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Physl > Blood 1 > Flashcards

Blood 1 Flashcards

1
Q

What are the 3 main functions of the blood?

A

Transport, Defense, Homeostasis

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2
Q

How much of the body is blood?

A

7 or 8% of body weight it blood

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3
Q

What affects the flow of blood?

A

The viscosity of blood

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4
Q

What is the Hematocrit?

A

The percentage of the total blood volume that is occupied by red blood cells that have been packed down due to gravity or the centrifugal force

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5
Q

What are the different Hematocrit values in men and women?

A

45 +/-5 in women

47 +/-5 in men

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6
Q

What is the Buffy Coat?

A

The thin layer above RBCs after centrifuging blood

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7
Q

What does the Buffy Coat contain?

A

White blood cells and platelets

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8
Q

What is Plasma?

A

The fluid portion of the blood

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9
Q

What is the Plasma of the blood apart of?

A

The body’s extracellular fluid

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10
Q

Where is Intracellular fluid found?

A

Inside the cells

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11
Q

Aside from Plasma, what is the other part of the body’s extracellular fluid?

A

Interstitial fluid

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12
Q

Where is Interstitial fluid found?

A

Outside the blood vessels, outside cells

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13
Q

What is the main component of plasma?

A

Mainly water (>90%)

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14
Q

What electrolytes does plasma contain?

A

Na+ and Cl-

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15
Q

What are some things that the Plasma transports?

A

Nutrients, waste products, hormones, CO2

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16
Q

What do Plasma proteins have a role in?

A
  • Distribution of body water
  • Buffering
  • Transport
  • Defence
  • Homeostasis
17
Q

How is most of the oxygen in the blood transported?

A

By red blood cells with 2% being transported by plasma

18
Q

What are three main groups of Plasma proteins?

A

Globulins, Albumin and Fibrinogen

19
Q

What does Fibrinogen have a crucial role in?

A

Preventing blood loss

20
Q

What protein class do antibodies belong to?

A

Immunoglobulins

21
Q

What can water move between?

A

It can move in and out of blood vessels, inside tissues, and from blood vessels to tissues and vice versa

22
Q

What is the movement of water across the wall of a blood vessel dependant on?

A

The Osmotic gradient across that blood vessel wall and plasma proteins

23
Q

How do less plasma proteins affect water movement?

A

If the concentration of plasma proteins go down, less water will move into the blood vessel

24
Q

What can act as buffers?

A

Plasma proteins

25
Q

How can plasma proteins affect hormones?

A

Proteins in the plasma can bind to molecules such as hormones and carry them through the blood

Physl (94 decks)

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