Immunology 2nd lecture Flashcards

1
Q

after _______ dies, calls the __________

A

neutrophil, dendritic cell

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2
Q

after being called, ________ goes to ___________

A

dendritic cell, regional lymph nodes

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3
Q

2 types of adaptive immune response

A

1) Humoral (immunoglobin/antibody mediated)

2) cell-mediated (T cell/lymphocyte factor)

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4
Q

Both ____ and ____ response have ______

A

innate, adaptive, humoral factors

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5
Q

All three immune responses ( 3 ) have _____ and _______ factors in the _____ immune process

A

Innate, Adaptive humoral, adaptive cell-mediated, humoral, cellular, early

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6
Q

_____ limb made of events that ________ immune response. Events from ______ immunity to interaction with the __________. This limb will have both ____ and _______ components in both _____ and ________ immune response

A

Afferent, initiate, innate, T helper (Th) CD4+ lymphocyte, cellular, humoral

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7
Q

_____ limb is the effector, or _____ aspect of immunity. In humoral response, this will be _______ molecules dissolved in _____ that will engage the _________ (also .. in fluid) In cellular response, this will be __________

A

Efferent, killer, antibody, fluid, complement system, T cytotoxic cells (Tc) CD8+ lymphocytes

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8
Q

The immune response is _____ and ____ specific

A

epitope, antigen

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9
Q

CD molecules are found on _________. They act as _____ for ____________. They ______ immune response. In immunity, they act as ____ or ____ important to the cell and initiate a _________.

A

cell surface, targets for immunophenotyping (of the cell). induce. ligands or receptors. signal cascade.

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10
Q

Three cells are called APCs ( _ _ _ ), they have a _________ and present ___ + ___. Those cells are (note the most important) …

A

antigen presenting cells, class 2 MHC and present MHC II + peptide. interdigitating dendritic cells (most important), macrophages, B lymphocytes

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11
Q

________ is __ positive and ______ is _____ positive

A

T helper cell CD4, T cytotoxic cell CD8

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12
Q

Neutrophil phagocytosis steps. (4-5). The microbial pathogen never ____ cytoplasm

A

1) Endocytosis 2) Phagosome formation 3) Fuses with lysosome, a sack of enzymes 4) Phagolysosome (digestion by enzymes) 5) Release of end products in cell and neutrophil death

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13
Q

________ found on all _________ shuts down __________ with a __________

A

MHC class 1, all cells, natural killer cell, negative signal

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14
Q

when _______ is activated (which means the __________ on the cell was ________ or ______), it releases _____________ inducing ____________ in target cell

A

natural killer cell, MHC class 1, absent or alterated, granule contents, apoptosis (programmed cell death)

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15
Q

2 types of cells activate natural killer cell because they lack ____________

A

Cancel cell and virally infected cell because they lack normal MHC class 1 molecule

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16
Q

In the innate or adaptive humoral response, three pathways that lead to ________ activation and that can be called a molecule ___________

A

innate, complement, waterfall

1) Classical pathway -> Antigen:Antibody complexes.
2) MB-lectin pathway -> Lectin binding to pathogen surfaces
3) Alternative pathway -> Pathogen surfaces (PAMPs)

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17
Q

complement __________ is important in _______ and ________ immune response

A

activation, innate, adaptive

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18
Q

Complement activation can lead to three things (3 major functions of the complement)

A

1) Recruitment of inflammatory cells (neutrophils -> major killer)
2) Opsonization of pathogens (coating them to make them more ‘tasty’ for neutrophils’)
3) Killing of pathogens -> Network of molecules drill hole in bacterial membrane

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19
Q

Each MHC has a __________ tail and a ________ where the _________ (which has no ________ in ________ cells) is presented

A

cytoplasmic, groove, peptide/epitope, specificity, dendritic cells

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20
Q

epitope

A

piece of an antigen

21
Q

Human ____ complex/system

A

HLA : Human Leukocyte Antigens

22
Q

Two classes in the HLA system and their 3 molecules

A

MHC I (HLA-A, HLA-B and HLA-C) and MHC II (HLA-DP, HLA DQ, HLA-DR)

23
Q

Each MHC has 2 _____ : ____ and ____. The ____ chain is bigger in _______ but in _________, both are _____

A

MHC 1 : big alpha chain + small beta-2microglobulin chain

MHC 2 : equal chains

24
Q

Phagocytosis in the _________ has the same steps in _________ cell, but in _____ cell, an ________ is presented on the surface

A

neutrophil, dendritic, dendritic, epitope

25
Q

2 times in dendritic cell’s life

A

Phagocytic digestion phase (when pathogen digested and epitopes obtained) and synthetic phase (synthesis of MHC class II to bring epitopes to surface)

26
Q

For following classes, subject will mostly be ______, which induce _________ immune response (note : ________ induce __________ immune response)

A

bacteria, humoral immune response, viruses, cell mediated immune response

27
Q

What is the front 4 in immunity

A

Skin, mucus, cilia, fluid mucin

28
Q

Sepsis

A

Body’s reponse to infection injures own tissues and organs

29
Q

Link between innate and adaptive immune response : interaction between __________ cell and _________ molecule on __________ cell. (each one is specific to one _________ out of _________)

A

dendritic, specific, T helper, epitope, 100 billion

30
Q

where antibodies produced

A

B lymphocytes in bone marrow

31
Q

what cells are necessary for cell-mediated response

A

T cells

32
Q

What cells do B lymphocytes need to produce antibodies

A

T helper cell

33
Q

At some point, ________ become _______

A

T cells become T helper cells

34
Q

In utero, migration traject of immune stem cells

A

Yolk sac, fetal liver, Bone marrow, thymus

35
Q

Where are pre B cells formed and from what

A

In bone marrow, out of stem cells

36
Q

What cells mature in bone marrow and what do they become (and acquire)

A

Pre B cells mature to become B cells. they acquire specificity

37
Q

The ________ cell is double _________ before being ____________

A

Pre T. CD4 and CD8 positive before release by the thymus

38
Q

What cells move to the thymus

A

Stem lymphocytes (Pre T cells)

39
Q

When _______ move out of thymus, they are either ____ or ________

A

T cells, CD4 + or CD8 +

40
Q

Mature _____ and _____ cells move to ___________ which are _____, ____ and _______

A

B and T cells, secondary immune system organs, lymph nodes, spleen (large lymph node) and MALT

41
Q

In lymph node, ____ cells are in the _________ and ____ cells are in the _________ and the _______.

A

B cells in superficial cortex and T cells in deep cortex and medullary area

42
Q

In lymph node, _______ cells goes in area between ________ and ______

A

dendritic cell between T and B cells

43
Q

when B and T cells move to secondary organs

A

before birth

44
Q

Dendritic cell has a ________ and finds the __________ cell with a _________ that is ________ to it

A

specific epitope, T helper cell (CD4+), receptor, specific

45
Q

Dendritic cells carries bacteria in 2 ways

A

Outside held by dendrites and phagocyted inside

46
Q

_______ is necessary for an immune response to be started. It happens when _______ receptor on ____ cell binds/interact with _____ molecule that protrudes from the __________

A

Coreception. CD28. T helper cell. B7 molcule. dendritic cell

47
Q

4 classical signs of inflammation

A

Calor (heat), Dulor (pain), Rubor (redness), Tumor (swelling)

48
Q

true or false ? MHC class 2 can exist on surface of professional Antigen Presenting Cells independently of an epitope bound to its groove

A

false (verif avec reponses Qs 2)