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Biology > Blood (chpt. 25) > Flashcards

Blood (chpt. 25) Flashcards

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1
Q

What is plasma

A

Liquid part of blood

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2
Q

Function of plasma

A

Transport

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3
Q

What makes up plasma

A

Clotting proteins and antibodies

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4
Q

What is serum and use

A

Plasma from which the clotting proteins have been removed

Used in research

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5
Q

Structure of red blood cells

A

Small biconcave discs, no nucleus or mitochondria

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6
Q

Source of red blood cells

A

Red bone marrow of large bones

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7
Q

What do red blood cells contain

A

The protein haemoglobin (carries oxygen)

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8
Q

What does haemoglobin do

A

Carry oxygen

Found in red blood cells

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9
Q

Function of red blood cells

A

Transport oxygen - haemoglobin

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10
Q

Another name for red blood cells

A

Erythrocytes

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11
Q

How long do red blood cells live

A

About 4 months - damaged from changing shape to pass through narrow blood vessels

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12
Q

Where are red blood cells broken down

A

Liver & spleen

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13
Q

Structure of white blood cells

A

Nucleus & mitochondria

No definite shape

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14
Q

Source of white blood cells

A

Red bone marrow

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15
Q

Function of white blood cells

A

Produce antibodies , engulf & kill bacteria

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16
Q

Types of white blood cells

A

Lymphocytes

Monocytes / phagocytes

17
Q

Structure of platelets

A

No nucleus , tiny fragments of larger cells

18
Q

Source of platelets

A

Red bone marrow

19
Q

Function of platelets

A

Blood clotting to prevent blood loss and entry of microorganisms

20
Q

Functions of the blood

A
  1. Transport - oxygen by RBC - food, waste products, hormones by plasma - heat from internal organs by plasma
  2. Defence - monocytes & lymphocytes in WBC - clotting by platelets
  3. Regulation - maintains body temperature - keeps water and salt in cells at correct level
21
Q

Main blood groups

A

A
B
AB
O

22
Q

What is the rhesus factor

A

Determines if blood is + or -

23
Q

Main components of blood

A

Plasma + RBC + WBC + platelets

24
Q

In which type of blood vessel is the movement of blood aided by the contraction of muscles

A

Veins

25
Q

What gives blood it’s red colour?

A

Haemoglobin

26
Q

What causes anaemia?
What are the symptoms?

A

Lack of iron in the diet
Fatigue & paleness

Biology (34 decks)

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