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Physio Fall 22 > L18- Blood > Flashcards

L18- Blood Flashcards

1
Q

Hematology

A

Study of blood

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2
Q

Hematopoiesis

A

Formation of blood cells ( formed elements)

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3
Q

Hemoglobin

A

Transports o2(co2 & buffer)

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4
Q

Hematocrit

A

% of blood volume that is RBC

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5
Q

Hemostasis

A

Blood clotting

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6
Q

Hemostat

A

Instrument used in operating room to stop blood flow

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7
Q

Blood is made up of what two things

A

Plasma & blood cells ( formed elements)

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8
Q

Erythrocytes

A

Red blood cells
- make up 44% of whole blood

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9
Q

Buffy coat includes

A

Platelets = thrombocytes

Leukocytes = white blood cells

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10
Q

What are the five types of leukocytes

A

Neutrophils, basophils, eosinophils, monocytes & lymphocytes

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11
Q

Plasma is made up of

A

Water
Proteins
& other solutes
- makes up 55% of blood

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12
Q

What is the normal hematocrit (% RBC) for men and women

A

Women = 36%- 46%

Men = 41%- 53%

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13
Q

Hematopoiesis

A

Formation of blood cells

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14
Q

Erythropoiesis

A

Formation of red blood cells ; kidney releases erythropoietin as blood o2 decreases

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15
Q

Leukopoiesis

A

Formation of white blood cells

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16
Q

Thrombopoiesis

A

Formation of platelets

17
Q

How long is the life span of red blood cells.

A

120 days - 3 months

18
Q

How long is the lifespan of megakarycocytes

A

5-9 days

19
Q

Lifespan of B & T lymphocytes

A

100-300 days

20
Q

What initiates hemostasis?

A

Vascular injury ➡️ collagen to be exposed ( where platelets come in contact)

21
Q

What are the 3 phases of hemostasis?

A
  1. Vasoconstriction
  2. Platelet plug
  3. Coagulation: clot forms
22
Q

Vasoconstriction

A

Muscles contract

23
Q

Platelet plug

A
  • exposes collagen activating platelets to
    ➡️ release factors
    ➡️ making them sticky ( causing them to stick together)
    Forming a plug
24
Q

Coagulation clot forms by

A

By thrombin Converting soluble fibrinogen into insoluble fibrin ➡️ bind to platelets ➡️ clot to form

25
Q

Clotting factors are inactive blood proteins made by the liver

TRUE or FALSE

A

True; they are inactive in the blood then they become active once they come in contact with calcium

26
Q

Hemophilia

A

Genetic disorder, missing clotting factor

27
Q

What is found in a clot

A

Fibrin, platelets, and trapped red blood cells

28
Q

What is released to dissolve clots once a cut is healed?

A

Plasmin

29
Q

Serum

A

Plasma - clotting factors

30
Q

Glass tubes prevent clotting of blood

TRUE or FALSE

A

False; plastic tubes prevent blood from clotting in a test tube

31
Q

What causes fibrinogen to be converted into fibrin

A

Thrombin

Physio Fall 22 (24 decks)

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