10 Useless Human Body Parts





We should not always assume that every human
development has an adaptive explanation.
Because of the complexity of evolution, the
human body still sustains a few reminisce of our
ancient lives. Here are some useless human
body parts that serve very little or no purpose in
our survival.

10. Appendix


When primitive humans were largely food
gatherers vegetarians, the appendix helped in the
digestion of food. Located in a pouch like
structure between large and the small intestine,
the appendix basically assisted the latter in
digesting cellulose and possibly also produced
white blood cells. Though lying dormant, the
appendix can causes a host of problems like it
can get infected causing appendicitis – an
inflammation of the appendix. It causes
abdominal pain, decreased appetite, nausea etc
but most of the time people don’t have the
symptoms.



9. Coccyx


Otherwise called the tailbone, it’s believed to the
remnant of our pre-historic ancestor’s body part.
Also found in Apes, the Coccyx is the final
hanging segment of our vertebral column. It is
comprised of three to five rudimentary vertebrae.


So why exactly did we need a tail in ancient
time? Scientist believe that the tail helped in
communicating and balancing our structure but
since we humans learned to walk upright, the tail
slowly ceased to exist leaving only a speck of
reminder hanging useless. But despite the
removal of the tailbone is quiet a task since it’s
attached to a number of intricate ligaments,
muscles and tendons.


8. Paranasal Sinuses


Human sinuses are basically air-filled spaces
found surrounding the nasal cavity in our face.
What is the purpose of their existence now is
subjected to much debate but when infected our
sinuses causes much pain. Previously the
paranasal sinuses were responsible for our
heightened sense of smell that allowed our
ancestors to hunt on daily basis and survive.


However some believe paranasal sinuses serves
a few possible functions like increase resonance
of our voice, regulate pressure, lighten the
weight in the front of our skull etc. Inflammation
of the sinuses causes nasal irrigation and can
even lead to cancer.



7. Tonsils


Other than the mass of tissue situated at either
side at the back of the human throat, there are a
number of other tonsils like the adenoid tonsil,
two palatine tonsils, the lingual tonsil and two
tubal tonsils.

Tonsils help in protecting the throat
from inhaling foreign pathogens and against
indigestion but most of the time they prove to be
more dangerous than beneficial. Tonsils are very
much prone to infections that may lead to a host
of problems and may require surgical removal
sometimes.



6. Arrector Pili Muscles


The arrector pili muscle causes the phenomenon
we commonly refer to as goose bumps. There
are small muscles attached to our hair follicles
which when contracts causes the hair to stand
up. In most animals the goose bumps are a
defence mechanism. When in fear the hair ends
rise up to make them look bigger in hopes of
deterring predators.

The arrector pili muscles
cannot be consciously controlled. Some experts
have come up with one purpose for the
contraction of the muscles and their legitimacy
of staying in our body is that the ejected hair
helps trap and retain hot air inside our body. But
since human body has relatively very less hair to
allow thermal insulation, the argument kind of
falls flat.



5. Wisdom Tooth


Also called the third molar it’s developed
between the ages of 17 and 25. According to
researchers, the out-of-place wisdom tooth was
useful to our ancestors for grinding down on
plant tissues. But today our skulls have become
smaller and the number of teeth has gone down
because they are no longer required. The change
of the diet still couldn’t get rid of the third molar
or wisdom teeth completely. It’s a painful
procedure to remove an infected wisdom tooth.


4. Palmaris Longus Muscles


A completely useless muscle that stretches
between the flexor carpi ulnaris and the flexor
carpi radialis. About 14% of the world population
has no Palmaris Longus muscles but that doesn’t
affect their grip strength. This long, narrow
muscle was once useful when our ancestors had
to climb with hands. One can feel the muscles
while flexing the wrist and touching the pads of
the thumb and the fifth finger. It can be felt
palpitating, which is why sometimes medical
students mistake it for a nerve.


3. Plica Semilunaris of Conjunctiv
[img]http://www.wonderslist.com/10-useless-human-body-parts/plica-semilunaris-of-conjunctiva/[/img]


Plica semilunaris is also called the third eyelid,
located in the corner of our eye next to our tear
duct. It’s a small folded fragment seen
prominently when we move our eyes. The Plica
semilunaris is said to help the eye maintain tear
drainage and also allows free rotation of our
eyes. Without the Plica semilunaris our eye
would limited movements because the eyeball
will be attached directly to the conjunctiva. But
even then its role is quiet restricted because of
its tiny size. Moreover the existence of the Plica
semilunaris is not absolutely necessary for our
survival.




2. Subclavius Muscle



The Subclavius Muscle is small triangular thick
tendon that stretches between our first rib and
our collarbone. Lying beneath our shoulders, the
muscle helps carry our shoulders forward and
downward, depress our shoulders. Subclavius
Muscle was useful when primitive humans
walked on all four but today it pretty much of no
good use. The muscle is not found in everyone,
some have only one, some two and some none
at all.


1. Male


Nipple develops in a foetus even before the
gender is determined. It’s only on its 6th week
that the male hormones such as testosterone
start to take shape. At this point the male
nipples stop to develop further but sometimes fat
tissues accumulate around the nipple making
them swell and become seemingly similar to
female breasts. In pubescent boys, high levels of
estrogen can also lead to swelling around the
nipple making them looking larger. Though
functionless, male nipples are pretty sensitive
and can develop breast cancer.

pls comment so as to serve as encouragement

[img]https://www.z-p3-scontent-amt2-1.xx.fbcdn.net/v/t1.0-9/cp0/e15/q65/s851x315/20953645_1177451605731789_7290673968912274891_n.jpg?efg=eyJpIjoiYiJ9&_nc_eui2=v1%3AAeEYfYf7KgI8sB6CeZHW6q_yMo-RxXTPsmMPXhxJyna5wo-vBWIFbIP8UHSLxfAkX8u2viTnlfLaRm0UFaRvdhYwHVtcUXolU8D4aJHgtr3IJA&oh=e8152c47513d81bdee5d783048294415&oe=5A1CA572[/img]

how much can they go for in the human parts market

laughing in Chinese way