L3 - Blood Flashcards

1
Q

what are the 3 types of specialized cellular elements

A

erythrocytes
leukocytes
platelets

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2
Q

what is the function of water in plasma

A

it acts as a transport medium and carries and distributes heat

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3
Q

what are electrolytes

A

ions dissolved in blood

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4
Q

what is blood pH

A

7.4

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5
Q

why is venous blood slightly more acidic than arterial blood

A

CO2 and the dissociation of H+ ions

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6
Q

where are plasma proteins synthesized

A

in the liver

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7
Q

what is the most abundant plasma protein

A

albumin

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8
Q

what does albumin do

A

it contributes to the colloid osmotic pressure

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9
Q

what is angiotensin involved in

A

salt/water balance and blood concentration

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10
Q

what is the life cycle of an erythrocyte

A

120 days

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11
Q

where is erythropoietin produced

A

the kidney

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12
Q

what does erythropoietin do

A

stimulated red blood cell production

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13
Q

what is hemolysis

A

the breakdown of red blood cells

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14
Q

what is an example of positive feedback

A

blood clotting

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15
Q

what are platelets

A

cell fragments

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16
Q

nutritional anaemia - causes

A

iron deficiency

17
Q

pernicious anaemia - causes

A

inability to absorb B12 from GIT due to deficiency of an intrinsic factor

18
Q

aplastic anaemia

A

failure of the bone marrow to produce enough rbcs

19
Q

renal anaemia

A

reduced rbc production due to impaired EPO production due to kidney disease

20
Q

haemorrhagic anaemia

A

caused by losing a lot of blood

21
Q

haemolytic anaemia

A

caused by a rupture of rbcs

from malaria / sickle cell disease

22
Q

what is thromboembolism

A

abnormal blood clotting