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Anatomy > Lymphatic System > Flashcards

Lymphatic System Flashcards

1
Q

Where does lymph enter the vein?

A

At the junction of the internal jugular veins

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2
Q

What is the lymphatic system made up of? (5)

A

Lymphatic vessels
Lymph
Lymphoid tissue
Lymph nodes
Lymphatic organs

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3
Q

Where do the lymphatic vessels begin?

A

At the capillaries

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4
Q

What is the general function of the lymphatic system?

A

Maintains fluid balance in the body
Immunity
Fat absorption

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5
Q

What is lymph collected from?

A

Interstitial fluid, which fills spaces between cells

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6
Q

What are the lymphatic vessels?

A

Lymphatic capillaries
Lymphatic vessels (lymphatics)
lymphatic trunks
Thoracic duct and right lymphatic duct

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7
Q

What are lacteals?

A

Capillaries originating in small intestinal villi

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8
Q

Describe lymphatic capillaries

A

Only open on one end
Has clefts that interstitial fluid enters through
Has valves that ensure one way flow of lymph out of tissue

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9
Q

Describe lymphatic vessels (lymphatics)

A

Resembles veins in structure
Thinner walls
More valves
Contain lymph nodes

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10
Q

Describe lymphatic trunks, and ducts

A

Lymphatic trunks, drain lymph from lymphatic vessels

They merge to form the thoracic duct and right lymphatic duct

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11
Q

Name the 5 lymphatic trunks

A

Jugular
Subclavian
Broncomediastinal
Lumbar
Intestinal

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12
Q

Described the circulation of lymph

A

Fluids from lymphatic capillaries, to larger vessels, reenters blood at junction of internal jugular and subclavian vein

Lymphs > trunks > ducts

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13
Q

There are more afferent than efferent lymphatic vessels

A

True

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14
Q

What is the flow of lymph called?

A

Lymphokinesis

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15
Q

What affects pressure in lymphatic vessels?

A

Skeletal muscle pump
respiratory pump

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16
Q

What is a special x-ray of the lymph nodes called?

A

Lymphangiogram

17
Q

How does the skeletal muscle pump work in affecting the flow of lymph?

A

When muscles contract, they squeeze the vessels pushing liquid in one direction as well as prevent them from going backwards

18
Q

What are lymph nodes?

A

What structure is enclosed by a fibrous capsule?

19
Q

Where are lymph nodes found?

A

All along lymphatic vessels, they serve as checkpoints to filter out, harmful microbes from lymph

20
Q

Name the internal structures of a lymph node

A

Afferent vessels
Subscapular sinus
Trabecular sinus
Medullary sinus
Efferent vessel

21
Q

Name three regional lymph nodes

A

Cervical
Axillary
Inguinal

22
Q

What is the cisterna chyli?

A

Drains lymph from the digestive organs

23
Q

What are the functions of lymph nodes in terms of defense?

A

Filtration
Phagocytosis
Infection/ inflammation when overwhelmed

24
Q

Name three lymphatic organs

A

Tonsils
Thymus
Spleen

25
Q

What are the tonsils?

A

Mass of lymphoid tissue under mucous membranes in the mouth and back of throat

26
Q

Name the 3 locations of the tonsils

A

Palatine
Pharyngeal
Lingual

27
Q

Describe the thymus.
(What and where)

A

Primary organ of the lymphatic system
Located in the mediastinum

28
Q

Name the functions of the thymus

A

Vital role in immunity
Source of lymphocytes before birth
Begins secreting thymosin after birth that enables lymphocytes to develop into T-cells

29
Q

Where in the thymus do T cells mature?

A

Medulla

30
Q

Where is the spleen located?

A

In the left hypocondrium

31
Q

Name some functions of the spleen

A

Defense
Tissue repair
Hematopoiesis
RBC and platelet destruction
Blood reservoir

32
Q

What is lymphedema?

A

Blockage of lymph vessels resulting in swelling of extremities

33
Q

What is lymphangitis?

A

Inflammation of lymph vessels

34
Q

What is elephantiasis?

A

Also called filariasis
Infection caused by parasites that damages the lymphatic system

Anatomy (7 decks)

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