Page 518 - Clinical Hematology_ Theory _ Procedures ( PDFDrive )

502 PART 7 ■ Principles and Disorders of Hemostasis and Thrombosis

REVIEW QUESTIONS (continued)

*12. Which o the ollowing is not correct? 18. At ll ti es, pproxi tely o the tot l nu ber

A. V soconstriction re uces bloo ow n pro otes o pl telets re in the syste ic circul tion.

cont ct ctiv tion o pl telets n co gul tion A. one ourth

ctors. B. one thir

B. Pl telets here to expose en otheli l connective C. one h l

tissues. D. two thir s

C. Aggreg tion o pl telets rele ses thro box ne A 2

n v so ctive ines (serotonin n epinephrine). 19. T e re erence r nge o pl telets in the syste ic circul -

D. None o the bove. tion is

A. 50 to 150 × 10 /L
9
13. Which o the ollowing is ( re) true o B. 100 to 200 × 10 /L
9
en ore uplic tion? C. 150 to 350 × 10 /L
9
A. Duplic tes DNA without cell ivision D. 150 to 400 × 10 /L
9
B. Results in cells with ploi y v lues o 4n, 8n, 16n,

n 32n 20. T e unctions o pl telets in response to v scul r -

C. Is unique to the eg k ryocytic type o bloo cell ge inclu e

D. All o the bove A. inten nce o v scul r integrity by se ling inor

e ects o the en otheliu

*14. Which o the ollowing is ( re) true o thro bopoietin? B. or tion o pl telet plug

A. T ought to sti ul te the pro uction n tur - C. pro otion o f brinolysis

tion o eg k ryocytes D. ll o the bove

B. Is in uence by v rious cytokines, which incre se

eg k ryocyte size 21. I v scul r injury exposes the en otheli l sur ce n

C. Is in uence by v rious cytokines, which i p ct un erlying coll gen, pl telets (21A) to the col-

tur tion l st ge n ploi y l gen f bers n (21B) .

D. All o the bove A. here

B. ggreg te

*15. Which o the ollowing is not ch r cteristic o C. o not here

pl telets? D. both n b

A. Te presence o nucleus

B. Li e sp n o 9 to 12 ys. 22. T e en pro uction o occurs with

C. Cytopl s is light blue with ine re -purple pl telet ggreg tion.

gr nules. A. thro box ne A 2

D. A iscoi sh pe s n in ctive cell. B. cyclooxygen se

C. prost cyclin

16. T e cellul r ultr structur l co ponent unique to the D. r chi onic ci

pl telet is the

A. cytopl s ic e br ne *23. Agents th t re c p ble o ggreg ting pl telets inclu e

B. glycoc lyx A. coll gen

C. itochon rion B. thro bin

D. icrotubule C. serotonin

D. ll o the bove

*17. Choose the incorrect st te ent reg r ing stor ge gr n-

ules rel te to he ost sis in the ture pl telet. 24. Ex in tion o Wright-st ine peripher l bloo

A. Alph -gr nules cont in pl telet ctor 4, bet - s e r provi es n esti te o pl telet nu bers. Using

thro boglobulin, n pl telet- erive growth 100× (oil) i ersion in the re s o erythrocytes just

ctor. touching e ch other, the upper li it o the nu ber o

B. Alph -gr nules cont in pl telet f brinogen n von pl telets seen per f el shoul not excee

Willebr n ctor. A. 10

C. Dense bo ies cont in serotonin n ADP. B. 15

D. Lysoso es cont in cto yosin, yosin, n C. 20

fl in. D. 25