Immune

Question 1

Function of Leukocytes (white blood cells)

Answer 1

Protection against bacteria, viruses, parasites, toxins, tumor cells. Can leave bloodstream to mount immune and/or inflammatory response

Question 2

How do Leukocytes know where to go?

Answer 2

Chemotaxis- Signals released from infection site

Question 3

Types of Leukocytes

Answer 3

Granulocytes (Neutro, Eosino, Basophiles) and agranulocytes (Lympho, monocytes)

Question 4

Percentage ranking of types of Leukocytes

Answer 4

Never Let Monkeys Eat Bananas

Neutrophiles, Lympocytes, Monocytes, Eosinophiles, Basophiles

Question 5

Types of Granulocytes

Answer 5

Neutrophils
Eosinophils
Basophils

Question 6

Neutrophils

Answer 6

Granules contain hydrolytic enzymes and defensins- some antibiotic-like proteins, polymorphic leukocytes.

Phagocytes!!!- they ingest and destroy bacteria (ie acute infections like meningitis, appendictitis)

Question 7

Eosinophiles

Answer 7

coarse, red granules, parasitic worms cannot be phagocytized but are surronded and release digestive enzymes

Question 8

Basophils

Answer 8

Rarest WBCs, cytoplasmic granules contain histamine (vasodilator, makes blood vessels leaky and attracts other WBCs!!)

Question 9

Types of agranulocytes

Answer 9

Lymphocytes (T cells and B cells)
Monocytes

Question 10

Function of T cells

Answer 10

Act directly against virus-infected cells, tumor cells. Go to thalamus gland to get tested. Made in bone marrow

Question 11

Function of B cells

Answer 11

Give rise to plasma cells that produce antibodies. Made and tested in bone marrow

Question 12

Function of monocytes

Answer 12

Differentiate into macrophages

Question 13

Innate defenses

Answer 13

Surface barriers and internal defenses (phagocytes, natural killer cells, inflammation, antimicrobial proteins, fever)

Question 14

Adaptive defenses

Answer 14

Humorla immunity (b cells), cellular immunity (t cells)