In most myopathies, weakness occurs primarily in the muscles of the shoulders, upper arms, thighs, and pelvis (proximal muscles). In some cases, the distal muscles of the hands and feet may be involved during the advanced stage of disease. Other typical symptoms of muscle disease include the following: 1  Aching. 2  Cramping.lthough symptoms depend on the type of myopath y, some generalizations can be made. Skeletal muscle weakness is the hallmark of most myopathies, with some noticeable exceptions, such as myotonia and paramyotonia congenita.
Quick Answer. There are approximately 470 known species of shark in the world, but it's impossible to count the exact number of individual sharks on the planet. World Wildlife Fund estimates that more than 100 million sharks are killed each year for their fins. Continue Reading.
Oceans. Sharks have been around for over hundreds of millions of years. While many of us may be familiar with a few shark species, there are over 400 of them, from the 8-inch-long dwarf lanternshark to the 40-foot-long whale shark. Sharks are efficient predators with a highly developed sense of smell, hearing and sight. They can detect their preyâs scent from a great distance.