Transcript The Skeletal System

THE SKELETAL SYSTEM
Major Organs:
Bones, cartilage,
tendons and
ligaments.
The Skeletal System
Protects,
supports,
allows movement,
produces blood cells
stores minerals
&
Factoids: Skeletal
The human hand has 27
bones; your face has 14!
The longest bone in your
body? Your thigh bone, the
femur -- it's about 1/4 of
your height. The smallest
is the stirrup bone in the
ear which can measure
1/10 of an inch.
You have over 230
moveable and semimoveable joints in your
body
THE MUSCULAR SYSTEM
Major Organs:
Skeletal muscles
and smooth
muscles throughout
the body.
The Muscular System
Allows body movement
&
maintains posture
Factoids: Muscular
You have over 30 facial
muscles which create
looks like surprise,
happiness, sadness,
and frowning.
Eye muscles are the
busiest muscles in the
body. Scientists
estimate they may
move more than
100,000 times a day!
The largest muscle in
the body is the gluteus
maximus muscle in the
buttocks.
THE DIGESTIVE SYSTEM
Major Organs:
Mouth,
esophagus,
stomach, small
and large
intestines
The Digestive System
Allows the body
to break down
food and
nutrients!
Factoids: Digestive
HOW LONG ARE YOUR
INTESTINES? At least 25 feet
in an adult. Be glad you're not a
full-grown horse -- their coiledup intestines are 89 feet long!
Chewing food takes from 5-30
seconds
Swallowing takes about 10
seconds
Food sloshing in the stomach
can last 3-4 hours
It takes 3 hours for food to move
through the intestine
THE CIRCULATORY SYSTEM
Major Organs:
Heart, blood vessels
and blood.
The Circulatory System
Transports nutrients
wastes, and other materials
and plays a role in the
immune system
Factoids: Circulatory
The body of an adult contains
over 60,000 miles of blood
vessels!
An adult's heart pumps nearly
4000 gallons of blood each
day!
Your heart beats some 30
million times a year!
The average three-year-old
has two pints of blood in their
body; the average adult at
least five times more!
A "heartbeat" is really the
sound of the valves in the
heart closing as they push
blood through its chambers.
THE RESPIRATORY SYSTEM
Major Organs:
Nose, trachea,
diaphragm and
lungs.
The Respiratory Systems
Exchanges oxygen
&
carbon dioxide
between blood &
air
Factoids: Respiratory
Your lungs
contain almost
1500 miles of
airways and over
300 million
alveoli.
Every minute you
breathe in 13
pints of air.
THE EXCRETORY SYSTEM
Major
Organs:
Kidneys,
ureters,
bladder and
urethra.
The Excretory System
Removes
solid
&
liquid
wastes
Factoids: Excretory
Ever eat kidney beans?
They were named after
your kidneys which are a
similar shape and color!
Your kidneys have about a
million structures that filter
out liquids and wastes.
About 440 gallons of blood
flow through the kidneys
each and every day!
THE NERVOUS SYSTEM
Major Organs:
Brain, spinal cord
and peripheral
nerves.
The Nervous System
Detects
sensation
&
controls
most functions
THE ENDOCRINE SYSTEM
Major Organs:
Many glands exist in
the body that secrete
endocrine
hormones. Among
these are the
hypothalamus,
pituitary, thyroid,
pancreas and
adrenal glands.
THE ENDOCRINE SYSTEM
Regulates
metabolism,
reproduction
&
other
functions
Factoids: Endocrine
Imagine your body
without glands. You'd be
without all the ooze,
sweat, mucus,
chemicals and juices in
your body which make
your body home.
For girls, puberty
generally begins
sometime between
ages 9-13 and for boys,
ages 10-15!
THE IMMUNE SYSTEM
Major Organs:
Lymph, lymph
nodes and
vessels, white
blood cells, Tand B- cells.
The Immune System
Controls the
immune response
&
fights disease
THE INTEGUMENTARY SYSTEM
The Integumentary System
(Skin)
Protects,
Regulates
Temperature
&
Prevents
Water loss
Factoids: Integumentary
As an adult, you may have
more than 20 square feet of
skin -- about the size of a
blanket.
You are likely to shed some 40
pounds of skin in a lifetime.
Right now there are over a
million dust mites, microscopic
critters invisible to the naked
eye, on your mattress and
pillow, chomping on the dead
skin cells that fell off you last
night!