Personal devices for protection of heads from impact, penetration from falling and flying objects, and from limited electric shock and burn.
Helmets,Device, Head Protective,Devices, Head Protective,Head Protective Device,Helmet,Protective Device, Head,Protective Devices, Head
D006801
Humans
Members of the species Homo sapiens.
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001642
Bicycling
The use of a bicycle for transportation or recreation. It does not include the use of a bicycle in studying the body's response to physical exertion (BICYCLE ERGOMETRY TEST see EXERCISE TEST).
D014481
United States
A country in NORTH AMERICA between CANADA and MEXICO.