Hi,
My
name is Franz Devantier, creator of this blog. I
am an Herbalist, who uses local and indigenous herbs when available, in
preference to imported herbs. Because
Herbalists deal with living human beings, it is important to have an
understanding of Anatomy and Physiology, as well as many other related
subjects,
such as How to grow old gracefully with Stem
Cell Enhancers.
Maintaining
Life
Maintenance of
Boundaries
Every living organism maintains its boundaries, so that its
internal environment or its inside’s, remain distinct from the outside
environment. In a single-cell organism,
the boundary is a limiting membrane that contains the contents of the cell, and
admits needed substances, while restricting the entry of potentially damaging
or unnecessary substances.
In a similar way all the cells of our body are surrounded
by a selectively permeable membrane. In
addition to this the body as a whole is enclosed and protected by the
integumentary system or the skin. The
integumentary system plays an important role in protecting our internal organs
and preventing them from drying out. If
our internal organs were to dry out the result would be fatal to us. The integumentary system also protects us
from bacterial invasion, and keeps the bacteria on our skin under control, by
the skin surface being a little bit more acidic, than the rest of our
bodies. The skin also protects us from
all manner of chemicals that get into our environment, as well as from harmful
physical factors in the environment.
Movement
By movement we look firstly at all the activities that are
promoted by the muscular system of our bodies.
We are able to move ourselves from one location to another, by
manipulating the external environment.
This may take the form of swimming, walking or running. We can also manipulate our environment in a
finer way with our fingers, like playing the piano, or writing, typing on a
computer etc. The muscular system
relies heavily on the skeletal system, which provides the body framework for
the muscles to pull on, as they perform their work.
Movement also occurs as foodstuffs are propelled through
the digestive system, also with muscles tissue in the linings of the
intestines, mainly by the process of peristalsis. Urine moves through the Urinary system and is
propelled to outside the body. Blood is
pumped around the body in the cardiovascular system.
On a cellular level, the ability of the muscle to move by
shortening is called “contractility”.
The blood delivers oxygen and nutrients to the cells, which move into
the cells, and carbon dioxide and other waste products move out of the cells,
and back into the blood stream, with some ending up in the Lymph system.
Responsiveness
Responsiveness or more correctly irritability, is the
ability to sense changes or stimuli in the environment, and then once sensed, the
ability to react or respond to them.
If you were for example to cut your hand on a piece of
broken glass, there would occur a withdrawal reflex. You would involuntarily pull your hand from
the painful stimulus, in this case the broken glass. This would have happened without you thinking
about it, it is something that would just happen.
In the same way if carbon Dioxide in your bloodstream were
to rise to abnormally high levels, then chemical senses would respond by
sending messages to the brain centers controlling respiration, and your
breathing rate is accelerated, in an attempt to normalize the carbon dioxide
levels in your bloodstream. This would
have happened without you being aware of it, although you may notice that you
seem to be breathing faster or heavier than before.
Nerve cells are highly irritable and communicate rapidly
with each other by conducting electrical impulses. Because of this the nervous system takes on
the biggest part of the responsibility for responsiveness. However all of your body cells exhibit
irritability to some extent. Some of the
responses to stimuli are on a chemical level and controlled by hormones
operating within the endocrine system.
Digestion
In a nutshell, digestion is the breaking down of ingested
foodstuffs into simple molecules, that can be absorbed into the
bloodstream. The cardiovascular system
then distributes the blood that is loaded with the molecules from the ingested
foodstuffs, throughout the body.
In a single celled organism, such as the amoeba, the cell
itself is the digestive factory.
Foodstuffs are ingested by the cell, and broken down into useful and
simple molecules, and the used and waste products are expelled from the cell
again. In the human body with trillions
of cells, the digestive system performs the function of digesting the food, and
the cardiovascular system performs the function of transportation throughout
the body.
Franz Devantier,
How to grow old gracefully with Stem
Cell Enhancers.
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