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GCSE PE The Muscular System
Transcript of GCSE PE The Muscular System
They can either be voluntary or involuntary. Voluntary muscles are the main muscles used for movement and maintaining posture. They are used when exercising and playing sport. An example of an involuntary muscle is your heart as it contracts without conscious control (contracts by itself!). Pectorals Skeletal Quadriceps Hamstring Trapezius Gastrocnemius Gluteus Maximus Bicep Triceps Deltoid Latissimus Dorsi Abdominals Smooth Cardiac Used during exercise.
Striped under a microscope.
Voluntary muscles (used under conscious control)
They are attached to our bones by tendons.
There are over 600 of them in the body. Luckily you only need to know 11 of them. This is the muscle that forms your heart.
It works without conscious control.
It is the Scott Parker of muscles, a tireless worker.
Each contraction of this muscle is a heartbeat. These work without conscious control.
They are called smooth as they have no stripes when viewed under a microscope.
Examples of smooth muscles can be found in the digestive system where they are used to aid digestion and in the blood vessels where they aid blood flow. How do muscles move? Sporting Movement Can you complete the table using sporting examples of the following movements? Flexion Extension Abduction Muscles and Movement Now use the text books from pg.140 -142 to complete the table on pg. 9 of your work booklet. Homework Complete unit 30 using the worksheets provided! How does the body respond to exercise?