20 results for “bone”
The Human Body
The Skeleton and Bones
bones that carry sound from the eardrum inward. What bone is made of Bone is a composite
Article · 5 min read
Animals
Mammals
bones in the middle ear that evolved from reptile jaw bones, a diaphragm for breathing, and a large
Article · 4 min read
The Human Body
Muscles
bones through tough cords called tendons, and when it shortens, it moves the bone. There are more
Article · 4 min read
Animals
Birds
bones are hollow, braced inside with struts like an aircraft wing; a frigatebird's skeleton weighs
Article · 3 min read
Life & Biology
Dinosaurs and Mass Extinctions
bone, hunted the plains of North America at the very end of the dinosaur age. Triceratops
Article · 3 min read
Animals
Whales and Dolphins
bones as in a human arm and hand, and many whales still have tiny useless hip bones
Article · 4 min read
Animals
Sharks
bones. Their skeleton is cartilage, the same flexible material that forms your nose and ears, which
Article · 3 min read
Life & Biology
Evolution
bones in the same order, stretched or shrunk to different jobs, because they were inherited from
Article · 4 min read
The Human Body
The Heart and Blood
bone marrow. White cells, far fewer, are the immune system's soldiers, patrolling for bacteria, viruses
Article · 4 min read
Space & the Universe
Space Exploration
bone and muscle unless they exercise for hours each day. China now operates its own station
Article · 3 min read
Matter, Energy & Physics
The Periodic Table
bones and the iron in your blood are star material. The elements beyond uranium, number 92, do not survive
Article · 4 min read
Animals
Insects
bones inside, it wears its skeleton outside, a hard shell of a material called chitin. The exoskeleton
Article · 3 min read
The Human Body
Skin, Hair and Nails
bones. Sensing and cooling Skin is full of sensors. Different nerve endings detect light touch, pressure
Article · 3 min read
Planet Earth
Rocks, Minerals and Fossils
bones, shells and teeth can be mineralised, their pores filled with dissolved stone until the original
Article · 4 min read
Matter, Energy & Physics
Light
bone; then gamma rays, the most energetic of all. All of them are light. Our eyes
Article · 4 min read
Space & the Universe
The Life of a Star
bones and the iron in your blood, was built inside stars and scattered by their deaths
Article · 3 min read
Life & Biology
DNA and Genes
bones 100,000 years old. Since 2012 a tool called CRISPR, borrowed from the immune systems
Article · 4 min read
Animals
Reptiles and Amphibians
bone fused to the ribs and spine, a design unchanged for 200 million years; they are among
Article · 3 min read
The Human Body
The Senses
bones, the smallest in the body, lever those vibrations into the fluid-filled cochlea, a spiral
Article · 4 min read
Chemistry
The Chemistry of Life
bones together; and the proteins actin and myosin make your muscles move. Nucleic acids: the instructions
Article · 3 min read
