Lymphatic System Flashcards

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1
Q

Diagram

A

See notes

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2
Q

Organs linked to lymphatic system

A

Tonsils
Thymus (behind breast bone)
Spleen

Consists of one way system of dead ending vessels

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3
Q

Function of lymphatic system

A

Secondary transport system
Collects and returns excess tissue fluid to blood system.
Matures WBC

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4
Q

Structure of lymphatic system

A

Lymph vessels
Lymph nodes
Lymph

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5
Q

What is tissue fluid and how formed

A

Blood in arteries under high pressure. Pressure causes some of fluid in blood to be forced out of artery and into surrounding tissues and surrounds cells of the body.

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6
Q

ECF

A

Extra cellular fluid

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7
Q

What forces the fluid out?

A

Capillary blood pressure

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8
Q

ECF contains

A

Similar to plasma- except doesn’t contain RBC or platelets

Contains some WBC, proteins and fats

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9
Q

Why ECF has to be returned

A

Otherwise tissues would swell.
Condition- Odeoma
ECF is continually collected so must be continually removed by lymphatic system

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10
Q

How is ECF returned

A

Dead ending tubes called lymph vessels collect and return ECzf back to the blood.
Returns into the subclavian veins (near collarbone) which joins to vena cava

Some fluid returns directly to veins at the cell as there is low blood pressure

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11
Q

What is lymph

A

ECF that’s been collected and is now in lymph vessel.
Only location changes.
Contains WBC, proteins, fats

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12
Q
Lymph vessels 
Found
Contain 
Function 
Movement
A

Found: all over body
Contain: lymph
Function: returns ECF to blood.
Movement: muscular walls of vessel contracting, general bodily movement, valves present to ensure fluid flows up toward shoulder area

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13
Q

Lymph nodes
What
Where
Contains

A

What: small swellings on lymph vesse. Channel through which lymph flows.
Where: tonsils, neck, armpits
Contains: large amounts of WBC

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14
Q

Lymph nodes function

A

Fight infections by
Filtering microorganisms in the lymph as it flows through.
Matures and stores WBC called lymphocytes (produce antibodies)
When lymph nodes active they swell

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