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The Lymphatic System > The Lymphatic system > Flashcards

The Lymphatic system Flashcards

1
Q

The function of the lymphatic system?

A

The lymphatic system removes tissue fluid and proteins from the tissue spaces and returns it to the blood.

Plays a role in protecting the body from infection by adding leucocytes and lymphocytes to the blood.

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2
Q

What is the lymph?

A

Lymph is a pale milky-coloured fluid that is made up of approximately 95 per cent water and 5 per cent lymphocyte cells

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3
Q

The lymphatic system is made up of?

A

Lymph fluid
Lymphatic capillaries and vessels
Lymph nodes or glands
The adenoids
The tonsils
The thymus
The spleen

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4
Q

Two lymphatic ducts?

A

The right lymphatic duct and the thoracic duct.

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5
Q

What are lymphatic capillaries?

A

They are similar to blood capillaries, in that they are composed of a single layer of cells. Their walls are more permeable and allow larger particles, such as cell debris and proteins, to be absorbed.

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6
Q

What is the structure of lymphatic vessels?

A

Have thin collapsible walls and are similar to veins in structure

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7
Q

What are lymph nodes?

A

Lymph nodes are often referred to as lymph glands, even though glands usually secrete substances and lymph glands do not

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8
Q

Structure of lymph nodes?

A

Lymph nodes are made up of reticular and lymphoid tissue that is enclosed inside a tough fibrous capsule. Each node contains a network of fibres and white blood cells called lymphocytes
Small bean-shaped structures
Usually less than 2.5 cm (1 inch) in length

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9
Q

Structure of lymphatic vessels?

A

These vessels have thin collapsible walls and are similar to veins in structure

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10
Q

Adenoids

A

Lymphoid tissue found at the roof of the back of the mouth behind the soft palate.

They help to protect the throat and airways from infection.

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11
Q

Tonsils

A

Mass of lymphatic tissue. There are two tonsils at the back of the roof of the mouth, and a small pair of tonsils at the base of the tongue.

They help to protect the throat and airways from infection.

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12
Q

Thymus

A

Both a lymphoid organ and endocrine gland. Involved in the production and development of T-lymphocytes.

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13
Q

Spleen

A

Organ involved in the immune system. Similar in structure to a large lymph node.

Fights invading pathogens, controls the levels of blood cells and filters blood.

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14
Q

The function of lymph nodes?

A

Lymph nodes contain; Lymphocytes, which produce antibodies that destroy micro-organisms and fight infection. These cells work to filter and clean the lymph

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15
Q

The function of lymphatic capillaries?

A

Lymphatic capillaries join together to form larger lymphatic vessels. These vessels drain into lymphatic nodes

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16
Q

The function of lymphatic vessles?

A

Tubes that carry fluid

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17
Q

How does lymph move?

A

Lymph is pushed towards the heart by the contraction of nearby muscles.

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18
Q

The right lymphatic duct

A

This is only 1.5cm long, positioned at the root of the neck and empties into the right subclavian vein to rejoin the circulatory system

19
Q

The thoracic duct

A

This is the largest lymphatic vessel. It is 40cm long extending from the second lumbar vertebra to the root of the neck and empties into the subclavian vein to rejoin the circulatory system

20
Q

Leucocytes

A

A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue

21
Q

Lymphocytes

A

An immune cell that is made in the bone marrow and is found in the blood and in lymph tissue

22
Q

Antibodies

A

Antibodies are protective proteins produced by your immune system. They attach to antigens (foreign substances) — such as bacteria, fungi, viruses and toxins — and remove them from your body

23
Q

Antigens

A

An antigen is a substance that is capable of stimulating an immune response, specifically activating lymphocytes, which are the body’s infection-fighting white blood cells.

24
Q

The inflammatory response

A

The inflammatory response (inflammation) occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other causes.

25
Q

Immune response

A

The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.

26
Q

Adenoids

A

Lymphoid tissue found at the roof of the back of the mouth behind the soft palate. They help to protect the throat and airways from infection.

27
Q

Where are the axillary nodes located?

A

underarm area

28
Q

What is Odema?

A

Oedema is due to the abnormal swelling of body tissues due to the build up of excess fluid

29
Q

What is the term for Cancer of the lymphatic tissue?

A

HODGKIN’S LYMPHOMA

30
Q

What is LYMPHOEDEMA?

A

Oedema associated with an obstruction in the lymphatic vessels

31
Q

Lymph nodes filter……

A

the lymph

32
Q

Where does the right lymphatic duct empties into?

A

Right subclavian vein

33
Q

Where are the occipital nodes located?

A

The base of the skull

34
Q

Filtered lymph is passed into….

A

Lymphatic ducts

35
Q

Lymphatic capillaries are composed of

A

A layer of endothelial cells

36
Q

Lymphatic vessels collect lymph from…..

A

the lymphatic capillaries

37
Q

Lymphatic vessels contain valves which…

A

Keep the blood flowing in the right direction, preventing backflow

38
Q

Where does the thoracic duct drains lymph from?

A

The left side of the head

39
Q

The lymph node is covered by a wall of …

A

Connective tissue

40
Q

What has thin collapsible walls?

A

Lymphatic vessels

41
Q

What produces antibodies to help fight infection?

A

Lymphocytes

42
Q

What does the spleen store?

A

Blood

43
Q

The lymph system links to…

A

Circulatory, Muscular and digestive system

The Lymphatic System (2 decks)

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