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2240 Cardiovascular system > Blood > Flashcards

Blood Flashcards

1
Q

Functions of blood

A

Transportation
Regulation
Protection

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2
Q

PH level of blood

A

7.35- 7.45

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3
Q

Erythrocytes

A

Biconcave shape
No nucleus
Live for around 120 days
Packed with hemoglobin

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4
Q

Function of hemoglobin

A

Carries oxygen

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5
Q

What is hemoglobin made of?

A

Globin
Heme
Iron

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6
Q

Globin

A

Protein chains in 4 subunits

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7
Q

Heme

A

Pigment molecule
There is one for each protein subunit

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8
Q

Iron (hemoglobin)

A

Center of each heme
Binds individual oxygen molecules

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9
Q

Oxyhemoglobin

A

Add O2
Bright red

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10
Q

Deoxyhemoglobin

A

No O2
Dark Red

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11
Q

How are blood types determined?

A

By their antigens
These can cause an immune response which result in antibody production

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12
Q

Where are antibodies located?

A

In the plasma

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13
Q

What is true about Rh+ blood types?

A

Rh antigen is present
No antibodies will EVER form

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14
Q

What is true about Rh- blood types

A

No Rh antigen present
No anti D antibodies present unless exposed to rh+ blood

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15
Q

Plasma makes up what percentage of blood?

A

55%

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16
Q

What makes up a majority of plasma

A

Water (92%)
Proteins (7%)

17
Q

What proteins are found in plasma?

A

Albumin
Globulins
Fibrinogen

18
Q

Albumin

A

Regulates water volume
Regulates blood volume and blood pressure

19
Q

Globulin

A

Antibodies for immunity
Transport fats or fat soluble materials

20
Q

Fibrinogen

A

Forms fibrin
- turns into fibrin during coagulation

21
Q

What are the steps of hemostasis?

A
  1. Vascular Spasms occur
  2. Formation of platelet plug
  3. Coagulation occurs
22
Q

Vascular Spams

A

Smooth muscle in blood vessel contracts
Makes blood vessel smaller in size to prevent blood loss

23
Q

Formation of platelet plug

A

Platelets get trapped in collagen
The platelets release chemicals to bring more platelets to the area
Platelet chemicals cause them to stick together

24
Q

Coagulation occurs

A

Fibrinogen turns into fibrin
Fibrin creates a mesh to trap Red Blood Cells and platelets
Causes a clot

2240 Cardiovascular system (4 decks)

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