Cardiovascular
System
It is
important to learn about how your body works. A good place to start is
with your heart, blood, and blood vessels. Why? Because these are the components
that move the substances your body makes to where they are required. |
Circulatory
System
The
blood is the transport system by which oxygen and nutrients reach the body's
cells, and waste materials are carried away.
(From
Inner body)
Information
from http://users.tpg.com.au/users
/amcgann/body/circulatory.html |
THE
CIRCULATORY SYSTEM
|
The
Human Circulatory System and the Heart
|
It's
strong. It's lean. It's a pumping machine! All About the Heart
Your
heart is really a muscle. It's located a little to the left of the middle
of your chest, and it's about the size of your fist. There are lots of
muscles all over your body - in your arms, in your legs, in your back,
even in your behind. |
Sizing
Up: The Development of the Human Heart
A human
being's heart is about the size of that human being's fist. As the body
develops, the heart grows at the same rate as the fist. So an infant's
heart and fist are about the same size at birth. |
Structure
of the Human Heart
The
heart you see drawn on the average Valentine is only a rough representation
of the actual structure of the heart. Your heart is actually shaped more
like an upside-down pear. |
The
Heart
The
heart is a pumping system which intakes deoxygenated blood through the
veins, delivering it to the lungs for oxygenation and then pumping it into
the various arteries to be transmitted to where it is needed throughout
the body for energy. |
| . |
Blood
The
average adult has about five liters of blood living inside of their body,
coursing through their vessels, delivering essential elements, and removing
harmful wastes. Without blood, the human body would stop working. |
Cardiovascular
System
Circulatory
System
Circulatory
System 1
Circulatory
System: The Life Pump
Hillendale
Health: Circulatory System
Preview
the Heart |
Blood
Vessels
Blood
vessels in the dermis supply nutrients to the deep living layers of the
epidermis, as well as to dermis cells. These vessels also play an important
role in the regulation of body temperature. |
Your
Digestive System and How it Works
The
digestive system is a series of hollow organs joined in a long, twisting
tube from the mouth to the anus (see figure). Inside this tube is a lining
called the mucosa. In the mouth, stomach, and small intestine, the mucosa
contains tiny glands that produce juices to help digest food. |
Digestive
System
Food
provides us with fuel to live, energy to work and play and the raw materials
to build new cells. All the different varieties of food we eat are broken
down by our digestive system and transported to every part of our body
by our circulatory system.
(From
Inner body) |
The
Food Factory
When
you eat, your body digests the food so your cells can use it to make energy. |
The
Digestive System
The
digestive system prepares food for use by hundreds of millions of body
cells. |
How
your Digestive System Works
The
digestive system is a series of hollow organs joined in a long, twisting
tube from the mouth to the anus. Inside this tube is a lining called the
mucosa. In the mouth, stomach, and small intestine, the mucosa contains
tiny glands that produce juices to help digest food. |
Brain
Pop: The Digestive System
Digestive
System
Digestive
System 1
Food
Factory
How
the Body Works: The Digestive System
My
Body
The
Digestive System
The
Digestive System 1 |
Pulmonary
Vein
When
the muscular wall of the right ventricle contacts, the blood inside the
heart chamber is put under more pressure, and the tricuspid valve closes. |
Tutorial
This tutorial on the nervous
system starts with the brain and goes through other organs of the nervous
system. The diagrams are well done and will make a good addition to a project.
Remember to give the authors credit! |
Brain
Pop: Nervous System
Nervous
System
Nervous
System: The Control Center
Neuroscience
for Kids
Neuroscience
for Kids-Explore the Nervous System
Seeing,
Hearing, Smelling the World
Types
of Neurons |
Brain
The brain is a jelly-like
substance, which in adults weighs about three pounds. It is divided into
three parts: the brain stem, which is an extension of the spinal cord,
the forebrain (which consists mainly of the cerebruim) and the cerebellum. |
Brain
Disorders and Diseases
The Dana Alliance for Brain
Initiatives, an independent non-profit organization of more than 175 pre-eminent
neuroscientists, including 6 Nobel Laureates, recommends the Internet sites
reviewed below as helpful resources for people concerned about brain diseases
and disorders. |
The
Control Center
The
Nervous System
http://www4.tpgi.com.au/users/amcgann/body/nervous.html
(from
Inner Body site)
|
The
Eye
The eyes are the two organs
of sight. They are located in the front upper part of the skull and consist
of structures that focus an image onto the retina at the back of the eye
which is a network of nerves that convert this image into electrical impulses
to be recorded in a region of the brain |
Tongue
Anchored to the floor of the
mouth and slung at the rear from muscles attached to a spiky outgrowth
at the base of the skull, the tongue is a strong muscle that is covered
by the lingual membrane, which has special areas which detect the flavor
of food. |
Optic
Nerves
The "optic nerves" are the
second pair of the cranial nerves, and lead from the eyes to the brain.
The sensory cell bodies of the nerve fibers occur in "ganglia" within the
eyes. |
The
Ear
The ear is an organ for hearing
and balance. It consists of three parts: the outer ear, the middle ear,
and the inner ear. The outer and middle ear mostly collect and transmit
sound. |
Seeing,
hearing and smelling |
Skin
Skin is the outside covering
of body tissue, which protects inner cells and organs from the outside
environment. The skin is the largest organ of the body, and its cells are
continuously replaced as they are lost to normal wear and tear. |
Smell:
The Nasal Passage
Smell is often considered
to be the least important of all the senses, but it may be one of the oldest,
and probably acts on the subconscious more than the other |
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Please contact eweiner
for
suggestions. |
