not in non vascular tissues).
Which serve to drain and process extra cellular fluid

4

Lymph capillaries merge to form WHAT

Lymphatic vessels

5

Lymphatic vessels carry lymph into and out of what ??? And where do they go back too

Lymph nodes and finally back to the vascular system.

6

Lymph _______ branch and interconnect freely and extend into almost all tissues of the body

Capillaries

7

Lymph capillaries join to form larger??

Vessels! They have thinner walls, more valves and relatively larger lumens than veins.

8

What are the three functions of the lymphatic systems?

Fluid balance
Fat absorption
Defence

9

Fluid balance is one of the functions of the lymphatic system, explain further

So, excess interstitial fluid (or tissue fluid) enters the lymphatic capillaries and becomes lymph which eventually returns to CVS

10

The lymphatic system helps absorb fat and other substances from the _____ ______

Digestive tract

11

What are the specialised lymphatic capillaries in villi of the small intestine that transport lipids called

They are called lacteals and the fluid is called chyle

12

How does the lymphatic system defend of body

By microogranisms and other foreign substances that are filtered from lymph to lymph nodes and from blood by spleen.

13

What are the primary organs of the lymphatic system

Bone marrow and thymus gland.

14

What are some secondary organs that are a component of the lymphatic system

Lymph nodes
Lymphatic vessels
Lymph
Tonsils
Spleen
MALT

15

What is MALT

MucoSa associated lymphoid tissue

16

Explain lymphatic drainage in a step by step process

Lymphatic capillary
Lymphatic vessel
Lymph node
Lymphatic vessel
Lymphatic trunk
Collecting duct
Subclavian vein

17

Lymphatic vessels from all over the body drain into the thoracic duct and from there into the subclavian vein except the upper left quadrant.
Is this true?

Nope, false. They do all drain from the body expect the upper RIGHT quandrant.

18

The right lymphatic duct receives lymph from the upper right quadrant of the body and drains into the _____ subclavian vein

Right

19

the stroma (connectivness) of lymphatic tissues is a network of ______ fibres including ct cells , fribro blasts and mcacrophages.

Reticular

20

Name some major groups of lymph nodes and where are they located

Mastoid and sub occipital nodes
Cervical lymph nodes of the neck
Axillary lymph nodes under the arms
Inguinal lymph nodes of the groin area
Popliteal nodes behind the knee

21

Where is the spleen located

Left hypochondriac region of the abdominal cavity

22

What is the structure of the spleen

White pulp- lil islands, mostly B cells
Red pulp- venous sinuses
Large number of rbcs, macrophages
Lymphocytes and other blood cells

23

What are the functions of the spleen

To filter haemoglobin (not lymph)
Removes aged/defective rbcs
Detects and responds to foreign substances (immune response)
Limited reservoir for blood
Lymphocyte proliferation

24

Where is the thymus gland located

Located in the mediastinum above the heart

25

What do our tonsils do

Provide protection against bacteria and other harmful agents

26

What are three types of lymphocytes and what they do

T cells: defend against foreign cells and tissues; coordinate immune response

B cells : produce antibodies in response antigen that attack foreign antigens

NK cells: can attack foreign cells/antigen without previous sensitisation

27

What cells form memory cells

T helper and t cytotoxic cells

28

T cytotoxic cells directly kill antigen bearing cells
True or false

True

29

T helper cells secrete lymphokines/cytokines
True or false

True

30

Why are lymphocytes important

As different types of lymphocytes in the immune system work together to keep the body safe from foreign invaders such as bacteria, viruses as well as altered cells. (Potential cancer cells)