Unit 10 Review Chapter 10 - Blood - Anatomy And Physiology Test With Answers (Page 5 of 5) in pdf

Unit 10 Review Chapter 10 - Blood - Anatomy And Physiology Test With Answers Page 5

Hemostasis

48. During hemostasis, ___Collagen___ fibers are exposed by a break in a blood vessel and _Platelets____become

“sticky” and cling to fibers and also release chemicals to attract more platelets to form a platelet plug.

49. A hormone called __serotonin___ is released by platelets to cause vascular spasms and therefore cause blood

vessels to shorten to prevent blood loss.

50. Injured tissues will release a series of chemicals to cause a cascade of clotting which end in the production of

hair-like ___fibrin___ which forms a meshwork (the basis for a clot).

51. Blood usually clots within ___3 to 6______ minutes.

Unit 10 Review Chapter 10 - Blood - Anatomy And Physiology Test With Answers Page 5