Musculo-Skeletal System. Role of the Musculo-skeletal System To provide support & protection for our organs Allows movement.
Post on 27-Dec-2015
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Role of the Musculo-skeletal System
• To provide support & protection for our organs
• Allows movement
Functions of Each Section
• All bones provide the function of support.
Additionally:
• Head: protection for our brain• Spinal Column: rotation, flexibility• Thorax: protects lungs and heart• Upper & Lower Limbs: bones act as levers for
lifting and walking; bone marrow stores important minerals; bone marrow produces red blood cells
Joints
• Roles of joints:– Links bones
together (ligaments)– Helps with mobility
(moving) (tendons)
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Antagonistic Muscles
• Antagonistic muscles are muscles that act in opposite ways.
• i.e. Biceps and triceps
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Types of Muscles
• There are three main types of muscles: Skeletal, cardiac, smooth
• Different by structure, function and endurance.
• Where each type is found in the body depends on what it is used for
• Skeletal muscle- Striated- we have voluntary control- good for short term, strength- in our arms, legs, back, abs, etc
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• Cardiac (heart) muscle- striated (the arrow points to it)- is involuntary- for long term endurance and strength- found in our heart
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• Smooth Muscle- unstriated- for involuntary muscle contractions (like in our digestive tract)
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