Monday 29 October 2012

Muscular System


What is Muscular System?

The muscular system is a system of tissues - called muscles - throughout the body which allow you to move. Most of the muscles in the body are under conscious control and are moved by commands sent to the muscles from the brain via the nervous system. However, some muscles (such as the cardiac muscles) are involuntary - that is, they move regularly without any conscious control. Muscles are made up of millions of tiny protein filaments which work together to produce motion in the body. They move and make us capable of a variety of actions by simply contracting and becoming shorter or by relaxing and becoming longer.

The muscular system consist of three different types of muscle tissues : skeletal, cardiac, smooth.


Functions of Muscular System

1.Skeletal Muscles Create Movement
2.Skeletal Muscles Protect Organs
3.Cardiac Muscle Pumps Blood
4.Smooth Muscle Aids Digestion
5.Smooth Muscle Ensures Blood Flow

6. Maintenance of posture also due to skeletal muscles
7.Respiration due to movements of the muscles of the thorax
8.Production of body heat, which is necessary for the maintenance of body temperature, as a byproduct of muscle contraction
9.Communication, such as speaking and writing, which involve skeletal muscles
10.Constriction of organs and vessels, especially smoother muscles that can move solids and liquids in the digestive tract and other secretions, including urine, from organs
11.Heart beat caused by the contraction of cardiac muscle that propels blood to all parts of the body


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