Once Upon a Time... Life

Season 1, Episode 4: The Bone Marrow

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Red blood cells, the body’s police force, are created in the bone marrow but sometimes, the factory breaks down and wayward policemen come out. Uh oh!

All Episodes - Season 1

The Planet Cell
Episode 1
The Planet Cell
 Birth
Episode 2
Birth
 The Body Sentinels
Episode 3
The Body Sentinels
 The Bone Marrow
Episode 4
The Bone Marrow
 The Blood
Episode 5
The Blood
 The Tiny Platelets
Episode 6
The Tiny Platelets
 The Heart
Episode 7
The Heart
 Breathing
Episode 8
Breathing
 The Brain
Episode 9
The Brain
 The Neurones
Episode 10
The Neurones
 The Eye
Episode 11
The Eye
 The Ear
Episode 12
The Ear
 The Skin
Episode 13
The Skin
 The Mouth and the Teeth
Episode 14
The Mouth and the Teeth
 The Digestion
Episode 15
The Digestion
 The Liver Factory
Episode 16
The Liver Factory
 The Kidneys
Episode 17
The Kidneys
 The Lymphatic System
Episode 18
The Lymphatic System
 The Bones and the Skeleton
Episode 19
The Bones and the Skeleton
 The Muscles and the Fat
Episode 20
The Muscles and the Fat
 Toxin Wars
Episode 21
Toxin Wars
 The Vaccination
Episode 22
The Vaccination
 The Hormones
Episode 23
The Hormones
 The Chain Of Life
Episode 24
The Chain Of Life
 Repairs and Changes
Episode 25
Repairs and Changes
 And life goes on...
Episode 26
And life goes on...
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