The heart is made of a unique muscle type known as cardiac and it never tires. But the body also has many other paired muscles, some voluntary that are attached to the skeleton and help the body move, some involuntary that work the internal organs and cannot be controlled.hey are attached to the skeleton and can be controlled. Voluntary muscles have fast twitch and slow twitch fibres. Fast twitch fibres contract quickly, but do not use oxygen well and tire quickly. Slow twitch fibres contract slowly, but use oxygen well and keep going for a long time.
While all boats in the United States must meet minimum standards established by the. U. S. Coast Guard (USCG), the NMMA ensures manufacturers participating in its voluntary certification program adhere to standards set by the American Boat and Yacht Council (ABYC), as well as those of the USCG.
Yes, it is part of the military (along with the Army, Navy, Air Force and, Marines) and all members of the Coast Guard are subject to the Uniform Code of Military Justice.I â¦ t is one of seven (yes there are seven) uniformed services.uring peacetime, the U.S. Coast Guard remains at a state of  readiness with direction from the U.S. Department of Homeland  Security. Control can also be given to the U.S. â¦ Department of the  Navy with orders from the President at any time.