leukocytes

Question 1

from most to least what is the proportion of leukocytes in blood

Answer 1

neutrophils, lymphocytes, eosinophils, monocytes, basophils

Question 2

describe the structure of neutrophils

Answer 2

many granules(not prominent) in the cytoplasm and they have a prominent, multi-lobed nucleus

Question 3

what is the function of neutrophils

Answer 3

they circulate in an inactive state, when stimulated(eg by presence of bacteria), they enter tissue and act as highly motile phagocytes

Question 4

describe the structure of eosinophils

Answer 4

prominent and many granules in cytoplasm, slightly larger than neutrophils, have a bilobed nucleus

Question 5

where do they live and what is the function of eosinophils

Answer 5

most live in spleen, lymph nodes and GI tract
function = important in inducing ad maintaining inflammation , especially in allergic reactions and asthma, also important in fighting parasitic infection

Question 6

describe the structure of a basophil

Answer 6

prominent granules in cytoplasm(stain same colour as nucleus), bilobed nucleus

Question 7

what is the function of a basophil

Answer 7

acts as an effector cell in allergic reactions

Question 8

describe the structure of a monocyte

Answer 8

numerous small lysosomal granules in cytoplasm, largest cells in blood, non-lobulated nucleus(often kidney shaped)

Question 9

what is the function of monocytes

Answer 9

serve as precursors of tissue macrophages and together form the mononuclear phagocyte system

Question 10

describe the structure of lymphocytes and name the 2 classes of them and how they are distinguished between

Answer 10

round nucleus surrounded by thin rim of cytoplasm, no visible granules
2 classes = B and T lymphocytes, cant distinguish between them

Question 11

what is the function of lymphocytes

Answer 11

both types participate in specific immune response
B cells give rise to antibody secreting plasma cells, T cells form complex set of cells that perform various defense fucntions