4. The muscular system functions
Support and
posture
Without the muscles, there
would be no tension
throughout the body to
keep it upright.
5. The muscular system functions
Movement
The voluntary muscles of
our body (like the biceps
and hamstrings) act on the
bones they are attached to
to produce movement
6. The muscular system functions
Involuntary bodily
functions
Breathing
Digestion
Heart Beat
The above
functions are
performed (or
assisted by
muscles) without
thinking about
them.
7. Muscles - structure
All of our muscles are made
up of microscopic
fibres, which when bundled
together are called motor
units.
These motor units (when
called upon by a nerve
impulse create movement.
The number of motor units
used depends on the
strength of the impulse and
the effort (force) required
8. Which muscles should I
know?
Anterior
Posterior
Pectorals
Trapizius
Biceps
Triceps
Abdominals
Latissimus Dorsi
External Obliques
Gluteus Maximus
Quadriceps
Tibialis anterior
Hamstrings
Gastrocnemius
9. Key Concepts Review
The muscular system acts on the bones to allow us to
move, breath, eat and more.
There are at least 700 muscles in the human body which
perform a wide variety of voluntary and involuntary
functions
The muscles are made up of bundles of muscle fibres, which
the body uses to different degrees based on the demands of
a task.
