Human Anatomy & Physiology: All About Blood 4
I created these quizzes to help me study for my A&P exams. This quiz deals with blood platelets and clotting.
- 1.These are tiny fragments of membrane enclosed cytoplasm that are pinched off from giant cells in the bone marrow.
- A.
Erythrocytes
- B.
Lymphocytes
- C.
Monocytes
- D.
Megakaryocytes
- E.
Thrombocytes
- 2.The main function of platelets is _____________. One way they do this is by helping to close breaks in blood vessels by sticking to the broken surfaces and they clump together.
- 3.These are the giant cells located in the bone marrow from which platelets derive.
- A.
Erythrocytes
- B.
Lymphocytes
- C.
Monocytes
- D.
Megakaryocytes
- E.
Thrombocytes
- 4.Platelets release _________ which causes the smooth muscles in the walls of the blood vessels to contract which would decrease blood loss.
- A.
Fibrinogen
- B.
Glycogen
- C.
Seratonin
- D.
Erythropoietin
- E.
Heparin
- 5.When the smooth muscles in the walls of the blood vessels contract which leads to a decrease in blood loss, it is better known as what?
- 6.How long (approximately) is the life span of a platelet
- A.
20 days
- B.
5 days
- C.
12 days
- D.
10 days
- E.
8 days
- 7.What is the fluid portion of clotted blood called?
- 8.What are the proteins involved with clotting called?
- A.
Fibrinogen
- B.
Serum
- C.
Glycogen
- D.
Heparin
- E.
Seratonin
- 9._______ refers to the stoppage of bleeding. These mechanisms are most effective in controlling blood loss from _____________.
- 10.The next few questions deal with Hemostasis. Put the occurances in their correct sequence.Step 1 of Hemostasis
- A.
A platelet plug forms
- B.
An arteriole or venule is severed
- C.
The blood vessel spasms
- D.
Platelets release seratonin
- 11.Step 2 of Hemostasis:
- A.
A platelet plug forms
- B.
An arteriole or venule is severed
- C.
The blood vessel spasms
- D.
Platelets release seratonin
- 12.Step 3 of Hemostasis:
- A.
A platelet plug forms
- B.
An arteriole or venule is severed
- C.
The blood vessel spasms
- D.
Platelets release seratonin
- 13.Step 4 of Hemostasis
- A.
A platelet plug forms
- B.
An arteriole or venule is severed
- C.
The blood vessel spasms
- D.
Platelets release seratonin
- 14.______________ occurs when platelets adhere to the rough surfaces of the injury and to the exposed collagen in the CT that underlies the endothelial lining of blood vessels.
- 15.When platelets contact _______ their shapes change drastically. Numerous spiny processes begin to protrude from their membranes.
- 16.________ refers to platelets adhering to platelets. The platelets stick to each other at the sites of injury.
- A.
Agglutination
- B.
Coagulation
- C.
Clotting
- D.
Aggregation
- E.
Hemostasis
- 17._________ is the most effective means of hemostasis and it causes the formation of a blood clot by a series of reactions. Each one of these reactions activates the next in a chain reaction or cascade.
- A.
Aggregation
- B.
Agglutination
- C.
Coagulation
- D.
Platelet plug formation
- 18.A _________ is a gel consisting of insoluble fibers and trapped blood cells and platelets.
- 19._______ is necessary for the function of some clotting factors.
- A.
Vitamin C
- B.
Folic Acid
- C.
Vitamin B12
- D.
Iron
- E.
Vitamin K
- 20.One type of biochemical that is involved with clotting is a __________. They promote coagulation and include fibrinogen and prothombin.
- 21.Another type of biochemical that is involved with clotting is an __________. They inhibit coagulation
- 22.The basic event of coagulation is the conversion of soluble plasma protein _________ (aka _________) into insoluble threads of the protein _________.
- 23.An ___________ is triggered when blood contacts damaged blood vessel walls or tissues outside blood vessels. Damaged tissue release _______________ and this initiates a series of reactions involving several clotting factors.
- 24.__________ is associated with disrupted cell membranes and is not normally found in the blood. It is a source of __________ that provides a surface for the interaction or reaction of various clotting factors.
- 25.The next several questions will deal with clotting factors in an extrinsic clotting mechanism. Put the first 5 in the correct sequence.Step 1
- A.
Factor X is activated
- B.
Factor V is activated
- C.
Damaged tissue releases tissue thromboplastin (Factor III)
- D.
Production of the prothombin activator
- E.
Factor VII is activated which in turn becomes factor VIIa
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