Table 10-4 Platelet Tubules And Granules

Question 0

“Delta”-Granules (Dense bodies)

Answer 0

Location: Granulomere

Contents: Calcium, ADP, ATP, serotonin, histamine, pyrophosphatase

Function: Cobtained factors facilitate platelet aggregation and adhesion, as well as vasoconstriction

Question 1

“Alpha”-Granules

Answer 1

Location: Granulomere

Contents: Fibrinogen, platelet derived growth factor, platelet thromboplastin, thrombospondin, coagulation factor.

Function: contained factors facilitate vessel repair, platelet aggregation, and coagulation of blood.

Question 2

Dense tubular system

Answer 2

Location: Hyalomere
Function:
Probably sequesters calcium ions to prevent platelet “stickiness”

Question 3

“Lambda”-Granules (lysosomes)

Answer 3

Location: Granulomere

Contents: Hydrolytic enzymes

Function: Contained enzymes aid clot resorption

Question 4

Surface-opening tubule system

Answer 4

Location: Hyalomere
Function:
Expedites rapid uptake and release of molecules from activated platelets