Download Human Body System Prezi project

Human Body Systems
Muscular System
Body Organization
Include a short definition of:
• Cell, tissue, organ, organ system
• Indicate the order of organization beginning with
the smallest level
cell
tissue
organ
organ system
Muscle System
• List 5 functions of the muscular system
• List and describe 2 categories of muscle tissue
• List and describe 3 types of muscle tissue and
indicate where they are found.
• Explain why skeletal muscle is sometimes called
striated muscle.
• Explain why skeletal muscles must work in pairs.
• Explain how muscle attaches to bone
• Explain how to maintain the strength and
flexibility of your muscles.
Muscle Function
• Muscles are mainly used to provide
movement either by moving individual body
parts or the body as a whole
• Muscles give stability to joints so that they can
hold up when bearing a load. They also help
maintain posture.
• Smooth muscles push food through the
bowels and regulate the bladder. Cardiac
muscle causes the heart to beat.
Muscle Function
• Assist in the circulation of blood in the body;
help to push up the back of the legs.
• Working muscles generate heat.
• ***In extreme cases - when the body is
deprived of fat or food, the muscle
degenerates into ATP then into glucose
(energy)
2 Categories of Muscles
• Voluntary, (vol-un-tary) muscles are the ones
that you can control. Most of them move your
bones around. (under your control)
• involuntary muscle contraction is used to
move the body, and can be finely controlled
by the nervous system
– Includes smooth muscle tissue and heart muscle
3 Muscle Types
•
Skeletal muscle - voluntary – striated
– the muscle attached to the
skeleton. The contraction of
skeletal muscle is under voluntary
control.
• Smooth muscle – involuntary – non
striated
– Found within the blood vessels
and lining other organs
– Causes your organs to do their job
• Cardiac muscle – involuntary –
striated
– adapted to be highly resistant to
fatigue
– found only in the heart
– Causes regular beat of the heart
Striated??
• Both skeletal and cardiac
muscle types are striated or
appear to be banded.
• Skeletal muscle is often
referred to as striated
muscle tissue
• The appearance of bands or
striations in the muscle
tissue is created by the
structure of the muscle
tissue.
Muscle Work in Pairs
• Muscles which move bones act
together in pairs. This means
that as one muscle contracts, its
partner relaxes. Then as the
partner muscle contracts the
first muscle relaxes again.
• The messages sent by the brain
are 'contract' or 'relax'. The
brain sends the messages to
one muscle partner and to the
other at the same time.
Click on picture to see
how this works
Tendons
• A tendon is made of connective tissue and
connects muscle to bone
A VERY Famous Tendon
Don’t want this to happen!
Keep Your Muscles Healthy
• Regular exercise is important for
maintaining both muscular strength and
flexibility.
• Exercise makes individual muscle cells grow
in size. The thicker the muscle, the stronger
the muscle
• A nutritious diet, including plenty of water is
important for the healthy function of the
muscular system and all other body
systems