MUSCULAR SYSTEM

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Muscular System Outline:

ComponentsMuscles: Muscles are special type of tissues of human body that posess the ability of contraction and relaxation. They can contract actively thus producing force for different body movements.
Types of Muscle
Skeletal MuscleStriated, under voluntary control, found attached to skeleton, produce major movements of body parts
Smooth MuscleNon striated, not under voluntary control, found in soft organs of body, responsible for processes like digestion of food etc.
Cardiac MuscleStriated, involuntary, present exclusively in heart, responsible for pumping activit of heart, very strong and tough
FunctionsMovements of body parts, Stability and Posture, Heat production, Circulation, Help in Digestion

Introduction to Muscular System:

Muscular System
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Muscular system is the system of Human Body that provides motor power for all movements of body parts. Muscular system is composed of special tissue called muscular tissue. Muscles have the ability to contract actvely to provide the force for movements of body parts. Muscular system is an important system of human body because without it, life will completely stop. Muscles produce not only those movements that are under the control of our will and that we can see and feel, but also those movements that are responsible for activities like breathing, digestion of food, pumping of blood etc.

Muscles:

Muscles are body tissues that provide the force for all body movements. They are made of special types of cells. For details of structure and types of muscles, please see the basic anatomy article “”. For details of microscopic structure of muscles, pleas see the histology article “”.

Types of muscles:


Functions of the Muscular System:

Muscular system has the following important functions in human body;
  1. MOVEMENTS OF BODY PARTS: Skeletal muscles are responsible for all voluntary movements of human body parts. They provide the force by contracting actively at the expense of energy. In other words, muscles are motors of body where chemical energy of food is converted into mechanical work.
  2. STABILITY AND POSTURE: Skeletal muscles stabilize human skeleton and give a proper posture to human beings. Some joints of human body are weak and they require the support of muscular system to achieve stability. Skeletal muscles are very important for such joints.
  3. HEAT PRODUCTION: A large share of body’s energy is used by muscular system. As a result of high metabolic rate, muscles produce great amount of heat in the body. Heat produced by muscles is very important in cold climates.
  4. CIRCULATION: Cardiac muscles provide the main force for circulation of blood throughout human body. The regular pumping of heat keeps the blood in motion and nutrients are readily available to every tissue of human body.
  5. HELP IN DIGESTION: Smooth muscles of organs like stomach and intestine help the digestive system in the process of digestion of food.

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