Download Muscles

Quiz
1.
2.
3.
4.
5.
6.
7.
This system pulls on bones
and makes them move.
Neck area of the vertebral
column.
There are how many bones
in the body?
There are 3 types of joint,
fixed, slightly movable, and…
This holds bones together
and keeps them in place.
Is a function of the skeleton.
Which bone in the arm joins
to the thumb?
• Use the words below to
find the answers to the
questions.
•
•
•
•
•
•
•
•
•
•
Skeletal system
Shape and support
Synovial
Radius
206
Ligament
Cervical
Nervous system
Pivot
302
Muscles
By the end of this lesson, you will be able to:
• Identify the muscles in the skeleton.
• Understand how muscles make us move.
Muscles
There are over 300 muscles in our body.
Our muscles help us:
• Digest food
• Blink and smile
• Breath
• Involved in everything we do.
Muscular system
There are 3 different types of
muscle in our body
1. Cardiac
2. Involuntary
-
- Found around our organs
such as the intestine.
- Work without conscious
effort.
Found in the heart.
Work without conscious
effort.
3. Voluntary
- Attached to bones.
- Under our control.
Voluntary Muscle
Activity
Make notes on Voluntary muscle
Include –
• What is it?
• What is it made up of?
Voluntary Muscles
Voluntary muscle is
- attached to bones
- works when you want it to
- often called skeletal or striped
muscle
Voluntary muscle is made up of
- Fast and slow twitch fibres
- Use more slow twitch fibres
with activities suited to
endurance, eg. Jogging, long
distance running.
- Use more fast twitch fibres
with activities related to
strength and power, e.g. sprinting
and weight lifting.
Muscles and movement
• Every muscle has a job to do.
• There job is to move certain bones.
Fact: Muscles work in pairs.
Take the arm for example
• One muscle contracts (shortens) while the
other relaxes (lengthens) and vice versa.
Have a go!
What muscle is contracting?
What muscle is relaxing?
Bend knee - ________ contracts (shortens)
________ relaxes (lengthens)
Straighten knee - _______ contracts
_______ relaxes
Questions to complete
•
•
•
•
•
To jump, we bend our knees and straighten
them.
What main pair of muscles help move the
knee?
What does this working in pairs called?
Give an example from one of your chosen
sports of an antagonist muscle action.
A voluntary muscle is attached to bones with
what?
Explain how having poor muscle tone can
cause bad posture.