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Anatomy and Physiology II > Lymphatic System > Flashcards

Lymphatic System Flashcards

1
Q

Lacteals

A

specialized lymph vessels in small intestine that play a role in fat digestion; return lipids to cisterna chyli

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2
Q

How does the lymph system protect against invasion

A

Has fighters in lymph nodes that take out bacteria

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3
Q

Pulmonary circuit of heart

A

Right side

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4
Q

Systemic circuit of heart

A

Left side

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5
Q

Routes of fluid transport

A

lymph capillaries–> lymph vessels–> lymph nodes (filter)–> vessel–> lymphatic trunks–> thoracic (left) duct OR right duct–> left/right subclavian vein

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6
Q

What blood cells live in lymph node

A

Lymphocytes (macrophages)

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7
Q

purpose of subclavian veins

A

collect all lymph from body so body gets fluid back that it lost

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8
Q

What do lymph veins carry

A

lymph and some WBC no RBC!

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9
Q

Lymph vein size comparison

A

bigger than lymph capillaries smaller than veins, but same three layers

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10
Q

2 areas where lymph nodes are heavily concentrated

A

Axillary and groin

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11
Q

Cysterna chyli

A

Enlargement of the thoracic duct

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12
Q

From where does the cysterna chyli receive lymph

A

Lower abdomen, pelvis, and lower limbs

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13
Q

Hilus

A

indentation in lymph node and kidney

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14
Q

Afferent

A

SAME

Sensory=afferent (going in)

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15
Q

Efferent

A

SAME

Motor=efferent (going out)

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16
Q

How big are lymph nodes

A

0.5-1 inch

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17
Q

Tissue in lymph nodes

A

Phagocytic, reticular cortical tissue adapted to filter lymph

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18
Q

Cortex (cortical)

A

outer region (reticular cortical tissue)

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19
Q

Medulla

A

Inner region

20
Q

What kind of fibers are in lymph nodes

A

reticular fibers (reticular cortical tissue)

21
Q

What do reticular fibers in lymph nodes do

A

trap debris and bacteria; cortical tissue filters lymph and holds it

22
Q

What breaks down the tissue debris and bacteria in lymph nodes

A

Macrophages and lymphocytes

23
Q

How do Macrophages and lymphocytes break down bacteria and debris in lymph nodes

A

Either engulf or lyse (break down cell membrane)

24
Q

Trabeculae

A

Specialized bands of connective tissue that divide lymph nodes

25
Q

Afferent lymphatic vessels

A

Go INTO lymph nodes at cortical sinus

26
Q

Efferent lymphatic vessels

A

filtered lymph LEAVES lymph nodes at hilus

27
Q

Germinal layer of nodules in lymph nodes

A

harbor for lymphocytes

28
Q

Where are lymphocytes in lymph nodes

A

germinal layer of nodules

29
Q

What 2 places of body have high concentration of reticular fibers

A

lymph nodes and SPLEEN

30
Q

Sub capsule sinus

A

In lymph nodes, space under capsule that holds macrophages

31
Q

Outer cortex consists of…

A

In lymph nodes, Has nodules with germinal layer centers that HAVE B-cell lymphocytes

32
Q

Deep cortex consists of…

A

In lymph nodes, T- cell lymphocytes! (close to medulla)

33
Q

Medulla consists of..

A

In lymph nodes, medullary cords with B-cell lymphocytes and plasma cells

34
Q

Peyer’s patches

A

abdominal cavity- inside walls of small intestine that have macrophages and lymphocytes

35
Q

Thymus

A

Big gland when born then goes down in size; above heart; where T cells learn self from non self

36
Q

What are tonsils

A

NOT lymph nodes, they’re lymphatic vessels that contain lymphocytes and macrophages

37
Q

4 parts of tonsils

A

Pharyngeal (adenoids)
Palatine (the tonsils)
Lingual
Tubal (entrance: pharynx/auditory tubes)

38
Q

Largest lymphoid organ

A

SPLEEN

39
Q

Does the spleen have lymphocytes

A

Yes site for lymphocyte proliferation and immune surveillance and response

40
Q

What does the spleen store

A

breakdown products of RBC for later processing by liver AND stores platelets; iron

41
Q

Main function of spleen

A

blood-cleansing function- extracts old and defective blood cells and platelets; removal of bacteria, viruses, toxins, debris

42
Q

Spleen in fetus

A

site of erythrocyte production in fetus; function can be restored in CRISIS (ex: severe RBC depletion)

43
Q

Do lymph vessels have pressure

A

No, they get lymph back to vascular system by breathing, muscle contraction, and valves

44
Q

Thoracic duct

A

MOST lymph in body drains here; legs, and left head and arm

45
Q

Matastisize

A

When cancer has spread

46
Q

Lymphedema

A

Swelling caused from absence or malfunction of lymph vessels bc lymph isn’t draining properly back into vascular system so it accumulates

Anatomy and Physiology II (13 decks)

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