Top 9 Useless Body Parts By The Discovery Channel
When you're sick you may feel that certain body parts are more trouble than they're worth. And in some cases, you'd be right. While the human body has evolved and adapted significantly since caveman days, a few biological traces of our prehistoric ancestors still remain with us in the form of freeloading body parts we lug around with us, but have no use for. Take a peek at the top offenders!

9. Plica semilunaris
You may not know it, but you have a third eyelid. Pull open the two more noticeable eyelids and take a look—it's located right in the corner by the tear duct. This small third eyelid is left over from what's known as a "nictitating membrane," which is still present in full form in some animals including chickens, lizards and sharks.

8. Body hair No doubt we were once hairier. Up until about three million years ago, we were covered with body hair. But by the time Homo erectus arrived, the ability to sweat meant we could shed our woolly ways.


7. Sinuses Doctors don't really know much about sinuses—only that we have a lot of them. Possibilities for their function range from insulating our eyes to changing the pitch and tone of our voice.

6. Adenoids
Adenoids trap bacteria, but they're also prone to swelling and infection. Just ask any seven-year-old. Luckily, our adenoids shrink with age and are often removed, along with...


5. Tonsils Also prone to swelling and infection. If you still have them when you reach your 30s, it's almost an accomplishment.
4. Coccyx More useful as a game-winning Scrabble word than as part of the anatomy, the coccyx or tailbone, is made up of several fused vertebrae left over from the days when we had tails.


3. Arrector pili When we were hairier (see No. 9), the arrector pili made the hairs stand on end when we needed to appear bigger and scarier. Now, it just gives us goose bumps.

2. Wisdom teeth Back in the day, when we ate mammoth meat off the bone and didn't floss afterward, our teeth tended to fall out. Therefore, when those reserve molars, aka "wisdom teeth," came in, they were welcomed. Nowadays, fluoride and dental plans have just made them a huge pain.


1. Appendix Darwin claimed the appendix was useful for digestion during our early plant-eating years; it's dwindled down to little since we started eating more digestible foods.

oohh this is on ma msn homepage for the internet was guna read it but

hmm i dOnt agree with the fact tht body hairz useless coz based On My knOwledge it insulates Our skin wen we feel cold by standing erect and trappin air.. and hair remove karney pe i think u feel colder as therez no insulation

Mera maan'na hai kay ALLAH kay banaye har a'azo ka koi na koi faida zaroor hai, science jitni bhi taraqi kar lay kabhi ALLAH kii knowledge tak nahin pohonch sakti iss liey yeh kehna munasib nahin kay yeh body parts useless hain,..

Forgive me bro but I really didn't like this term "useless body parts"

appreciated....... actually I jz took this article from msn.....

Yep i'vs learnt dat n it is actually true

do u really think that our hairs r so thick that they can prevent ur and help us in regulating temp.......???

girls tend to do waxing so does that means that temp regulation is diff in males n females???

It's not dat yeah it will help us make a huge differnce
But when u do remove hair i am sure u will feel a slight diffrence to when you did have the Hair
Aur ajj kal Larke be waxing karte hei salon mein jao woh b line mein khare hote hei

still the main thing is that these hairs r not performing any important part in our body then.. as v can still enjoy our life without them................

Ser k bal k bina mein Enjoy dat wud b

well the discussion is about body hairs, not to the hairs on head.......

thickness of hair ka is sey koi talluq nhi... wen we feel cOld the hair of Our bOdy stands up and traps air in between which acts as an insulator... this is a defence mechanism of our body against cold... and this mechanism is Only for the Outside temp NOT for the inside us k liye diff mechanism hai...
and as based on my xperience wen ive wxed my hair i do feel colder than the tymz my hairz not waxed