11 results for “red blood cell”
The Human Body
The Heart and Blood
red blood cells pass through in single file, with walls one cell thick. It is here
Article · 4 min read
Life & Biology
What Is Life? The Cell
cells that carry signals, red blood cells that ferry oxygen, skin cells that form a barrier
Article · 4 min read
The Human Body
The Skeleton and Bones
cells a day: red blood cells to carry oxygen, white blood cells to fight infection, platelets
Article · 5 min read
The Human Body
Lungs and Breathing
red blood cells, but above about 8,000 metres it cannot keep up, which is why most
Article · 4 min read
The Human Body
The Brain
cells. A neuron has a body, a tree of branching fibres called dendrites that receive signals, and a single long cable, the axon, that carries its own signal onward, sometimes
Article · 4 min read
Chemistry
Acids and Bases
red cabbage juice works: it turns pink in vinegar and green in soapy water. Neutralisation When an acid meets a base, they cancel each other out. The hydrogen ions from the acid
Article · 3 min read
The Human Body
The Immune System
blood vessels leak, flooding the area with fluid and white cells, which is why a wound goes red
Article · 4 min read
Animals
The Octopus
blood is blue, because it carries oxygen with a copper-based molecule rather than the iron-based one that makes ours red. It breathes water through gills inside its body
Article · 3 min read
Space & the Universe
The Life of a Star
red giant. When the Sun does this, in about five billion years, it will swell past the orbit of Mercury and Venus and roast the Earth. Inside the giant, the core becomes
Article · 3 min read
The Human Body
Muscles
cells called fibres, some running the full length of the muscle. Inside each fibre are thousands of parallel threads, and inside each thread, repeated end to end, is the working unit
Article · 4 min read
The Human Body
The Senses
red, green and blue. Every colour you see is a mixture of three signals, which is why screens need only three colours of pixel. The retina does some processing itself, detecting edges
Article · 4 min read
