MCQs

Question 1

Bacteraemia

Answer 1

Is where the the blood system is infected by a microorganism

Question 2

Helper T cells (CD4+ T cells)

Answer 2

help activate and coordinate other immune cells, such as B cells, cytotoxic T cells by releasing cytokines

Question 3

Cytotoxic T cells (CD8+ T cells)

Answer 3

recognise and kill infected or tumour cells by inducing apoptosis

Question 4

Regulatory T cells (Tregs)

Answer 4

help maintain immune tolerance by suppressing overactive immune responses and preventing autoimmune diseases

Question 5

Antibodies

Answer 5

bind to pathogen, neutralising, tagging for destruction by phagocytosis.

Question 6

Macrophages

Answer 6

A phagocyte
engulf and digest pathogens. Activate adaptive. Presenting antigens to T cells

Question 7

Neutrophils

Answer 7

kill pathogens through phagocytosis

Question 8

Dendritic cells

Answer 8

act as messengers between innate and adaptive system by presenting antigens to T cells

Question 9

Natural killer cells

Answer 9

recognise and destroy infected or cancerous cells by inducting apoptosis without the need for antigen presenting

Question 10

Mast cells

Answer 10

release histamine during allergic reaction to help defend against pathogens

Question 11

Eosinophils

Answer 11

fighting parasitic infection, play role in allergic reactions

Question 12

Basiphils

Answer 12

release histamine during allergic reaction, defence against parasites

Question 13

T-cells

Answer 13

Responsible for cell mediated immunity

Question 14

B cells

Answer 14

Responsible for humoral immunity