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Anatomy & Physiology > Lyphatic and Immune System > Flashcards

Lyphatic and Immune System Flashcards

1
Q

What are the functions of the lymphatic system?

A

Fluid recovery, immunity, lipid absorption

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2
Q

What are the components of the lymphatic system?

A
  1. lymph; 2. lyphatic vessels; 3. lymphatic tissue; 4. lymphatic organs
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3
Q

Why are the lymphatic capillaries different from blood capillaries?

A

they are closed at the end to prevent the sac from collapsing

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4
Q

What are the layers of lymphatic vessels?

A

tunica interna, tunica media, tunica externa

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5
Q

What is the route of lymph flow?

A

lymphatic capillaries, collecting vessels, six lymphatic trunks, two collecting ducts, subclavian veins

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6
Q

What are the 6 types of lymphatic cells?

A

natural killer (NK) cells, T Cells, B Cells, macrophages, dendritric cells, reticular cells

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7
Q

What are the primary lymphatic organs?

A

red bone marrow and thymus = T and B cells become immunocompetent

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8
Q

What are the secondary lymphatic organs?

A

lymph nodes, tonsils, spleen = immunocompetent cells migrate after maturity in primary organs.

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9
Q

What is lymphadenitis?

A

lymph node under challenge by antigen - painful and swollen

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10
Q

What is lymphadenopathy?

A

term for all lymph node disease

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11
Q

Why is Lymph node common site of metastatic cancer?

A

because of high permeability of lymphatic capillaries

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12
Q

Red pulp in spleen consists of ?

A

sinuses gorged with concentrated erythrocytes

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13
Q

White pulp in spleen consists of ?

A

lymphocytes and macrophages

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14
Q

What is a pathogen?

A

virus, bacteria, fungi, other microbe bacteria causing diseases

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15
Q

What are the three lines of defense against pathogens?

A
  1. skin and mucous membranes 2. leukocytes and macrophages, antimicrobial proteins, NK cells, inflammation and fever 3. immune system
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16
Q

What are the external barriers to pathogens?

A

skin and mucous membranes

17
Q

How does nonspecific resistance work?

A

guards equally against a broad range of pathogens

18
Q

How does immunity work?

A

specific defense because of prior exposure

19
Q

Characteristics of Eosinophils?

A

guard against parasites, allergens

20
Q

Characteristics of Neutrophils?

A

neutralize bacteria

21
Q

Characteristics of Basophils?

A

secrete

22
Q

What is immune surveillance?

A

NK cells continually patrol body looking for pathogens and diseased cells

23
Q

What is a fever and the stages?

A

elevated body temp.= 1. infections and secretion, 2. hypothalamic thermostat is reset to higher point, 3. onset, 4. stadium 5. infection ends, 6. defervescence

24
Q

Why do we not give Aspirin to children with fevers?

A

Reyes syndrome

25
Q

What is inflammation?

A

defensive response to tissue injury

26
Q

What are the 4 signs of inflammation?

A

redness, swelling, heat, pain

Anatomy & Physiology (9 decks)

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