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Human Physiology 2 Body System - Week 9-Blood and Immunology-blood and leucocyte Lecture 7 Flashcards | StudBud
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Human Physiology 2 Body System - Week 9-Blood and Immunology-blood and leucocyte Lecture 7
Human Physiology 2 Body System - Week 9-Blood and Immunology-blood and leucocyte Lecture 7
29 terms
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Flashcards
29 cards
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Practice quiz
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Host live
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Questions
29
Answers
1
In the sensitisation phase the production of IgE by B cells is?
T cell dependent and requires IL-4
B cell dependent and requires IL-4
T cell dependent and requires IL-3
B cell dependent and requires IL-3
2
B cells then differentiate into plasma cells and secrete specific antibodies which are?
IgB
IgG
IgE
IgD
3
What copies viral genetic material from RNA into double-stranded DNA?
Inverse transcriptase
Reverse transcriptase
Reverse protease
Inverse protease
4
Kaposi’s sarcoma is
Rare tumour of the blood vessel that is associated with AIDS
Rare tumour of the bone marrow that is associated with HIV
Rare tumour of the blood vessels that is associated with HIV
Rare tumour of the bone marrow that is associated with AIDS
5
At site of infection which cells will be activated if they encounter antigens they recognise?
Monocytes
T cells
Lymphocytes
B cells
6
what is the main defence against intracellular viruses?
Cytotoxic T monocytes
Cytotoxic B monocytes
Cytotoxic T lymphocytes
Cytotoxic B lymphocytes
7
An overactive immune response can cause what in the body
Viral infection
Bacterial infection
Autoimmune disease
Allergies
8
Which of the following is
not
one of the most likely ways HIV can be transmitted
Sexual activity
Blood
Saliva
Mother-baby
9
Antihistamines do what
block action with respect to breathing
increase action with respect to breathing
block action with respect to blood pressure
increase action with respect to blood pressure
10
An allergy causes an inflammatory immune response to a
Pathogenic antigen
Nonpathogenic antigen
Pathogenic antibody
Nonpathogenic antibody
11
Cytotoxic T lymphocytes (CTL) use viral _______ complexes to recognize infected host cells
Ag-MHC class IV
Ag-MHC class III
Ag-MHC class II
Ag-MHC class I
12
Human Immunodeficiency Virus (HIV) is considered
an RNA rotovirus
a DNA rotovirus
an RNA retrovirus
a DNA retrovirus
13
In the stages of HIV infection Seroconversion is
Viral load increases
Antibodies to virus appear, 4 to 10 weeks after infection
Symptoms usually develop, Fever, lymphadenopathy, rash
when CD4 count <200 cells/mL blood
14
Which cells respond causing tissue damage & discomfort to things like poison ivy/ chemicals
Lymphocytes
Monocytes
B Cells
T Cells
15
In a viral response Ab acts as 1.___ coating the virus for destruction by macrophages
Cytokin
Carrier
Opsonins
Target
16
What binds to viral Ag on macrophage MHC class II molecules?
Helper B cells
Cytotoxic B cells
Cytotoxic T cells
Helper T cells
17
The HIV virus binds to ______ on helper T cells
CD4 B cell
CD4 protein
CD2 B cell
CD2 protein
18
What phase is initiated when re-exposure to allergen occurs?
Sensitisation phase
Activation phase
Reactivation phase
Resensitisation phase
19
When an allergen enter the vascular system it is engulfed by phagocytes & presented to ______
Macrophages
B cells
T cells
Opsonins
20
_? allergy response is mediated by Ab & mast cells occurs after exposure to Ag called allergens
A staggered
An immediate
A delayed
A timed
21
The ______ immune response can occur by either a T cell-independent or -dependent mechanism
Intracellular
Extracellular
Endogenous
Exogenous
22
In the effector phase which of the following
is not
involved with a histamine response
difficulty in breathing (as seen in asthma)
stimulate nasal secretions
causes vasoconstriction (increase in bp)
cramp and diarrhoea due to release of gastric fluid
23
The Allergen and IgE attach to _________ which sensitises these cells to this allergen
T cells
Cytotoxic T cells
Mast cells
B cells
24
Anaphylaxis is characterised by
Hives
Peripheral circulatory failure and bronchonconstriction
All of the answers
Widespread vasodialation
25
When there is a lack of immune response the classified types are?
Secondary and Acquired
Primary and Acquired
Secondary and Genetic
Primary and Secondary
26
Components of bacterial wall activates the what system
Complement system
Primary system
Secondary system
Innate immunity
27
___? allergy response mediated by helper T cells & macrophages & takes hours to days to develop
A staggered
A timed
An immediate
A delayed
28
Ab-bound viruses cannot enter target cells
False
True
29
Macrophages can ingest bacteria either directly or after coating them with?
Opsonins
Cytotoxic T lymphocytes
Cytotoxic B lymphocytes
Kinins
