9. Blood histology

Question 1

what type of blood cell is this?

Answer 1

Neutrophils

49-67% of WBC

erthrocytes are arrowed

Question 2

Answer 2

eosinophils

1.5-5%

nucleus normally bi lobed

platelets arrowed

Question 3

Answer 3

basophils

0.01-0.3%

nucleus bi or tri lobed

dominant granules

platelets arrowed

Question 4

Answer 4

agranulocytes

lymphocytes

25-28%

Question 5

Answer 5

agranulocytes: monocytes

8-9%

Question 6

neutrophils function and location

Answer 6

phagocytose foreign substances

in blood, connective tissue and spleen

Question 7

eosinophils function and location

Answer 7

Involved in dampening an immune reaction after its peak, also involved in allergic reactions and asthma. Defense against parasites

Blood and most other tissues

Question 8

basophil function and location

Answer 8

Release of vasoactive substances similar to mast cells, participation in allergic reactions and asthma, allows blood to not be influenced by immune cells

blood

Question 9

lymphocytes function and location

Answer 9

specific immune response

blood and most other tissues

Question 10

monocytes function and location

Answer 10

Circulating “reserve macrophages”. Macrophages are the main phagocytic cells in the body, not as efficient can differentiate to macrophage

blood

Question 11

are white blood cell % always constant?

Answer 11

no they change with demand and can be used as diagnostic value

Question 12

types of cells in tissues and cannot be detected in blood

Answer 12

plasma cells

macrophages

mast cells:

recruit circulating
leukocytes. widening
of vessels > slower
flow, induce arrestins

> inflammation, swelling

Question 13

what are attracted to the infected site into the bloodstream? how does this arise?

Answer 13

leukocytes

Mast cells and basophils: release granules which allow leukocytes to see/ attract./ communicate

Question 14

Answer 14

macrophage

Question 15

Answer 15

plasma cells

Question 16

Answer 16

mast cells