The human muscular system consists of over 650 muscles that are attached to the skeleton and allow for body movement. There are three main types of muscle tissue - skeletal, cardiac, and smooth muscle. Skeletal muscle powers movement of the bones, cardiac muscle is only found in the heart, and smooth muscle supports blood vessels and organs. Within these tissues are voluntary muscles that can be controlled and involuntary muscles that cannot, like the heart. Common muscle diseases include myopathies which cause skeletal muscle weakness, muscular dystrophy which is a genetic disorder causing muscle wasting over time, and rhabdomyolysis in which muscle fibers break down releasing toxic contents into the bloodstream.

1. By: Alex and Mark

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3. What is the Muscular System?
The human body has more then 650 different muscles which
are attached to the skeleton The main job of the muscular
system is to provide movement for the body. The muscular
system consists of three different types of muscle tissues
skeletal, cardiac, and smooth. Each of these different
tissues has the ability to contract, which then allows body
movements and functions. There are two types of muscles
in the system and they are the involuntary muscles, and the
voluntary muscles. The muscle we can control by ourselves
are called the voluntary muscles and the ones we can’t
control are the involuntary muscles like the heart for
example.

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5. The 3 different muscle tissues
 Skeletal muscle tissue: which represents the majority of the
muscular tissue in the body. Skeletal muscle is the type of muscle
which powers movement of the skeleton as in walking and lifting.
 Cardiac muscle: A type of muscle with unique features only found in
the heart. The cardiac muscle is the muscle of the heart.
 Smooth muscle: Generally forms the supporting tissue of blood
vessels and hollow internal organs such as the stomach, intestine, and
bladder. So named because of the absence of microscopic lines called
"cross-striations" which are seen in the other two types.

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7. Pictures & Random facts
 There are muscles in your hair that
you goose bumps.
 It takes 17 muscles to smile and 42
muscles to frown.
 The hardest working muscle is in the
eye.
 The largest muscle in your body is
the Gluteus Maximus.
 The longest muscle in your body is
the Sartorious
 The smallest muscle in your body is
located in the ear, and called the
Stapedius.

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9. Different Muscle Disseases

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11. Myopathy
 Myopathies are diseases of
skeletal muscle which are not
caused by nerve disorders.
These diseases cause the
skeletal or voluntary muscles
to become weak or wasted.
Myopathies are usually
degenerative, but they are
sometimes caused by drug
side effects, chemical
poisoning, or a chronic
disorder of the immune
system.

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13. Muscular Dystrophy
 Muscular dystrophy (MD) is a broad term that
describes a genetic (inherited) disorder of the
muscles. Muscular dystrophy causes the muscles in
the body to become very weak. The muscles break
down and are replaced with fatty deposits over time.
Muscular dystrophy is a genetic disorder that is
characterized by muscle wasting and weakening.

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15. Rhabdomyolysis
 Rhabdomyolysis is the breakdown of muscle fibers
resulting in the release of muscle fiber contents into
the circulation. Some of these are toxic to the kidney
and frequenty result in kidney damage. Many clinical
features of rhabdomyolysis are nonspecific, and the
course of the syndrome varies depending on the
underlying condition.

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17. Credits
 http://www.medterms.com
 http://images.google.ca/imghp?hl=en&tab=wi (Google
Images)
  And then rest to me and mark 