PLATELET LEC

Question 1

small packages of cytoplasm that are nipped off from the cytoplasm of megakaryocytes

Answer 1

PLATELETS

Question 2

nipped off from the cytoplasm of megakaryocytes through the process known as

Answer 2

THROMBOPOIESIS

Question 3

Platelet is considered as true cell.
TRUE OR FALSE

Answer 3

FALSE

Question 4

precursor of platelet

Answer 4

MEGAKARYOCYTE

Question 5

4 STAGES OF MEGAKARYOPOIESIS

Answer 5

1.Megakaryoblast
2.Promegakaryocyte
3. Megakaryocyte
4. Metamegakaryocyte

Question 6

Metamegakaryocyte

Answer 6

FUTURE PLATELET

Question 7

resembles myeloblast and pronormoblast

Answer 7

MEGAKARYOBLAST

Question 8

Cytoplasm is abundant, minimal lobularity

Answer 8

PROMEGAKARYOCYTE

Question 9

most immature stage

Answer 9

MEGAKARYOBLAST

Question 10

Nucleus is lobulated and basophilic

Answer 10

MEGAKARYOCYTE

Question 11

Cytoplasm is granular and azurophilic with DMS

Answer 11

MEGAKARYOCYTE

Question 12

extension of cytoplasm

Answer 12

DMS

Question 13

COLOR PRESENT IN MEGAKARYOCYTE

Answer 13

DARK BLUE DEMARCATION

Question 14

HORMONE INVOLED IN PLT

Answer 14

THROMBOPOIETIN

Question 15

Nucleus of MKI

Answer 15

Round

Question 16

Nucleus of MKII

Answer 16

Indented

Question 17

Nucleus of MKIII

Answer 17

Multilobed

Question 18

Chromatin of MKI

Answer 18

Homogenous

Question 19

Chromatin of MKII

Answer 19

Moderately condensed

Question 20

Chromatin of MKIII

Answer 20

Deeply and variably condensed

Question 21

Endomitosis of MKI

Answer 21

Present

Question 22

Endomitosis of MKII

Answer 22

Ends

Question 23

Endomitosis of MKIII

Answer 23

Absent

Question 24

SIZE of plt:

Answer 24

2-4 um

Question 25

MPV:

Answer 25

7fL

Question 26

Lifespan:

Answer 26

9-10 days

Question 27

Normal count

Answer 27

150-450X10^9/L

Question 28

Type of Platelet

Answer 28

a. resting platelet b. stress platelet

Question 29

resting platelet

Answer 29

(circulatin g platelet)

Question 30

stress platelet

Answer 30

(reticulated platelet)

Question 31

Size and shape of resting plt

Answer 31

Normally biconvex

Question 32

Markedly larger than normal platelet >6 um

Answer 32

Stress platelet

Question 33

MPV of stress plt

Answer 33

12-14 fL

Question 34

Citrated blood: cylindrical

Answer 34

Stress plt

Question 35

Wright stained smear: circular/ irregular

Answer 35

Resting plt

Question 36

Carry ribosomes and fragments of RER

Answer 36

Stress plt

Question 37

Flow smoothly in vein

Answer 37

Resting plt

Question 38

direct communication with extracellular environment

Answer 38

Open canalicular system

Question 39

site of arachidonic acid synthesis

Answer 39

Dense tubular system

Question 40

platelet fibrinogen

Answer 40

PF 5

Question 41

anti-heparin factor

Answer 41

PF 4

Question 42

lipoprotein

Answer 42

PF 3

Question 43

Inhibits antithrombin II

Answer 43

PF 2

Question 44

Plasma coagulation factor V

Answer 44

PF 1

Question 45

adheres to detached/injured endothelium

Answer 45

Adhesion

Question 46

platelet release reaction

Answer 46

-alpha and dense granules release substance -shape change

Question 47

glycoprotein and fibrinogen

Answer 47

Plt agreggation

Question 48

serotonin

Answer 48

Vasoconstriction

Question 49

clot formation:

Answer 49

PF3