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Lymphatic System > Lymphatic System Part 2 > Flashcards

Lymphatic System Part 2 Flashcards

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1
Q

What is the function of the Precollector

A

Uptake and transport of Lymph Fluid

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2
Q

The wall of the Lymph collectors exhibits the classic three layered structure of the entire vessel system (walls). What are they?

A

Intima
Media
Adventitia

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3
Q

What is the network of Lymph Vessels divided into?

A

Capillaries
Pre-Collectors
Collectors
Trunks

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4
Q

Describe the ‘Collectors’?

A

The Collectors have valves similar to veins which determine the direction of flow. The lymph collector segment bordered by a distal and proximal valve is known as a lymphangion. Here, the lymph flow is supported by intrinsic contractions of the lymphangion which is regulated by the sympathetic nervous system and lymph volume.

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5
Q

What are the main functions of the Lymph Nodes?

A

Filter bacteria, toxins and dead cells
Produce lymphocytes for fighting infection
Concentrate and filter lymph fluid
Regulate protein concentration in lymph

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6
Q

Approx how many litres of Lymph fluid flow is collected and returned back into blood circulation on a daily basis?

A

2 Litres

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7
Q

What are the two types of Lymphedema

A

Primary

Secondary

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8
Q

What causes Lymphedema?

A

Lymph vessels and nodes missing, damaged, removed or impaired

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9
Q

What is primary Lymphedema?

A 
Development defect (malformation, dysplasia) of lymph vessels and/or nodes.
Can be congenital or hereditary
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10
Q

Types of Congenital abnormalities?

A

Aplasia: Lymph collectors, capillaries or lymph nodes are inherently missing
Hypoplasia: The diameter of the lymph collectors is reduced and/or the number of collectors is below normal level.
Hyperplasia: The diameter of the initial lymphatics and/or lymph collectors is larger than normal.

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11
Q

What is secondary Lymphedema?

A 
Surgery for Cancer
Radiation for Cancer
Trauma
Iatrogenic
Infection
Chronic Venous insufficiency
Phlebolymphedema
Obesity
Filariasis
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12
Q

What are the Watersheds

A 
Clavicular
Spine of Scapular
Mid Sagittal
Spine
Navel - Lumbar Line
Medial Third of buttocks
Posterior Thigh
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13
Q

What intrinsic factors moves lymph through the body

A

ANS
Stretch Receptor Reflex
Automygenic

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14
Q

What extrinic mechanisms move lymph through the body?

A

Breathing
Pulsation of arteries
Skeletal Muscle Contractions
Intenstinal peristalsis

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15
Q

What factors increase lympth flow

A

Exercise
Body Temp
Increase BV Fitrate
Increased Interstitial Pressure

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16
Q

What decreases Lymph flow?

A 
Inactivity
Decreased body temperture
Paralysis of skeletal muscles
Local inflammation
Damage via surgery/trauma
Heavy pressure massage

Lymphatic System (6 decks)

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