Transcript Muscular and Skeletal Systems

Fun Facts!
There are about 206 bones in a grownup’s body. But more than half of them are
located just in our hands and feet!
Humans and giraffes have the same
number of bones in their necks = 8
Giraffe neck vertebrae are just much,
much longer!
Humans and elephants are the only animals to
show fear when they stumble upon a skeleton of
their own kind!
People in Madagascar have a ritual called the
“turning of the bones” during which the dead
are dug up and entertained and reburied with a
new set of gifts!!
The strongest bone in your body is your femur
(your thigh bone).
Antlers and horns are not the same thing
Antlers are made entirely of bone, while horns are
not.
Elephant tusks are bones.
During medieval times, doctors in Europe
and the Middle East thought mummies
had medicinal value. The ground up
thousands of Egyptian mummies and put
them in expensive medicines for their
patients!!
1. How is skeleton like the frame in a
building?
2. Baby = 275, Adult = 206
3. Bones fuse together as you get older
3. Skeletal System
1.
Provides shape and support for the
body.
2.
Enables you to move
3.
Protects your internal organs
4.
Produces blood cells
5.
Stores minerals in bone and
marrow.
fat in
4. The backbone (vertebrae) is the
center of the skeleton.
26 Bones
5. Bone protect important organs.
Skull protects brain
Ribs protect your heart and lungs
6. A joint is a place in the body
where two bones come
together.
7. Joints allow bones to move in
different ways.
8. 2 types of Joints:
Moveable = Hip, hand, knee,
shoulder, neck
Immovable = Skull
9. Bones in movable joints are
held together by strong
connective tissue called
LIGAMENTS.
10. Another type of connective tissue
is CARTILAGE which is more
flexible than bone. It covers the
ends of BONES and keeps them
from rubbing together.
11.Compact bone is hard and dense, but not
solid. The canals in compact bone carry
blood vessels and nerves from the
bone’s surface to the living cells within
the bone.
12. Spongy bone has small spaces which
makes it lightweight.
13. Bones contain soft connective tissue
called marrow. The 2 types are red and
yellow.
13. Label the bone:
A – Compact Bone
B – Bone Marrow
C – Spongy Bone
D – Outer Membrane
14. D
15. A
16. B
17. C
18. Bones are alive and they contain
cells and tissues, such as blood
and nerves. Bones form new
tissue as you grow.
Make sure you added this:
Bone Marrow:
Red and Yellow
Red – Makes Blood
Yellow – Store fat.
I. The Muscular
System
There are about
600 muscles in
your body!!
2. Some muscles are NOT under your
control, these muscles are called
involuntary.
3. Involuntary muscles are responsible
for breathing and digesting food.
4. YOU have CONTROL over voluntary
muscles.
5. 3 Types of
Muscles
1. Skeletal
2. Smooth
3. Cardiac
Skeletal Muscle –are attached to
your bones.
= Striated Muscle.
Smooth Muscles – Used for
pushing food in the
digestive tract and in your
blood vessels to push blood
along.
CARDIAC – in the heart
6. Skeletal muscles are attached to the
bones of your skeleton and provide
the force that moves your bones.
7. A tendon is a strong connective tissue
that attaches muscle to bone.
Think “T” for Tendon, “t” for muscle
TO bone.
8. Skeletal muscles are under your
control so they are classified as
voluntary muscles.
9. Smooth muscles are
involuntary muscles,
they work
automatically to
control certain
movements in your
body such as digestion.
10. Stomach,
blood vessels,
intestines,
esophagus
11. Cardiac muscle is
ONLY found in the
HEART!!
12. Muscles can ONLY contract
and PULL.
Muscles do NOT extend or
push.
While one muscle
CONTRACTS, the other
RELAXES.
one muscle CONTRACTS, the
other RELAXES.
Muscle
Type
Voluntary
Involuntary
Reacts
Quickly
Tires
Quickly
Skeletal
Yes
No
Yes
Yes
Smooth
No
Yes
No
No
Cardiac
No
Yes
Yes
No
14. Functions of Skin:
1. Protect Body – from disease getting
inside and holds important fluids in (like
water)
2. Maintain Temperature – sweat to get rid
of body heat to help cool the body.
3. Eliminate Waste – Sweat (extra water,
proteins, salt)
4. Gather Information – sensory nerves
provide information about pressure, pain
and temperature.
5. Produce Vitamin D – important for
healthy bones