Histo Test 2 Lymph

Front 1

Q. Lymphatic Cells:

Back 1

Lymphocytes, T Lymphocytes, B Lymphocytes, NK Cells, Antigen-Presenting Cells

Front 2

Q. Lymphatic tissue & Organs:

Back 2

Lymphatic Vessels, Diffuse Lymphatic Tissue, Lymphatic Nodules, Lymph Nodes, Thymus, Spleen, Bone Marrow

Front 3

Q. Lymphatic System Traits:

Back 3

Lymphatic Organs and Tissues constitute the immune system. Lymphatic tissues are places where the lymphocytes proliferate, differentiate, and mature.

Front 4

Q. Immune Defense types:

Back 4

Nonspecific Defenses, or Specific Defenses.

Front 5

Q. Nonspecific Defense:

Back 5

consist of physical barriers, e.g. the skin and mucous membranes. Also consist of chemical substances that neutralize foreign cells.

Front 6

Q. Specific Defenses

Back 6

antibody or humoral response, cellular immune response

Front 7

Q. antibody or humoral response:

Back 7

The production of proteins that mark invaders for destruction by other immune cells.

Front 8

Q. The cellular immune response:

Back 8

This targets transformed and virus-infected cells for destruction by lymphocytes

Front 9

Q. T-Cells(T-lymphocytes):

Back 9

T lymphocytes arise from lymphocytes that are carried from the bone marrow to the thymus gland, where they mature and become immunocompetent.

Front 10

Q. T Cells kill by:

Back 10

cytotoxic action or by activating B-cells

Front 11

Q. B-Cells:

Back 11

Come from bone marrow. They comprise 20-30% of blood lymphocytes. They are involved in the production and secretion of circulating antibodies.

Front 12

Q. Nk Cells:

Back 12

Develop from bone marrow. Constitute 5-10% of blood lymphocytes. They release perforins and fragmentins which induce these cells to self-destruct.

Front 13

Q. Antigen Presenting cells:

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break down antigens to peptides which bind to MHC II molecules. Most are mononuclear phagocytes

Front 14

Q. MHC 2:

Back 14

found only in macrophages

Front 15

Q. Diffuse Lymphatic Tissue:

Back 15

The alimentary canal, respiratory passages, and genito-urinary tract are guarded by accumulations of lymphatic tissue not enclosed by a capsule

Front 16

Q. Lymphocytes are located:

Back 16

in the lamina propria of these tracts

Front 17

Q. Plasma cells and eosinophils in this tissue indicates:

Back 17

antibody production and chronic inflammation and hypersensitivity respectively

Front 18

Q. MALT & GALT Gut-associated lymphatic tissue:

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These cells intercept antigens and initiate an immune response by traveling to regional lymph nodes where they undergo proliferation and differentiation into effector B and T lymphocytes

Front 19

Q. Primary Lymphoid Organs:

Back 19

Fetal Liver, Prenatal & Postnatal Bone Marrow, Thymus

Front 20

Q. Primary Lymphoid Organs are responsible:

Back 20

development and maturation of lymphocytes into mature immuno- competent cells, not to facilitate immune responses.

Front 21

Q. Secondary Lymphoid Organs:

Back 21

Lymph Nodes, Spleen, Mucosa Associated Lymphoid Tissue (MALT and GALT), Postnatal Bone Marrow

Front 22

Q. Thymus:

Back 22

endocrine gland that lies mostly in the superior mediastinum(above the heart)

Front 23

Q. Thymus During childhood:

Back 23

very active, but from puberty to old age undergoes progressive atrophy and produces declining numbers of mature T cells

Front 24

Q. Thymus produces:

Back 24

number of hormones that support proliferation and differentiation of T cell progenitors

Front 25

Q. Thymus contain:

Back 25

densely packed differentiating T cells

Front 26

Q. 3 hormones produced by cortex of thymus:

Back 26

thymosin, thymulin, and thymopoietin and some differentiation-inducing cytokines

Front 27

Q. Thymus Type 1 cell :

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separate the capsule and trabeculae from the cortex and surround cortical vascular elements

Front 28

Q. Thymus Type 2 cell:

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Type II cells form desmosomal junctions with each other to form small compartments full of lymphocytes

Front 29

Q. Thymus Type 3 cells:

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form occluding junctions that isolate the cortex from the medulla

Front 30

Q. Thymus Type 4 & 5:

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structural support

Front 31

Q. Thymus Type 6:

Back 31

Hassal’s corpuscle, whose function is unknown

Front 32

Q. Lymphoid Follicles:

Back 32

The loose connective tissue of the epithelial linings of the digestive, respiratory, and urinary tracts commonly contains lymphoid follicles or nodules

Front 33

Q. Lymphoid Follicle Location:

Back 33

The Tonsils, Peyer’s Patches,The Appendix

Front 34

Q. Lymphoid Follices diffuse through:

Back 34

lamina propria

Front 35

Q. Lymphoid follicle structure:

Back 35

flat epithelial cells (M cells or FAE cells) that ingest antigen and deliver them to APC’s of the GALT

Front 36

Q. Lymph Nodes:

Back 36

Numerous macrophages remove bacteria and particulate matter. Afferent lymph vessels penetrate the capsule, efferent vessels leave the hilum

Front 37

Q. B cells in lymph nodes:

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are present in the outer zone of the cortex. Germinal centers are sites of antigen-elicited B cell proliferation, also follicular dendritic cells are present

Front 38

Q. Medullary Cords of lymph nodes:

Back 38

contain large numbers of plasma cells that release their antibodies into the efferent lymph

Front 39

Q. Plasma cells live for how long:

Back 39

3 days in the medullary cords, liberating their antibodies. Some B cells are also found there

Front 40

Q. activated B cells in the cortex form:

Back 40

Plasma cells

Front 41

Q. Spleen:

Back 41

The largest lymphoid organ, contains only efferent lymphatics, dense fibroelastic capsule

Front 42

Q. Spleen Functions:

Back 42

It is the chief source of circulating antibodies. Disposal of defective red blood cells

Front 43

Q. Spleen white pulp:

Back 43

primarily lymphoid follicles

Front 44

Q. Spleen Red pulp removes:

Back 44

Worn out blood cells, Platelets, Suspended particulate matter,