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Biology 2023 > Blood > Flashcards

Blood Flashcards

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1
Q

Role of:
Red blood cells?

A

To carry oxygen around the body

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2
Q

Features of:
Red blood cell?

A

Biconcave: increases surface area
Internal: contains haemoglobin
No nucleus

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3
Q

Role of:
White blood cells

A

To protect from disease

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4
Q

Features of:
White blood cells?

A

Phagocytes: can change shape to engulf microbes
Lymphocytes: cam produce antibodies to neutralise microbes

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5
Q

Role of:
Platelets?

A

To help our blood to clot

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6
Q

Features of:
Platelets?

A

Are cell fragments so have no nucleus
Are very small (2-3 ųm)

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7
Q

What is the percentage of plasma in blood?

A

46-63%

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8
Q

What is the percentage of white blood cells and platelets in blood?

A

Less than 1%

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9
Q

What is the percentage of red blood cells in blood?

A

45%

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10
Q

Functions of:
Blood

A

Transport gasses, nutrients, hormones, antibodies and heat around the body
Defence against disease

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11
Q

Plasma contains dissolved substances

A
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Biology 2023 (6 decks)

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