A group of similar cells gathered together is called a
tissue. Tissues, which may be visible to the naked eye, include bone, muscle, fat, and skin.
The Knowledge of YOUR BODY and YOUR LIFE
The human body is very complex — and fantastically capable. It is
dependent on smaller,
simpler units that each serve specific purposes.
From the simplest to the most complex, they are:
The basic building block of every living thing is the
cell.
Cells themselves are extremely
A group of similar cells gathered together is called a
tissue. Tissues, which may be
visible to
the naked eye, include bone, muscle, fat, and skin.
Different kinds of tissue working together in the same place may form an
organ. Organs,
Several organs can work together in a system. The
organs of a system may be close
together, or spread across the body. Some examples are the digestive,
reproductive,
respiratory, excretory, and nervous systems.
Some kinds of tissue may be found in more than one system. Muscle tissue, for
example,
is part of the muscular, respiratory, and circulatory systems. Some organs, like
the
pancreas (which is part of the digestive and endocrine systems) pull double
duty.
Your Body: An Inside Look
Those who study the human body are known as Anatomists
Everyone is unique. We have different skin colors, hair colors, body
shapes and sizes —
but we all look alike inside. If you could peek inside your own body, what
would you see?
Hundreds of bones, miles of blood vessels, and trillions of cells, all of
which are constantly
working together, doing all kinds of different things.
Main job: To protect your internal (inside) organs from drying up and to
prevent harmful
bacteria from getting inside.
How much: The average person has a total of six pounds of skin.
Epidermis: Outer layer of skin cells, hair, nails, and sweat glands.
Dermis: Inner layer of living tissue, containing nerves and blood
vessels.
Your SKIN . . . Here are some Skin facts = it:
is flexible so that you can bend and stretch.
feels heat, cold, pain, pressure, moisture, irritation, and tickles because it
has nerves.
heals itself when wounded.
keeps heat in on cold days and releases it as perspiration on hot days.
is a watertight container for your body.
The largest bone in the body is the femur, or thigh bone;
Example: It is 20 inches long in a 6-foot-tall person.
Main job: To give shape to your body.
How many Bones ? At birth you had more than 300 bones in your
body.
As an adult you'll have 206, because
some fuse together.
What is the Smallest Bone ?
The smallest bone is the stirrup bone, in the ear; it is 0.1 inch long.
Bones don't bend. It is the "joint" that allows two bones next to each other to move.
Main job: To allow bones to move in different directions.
Main job: These bands of tough tissue hold joints together.
Ligaments are strong and flexible.
Every day, the average person's
muscles work as hard as if they were placing
2,400 pounds on a 4-foot-high shelf.
Main job: To make involuntary or voluntary body movement possible.
How many: Your body has more
than 650 muscles. Each muscle does only two things:
"contract" when being used and
"expand" when resting.
Skeletal muscles move your bones. They are called voluntary muscles
because
The job of the cardiac muscle, or heart, is to
pump blood through your body.
The cardiac
muscle is involuntary; it never stops working during your lifetime.
Smooth muscles control your internal movements, such as moving food
around in
your
intestines. These muscles are also found in the blood vessels, where they
assist the
flow of blood. Smooth muscles are involuntary.
Your fingers are mostly powered by muscles in your palm and wrist.
Main job: To hold your muscles to your bones.
Tendon fact: Tendons look like rubber bands.
This term refers to the organs, including the trachea or windpipe, lungs,
liver,
gallbladder, spleen, stomach, large intestine, small intestine, and bladder,
that fill your
body's chest and abdominal cavity.
They belong to many different systems: respiratory, digestive, and urinary.
Main job: To provide your body with food and oxygen and to remove waste.
How many: The viscera are made up of 10 organs. Just check below:
Main job: To manufacture substances that help your body to function in various ways.
There are more than 100 trillion cells in an adult.
Main job: To perform the many jobs necessary to stay
alive, such as moving oxygen
around your body, taking care of the fuel supply,
communications, and waste removal.
The egg is the largest human cell. Once it is
fertilized, all other cells begin forming.
Bone cells help build your skeleton by secreting the
fibers and minerals from which
bone is made.
Fat cells store fat. They can shrink or grow. Once you
have them you can't get rid of them.
Muscle cells are organized into muscles, which move
body parts.
Nerve cells pass nerve messages around your body.
Red blood cells carry oxygen around your body.
White blood cells fight disease.
We're now going to add a web site (comprehensive one) that
gives you many
choices for improving your health, plus it covers two products that give you
the information about YOUR CELLS.
The MBA HEALTH IMPROVING CENTER
2518 Wexford Bayne Road, Sewickley, PA 15143-8609 U S A Phone = 724-935-1847 Fax = 724-935-0035 Email = amicos@aol.com Page accessed Webmaster amicos@aol.com |
