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Muscles are effector organs that respond to nervous stimulation by contracting and so
bring about movement.
There are three types of muscle in the body:
Skeletal muscle Always attached to bone
Acts under voluntary control via motor neurones of somatic nervous system
Cardiac muscle Found exclusively in the heart
Not…

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The thick filament is made of a protein called myosin. Many of these molecules stick
together to form the thick filament, with the "handles" lying together to form the
backbone and the "heads" sticking out in all directions to form the cross-bridges.
The thin filament is made of a protein…

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Skeletal muscles are made up of two types of fibres ­ slow twitch and fast twitch.
Slow-twitch fibres Fast-twitch fibres
Contract slowly Contract very quickly
Provide less powerful contractions Provide powerful contractions
Adapted for endurance work Adapted for intense work
Needed to maintain body's upright position
Needed for fast movement…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
Muscles are effector organs that respond to nervous stimulation by contracting and so
bring about movement.
There are three types of muscle in the body:
Skeletal muscle Always attached to bone
Acts under voluntary control via motor neurones of somatic nervous system
Cardiac muscle Found exclusively in the heart
Not…

Page 3

Preview of page 3
The thick filament is made of a protein called myosin. Many of these molecules stick
together to form the thick filament, with the "handles" lying together to form the
backbone and the "heads" sticking out in all directions to form the cross-bridges.
The thin filament is made of a protein…

Page 4

Preview of page 4

Page 5

Preview of page 5
Skeletal muscles are made up of two types of fibres ­ slow twitch and fast twitch.
Slow-twitch fibres Fast-twitch fibres
Contract slowly Contract very quickly
Provide less powerful contractions Provide powerful contractions
Adapted for endurance work Adapted for intense work
Needed to maintain body's upright position
Needed for fast movement…

Page 6

Preview of page 6

Comments

No comments have yet been made