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Cardiovascular system > Coagulation and blood types > Flashcards

Coagulation and blood types Flashcards

1
Q

What are the three important physical properties of platelets?

A

Agglutination
Adhesiveness
Aggegation

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2
Q

What is agglutination?

A

Platelets clump together

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3
Q

What is adhesiveness?

A

Platelets stick to blood vessel

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4
Q

What is aggregation?

A

Platelets cluster or clot together

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5
Q

What is haemostasis?

A

The process of blood clotting

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6
Q

What is the first stage of haemostasis?

A

Activation pathways, intrinsic and extrinsic

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7
Q

What is the second stage of haemostasis?

A

Thrombin formation

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8
Q

What is the third stage of haemostasis?

A

Fibrin clot form

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9
Q

What is vasoconstriction?

A

The lumen of the blood decreases causing a temporary closure of a damaged vessel and reducing blood loss.

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10
Q

How long after injury to a vessel wall occurs does platelet formation start?

A

1-5 seconds.

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11
Q

What is fibrinolysis?

A

Physiological mechanism that dissolves clots.

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12
Q

What is plasmin?

A

It’s an enzyme that dissolves fibrin and then the clot.

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13
Q

What are the 4 blood types categorized by their number of antigens?

A

A
B
AB
O

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14
Q

True or false. Plasma types A, B, AB, and O have reversed antibodies B, A, nothing, and AB.

A

True

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15
Q

How many other antigens are present that are not important clinically but may cause problems during a blood transfusion?

A

48

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16
Q

What determines Rh-positive blood or Rh-negative blood?

A

If Rh antigen is present or absent on the red blood cells.

17
Q

For successful blood transfusion to work, what makeup of blood type and antibodies need to happen?

A

The blood type from the donor needs to not match the antibody from the receiver therefore not creating a reaction.

18
Q

Who is the universal donor?

A

O-

19
Q

Who is the universal receiver?

A

AB+

Cardiovascular system (4 decks)

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