Immunology Exam 1 (Hector's Version)

Question 1

what are the three lines of defense

Answer 1

Innate defenses: Surface barriers and internal defenses
Adaptive: T and B (humoral/cellular)

Question 2

first line of defense

Answer 2

Surface barriers:
Skin (barrier)
Mucous membranes
Chemicals/enzymes
Always on
0-4 hours

Question 3

second line of defense

Answer 3

Phagocytes
Fever
NK cells (kill our infected cells)
Antimicrobial proteins (Chapter 2)
Defensins
Cathelicidins
Complement proteins

Question 4

third line of defense

Answer 4

T and B cells
Immunity you create over time
Recognizes specific foreign substances
Acts to immobilize, neutralize, or destroy foreign substances
Amplifies inflammatory response and activates complement.

Question 5

properties of B cells

Answer 5

B Cells: protect you from infection by making proteins called antibodies.
B-cells are a type of white blood cell called lymphocytes. When your immune system detects antigens — markers that indicate a threat like a bacteria or virus has entered your body — your B-cells produce antibodies to fight the invader.

Question 6

properties of T cells

Answer 6

wipe out infected or cancerous cells. They also direct the immune response by helping B lymphocytes to eliminate invading pathogens

Question 7

Describe the overall function of primary lymphoid tissue.

Answer 7

They create special immune system cells called lymphocytes

Question 8

what are the primary lymphoid tissues

Answer 8

bone marrow and thymus