Wk3 Lymphatic System

Question 0

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

Answer 0

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

Question 1

What are the major components of the lymphatic system

Answer 1

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

Question 2

What are lympAtic vessels?

Answer 2

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

Question 3

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

Answer 3

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

Question 4

Lymph capillaries merge to form WHAT

Answer 4

Lymphatic vessels

Question 5

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

Answer 5

Lymph nodes and finally back to the vascular system.

Question 6

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

Answer 6

Capillaries

Question 7

Lymph capillaries join to form larger??

Answer 7

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

Question 8

What are the three functions of the lymphatic systems?

Answer 8

Fluid balance
Fat absorption
Defence

Question 9

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

Answer 9

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

Question 10

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

Answer 10

Digestive tract

Question 11

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

Answer 11

They are called lacteals and the fluid is called chyle

Question 12

How does the lymphatic system defend of body

Answer 12

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

Question 13

What are the primary organs of the lymphatic system

Answer 13

Bone marrow and thymus gland.

Question 14

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

Answer 14

Lymph nodes 
Lymphatic vessels 
Lymph 
Tonsils 
Spleen 
MALT

Question 15

What is MALT

Answer 15

MucoSa associated lymphoid tissue

Question 16

Explain lymphatic drainage in a step by step process

Answer 16

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

Question 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?

Answer 17

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

Question 18

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

Answer 18

Right

Question 19

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

Answer 19

Reticular

Question 20

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

Answer 20

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

Question 21

Where is the spleen located

Answer 21

Left hypochondriac region of the abdominal cavity

Question 22

What is the structure of the spleen

Answer 22

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

Question 23

What are the functions of the spleen

Answer 23

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

Question 24

Where is the thymus gland located

Answer 24

Located in the mediastinum above the heart

Question 25

What do our tonsils do

Answer 25

Provide protection against bacteria and other harmful agents

Question 26

What are three types of lymphocytes and what they do

Answer 26

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

Question 27

What cells form memory cells

Answer 27

T helper and t cytotoxic cells

Question 28

T cytotoxic cells directly kill antigen bearing cells

True or false

Answer 28

True

Question 29

T helper cells secrete lymphokines/cytokines

True or false

Answer 29

True

Question 30

Why are lymphocytes important

Answer 30

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)