Human Muscular System
There are some five hundred separate muscles in the human body and they make up about half its weight.
The muscular system comprises of all the muscles of the human body. Muscle is a contractile tissue grouped into coordinated systems for greater efficiency. In humans, the muscle systems are classified by gross appearance and location of cells. The three types of muscles are skeletal, cardiac and smooth.
Although cardiac muscle is a specialized striated muscle consisting of elongated cells with many centrally located nuclei, it is not under voluntary control. Smooth muscle lines the viscera, blood vessels and dermis, and, like cardiac muscle, its movements are operated by the autonomic nervous system and thus are not under voluntary control. The nucleus of each short, tapering cell is located centrally.
Human Muscular System Front view and Back view
Cardiac muscle is also an involuntary muscle
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lapasan | Nov 5, 2010 | Reply
good post.
albert1jemi | Nov 5, 2010 | Reply
great share
Kristie Claar | Oct 15, 2011 | Reply
good article