Platelets

Question 1

Platelets are also called ________?

Answer 1

thrombocytes

Question 2

Platelets help control ______ when blood vessels are damaged.

Answer 2

bleeding

Question 3

Platelets live _____ days.

Answer 3

8-12

Question 4

Normal platelet count is ________.

Answer 4

150,000 - 400,000

Question 5

After injury to a vessel wall, platelets help form the ________ plug to help control bleeding.

Answer 5

platelet

Question 6

Define hematopoiesis.

Answer 6

the production of blood cells

Question 7

All blood cells are derived from _______ cells.

Answer 7

Pluripotent stem cells

Question 8

_________ are members of the cytokine family and help regulate blood cell production.

Answer 8

(CSFs) colony stimulating factors

Question 9

Pluripotent stem cells differentiate into either ______ or ______ stem cells.

Answer 9

lymphoid or myeloid

Question 10

lymphoid stem cells differentiate and mature into either ______, _______, or _______.

Answer 10

NK (normal killer) cells, T-cells, B-cells

Question 11

Formation of a platelet plug requires a protein called _______.

Answer 11

VonWillebrand factor

Question 12

A reduction in platelet or “low platelets” is called _____.

Answer 12

thrombocytopenia

Question 13

clumps of platelets are called ______.

Answer 13

blood clots

Question 14

A stationary blood clot is called a _______.

Answer 14

thrombus

Question 15

A traveling clot within the circulatory system is called an ______.

Answer 15

embolus

Question 16

Hypercoagulability means _______.

Answer 16

increased clotting

Question 17

thrombocytopenia is when platelets fall below ______.

Answer 17

<100,000

Question 18

Clot formation helps to stop bleeding. When platelets are low (thrombocytopenia), a person is at risk for increased _______ due to low platelets/low clot formation.

Answer 18

bleeding