Download The Muscular System

The Muscular System
Goal: To describe the structure and function of
the muscular system.
What is the
Muscular System?
• made up of over 600
different muscles
• consists of two
different types of
tissue:
• connective tissue
• muscle tissue
What are the
Functions of the
Muscular System?
1. To create movement by
working with bones,
ligaments, and tendons.
2. To move food through the
digestive system.
3. To move blood through the
body by pumping the heart.
4. To produce heat.
5. To provide protection to
inner organs.
What are the 2 Different Types of
Muscle?
• Voluntary:
• Involuntary
• Muscle action that is
under your control.
• Most skeletal movement
is voluntary.
• Muscle action that is
NOT under your control.
• Cardiac and smooth
muscle are involuntary.
• Examples:
• Walking, talking,
running, writing,
jumping, stretching
• Examples:
• Heart beating, food
moving through the
digestive tract, reflexes
(skeletal)
Skeletal muscle can be both voluntary and involuntary (reflexes).
What are the
Types of Muscle?
1. Skeletal Muscle:
• Attached to the bones for movement.
Helps protect your inner organs.
2. Cardiac Muscle:
• Special type of muscle found only in
your heart. This type of muscle
causes your heart to beat.
3. Smooth Muscle:
• Lines your digestive tract and blood
vessels. Smooth muscle moves food
and blood through your body.
What are
Tendons?
• Tendons attach muscles to
bones.
• Tendons are made up of
strands of flexible connective
tissue.
• When a muscle contracts
(gets shorter) the tendon pulls
on the bone.
How do
Muscles
Work in
Pairs?
• Muscles work in pairs to cause smooth,
controlled movements.
• Many of our basic movements are the
result of pairs of muscles bending and
straightening.
• Flexor - a muscle that contracts to bend a
part of the body.
• Extensor – a muscle that contracts to
straighten a part of the body.
Flexors and extensor
always work
opposite of one
another.
As you watch the video please respond to the following
questions…
1.
2.
3.
4.
What are the two basics types of muscle?
What are examples of voluntary muscle use?
What is a tendon?
What happens when muscles work in pairs?
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