Interesting Physiological Facts
Some Ultimate facts on our Body Parts
Unbelievable Physiological facts
Ultimate Physiological facts
The
Brain
Complex and poorly understood, the brain is what makes
everything work properly. The body may be kept alive, but without the brain, a
person can’t truly live. Here are some interesting and weird facts about the
brain.
1. The
brain doesn’t feel pain: Even though the brain processes pain
signals, the brain itself does not actually feel pain.
2. Your
brain has huge oxygen needs: Your brain requires 20 percent
of the oxygen and calories your body needs — even though your brain only makes
up two percent of your total body weight.
3. 80%
of the brain is water: Instead of being relatively solid, your
brain 80% water. This means that it is important that you remain
properly hydrated for the sake of your mind.
4. Your
brain comes out to play at night: You’d think that your brain is
more active during the day, when the rest of your body is. But it’s not. Your
brain is more active when you sleep.
5. Your
brain operates on 10 watts of power: It’s true: The amazing
computational power of your brain only requires about 10 watts of power to
operate.
6. A
higher I.Q. equals more dreams: The smarter you are, the more
you dream. A high I.Q. can also fight mental illness. Some people even believe
they are smarter in their dreams than when they are awake.
7. The
brain changes shapes during puberty: Your teenage years do more
than just change how you feel; the very structure of your brain changes during
the teen years, and it even affects impulsive, risky behavior.
8. Your
brain can store everything: Technically, your brain has the capacity
to store everything you experience, see, read or hear. However, the real issue
is recall — whether you can access that information.
9. Information
in your brain travels at different speeds: The neurons in your
brain are built differently, and information travels along them at different
speeds. This is why sometimes you can recall information instantly, and
sometimes it takes a little longer.
Your
Senses
You might be surprised at the amazing things your various
senses can accomplish.
1. Your
smell is unique: Your body odor is unique to you — unless you
have an identical twin. Even babies recognize the individual scents of their
mothers.
2. Humans
use echolocation: Humans can use sound to sense objects in their
area using echolocation. It is thought that those who are blind develop this
ability to heightened effectiveness.
3. Adrenaline
gives you super strength: Yes, with the proper response in certain
situations, you really can lift a car.
4. Women
smell better than men: Women are better than men at identifying
smells.
5. Your
nose remembers 50,000 scents: It is possible for your nose
to identify and remember more than 50,000 smells.
6. Your
hearing decreases when you overeat: When you eat too much food, it
actually reduces your ability to hear. So consider eating healthy— and only
until you are full.
7. Your
sense of time is in your head: How you experience time is all
about your perception. Some speculate that stress can help you experience time
dilation. Apparently,
time manipulation isn’t just for superheroes.
Reproduction
How we as a species reproduce offers all sorts of
interesting weird facts. Here are some of the weirder things you might not
know.
1. Your
teeth are growing before birth: Even though it takes months
after you are born to see teeth, they start growing about six months before you
are born.
2. Babies
are stronger than oxen: On a pound for pound basis, that is. For
their size, babies are quite powerful and strong.
3. Babies
always have blue eyes when they are born: Melanin and exposure to
ultraviolet light are needed to bring out the true color of babies’ eyes. Until
then they all have blue eyes.
4. Women
might be intrinsically bi: There are sex studies that indicate that
women might bisexual intrinsically, no matter how they class themselves, while
men are usually either gay or straight.
5. Most
men have regular erections while asleep: Every hour to hour and a half,
sleeping men have erections — though they may not be aware of it.
7. Sex
can be a pain reliever: Even though the “headache” excuse is often
used to avoid sex, the truth is that intercourse can provide pain relief. Sex
can also help you reduce stress.
8. Chocolate
is better than sex: In some studies, women claim they would rather
have chocolate than sex. But does it really cause orgasm? Probably not on its
own.
Body
Functions
The things our bodies do are often strange and sometimes
gross. Here are some weird facts about the way your body functions.
1. Earwax
is necessary: If you want healthy ears, you need some earwax
in there.
2. Your
feet can produce a pint of sweat a day: There are 500,000 (250,000 for
each) sweat glands in your feet, and that can mean a great deal of stinky
sweat.
3. Throughout
your life, the amount of saliva you have could fill two swimming
pools: Since
saliva is a vital part of digestion, it is little surprise that your mouth
makes so much of it.
4. A
full bladder is about the size of a soft ball: When
your bladder is full, holding up to 800 cc of fluid, it is large enough to be
noticeable.
5. You
probably pass gas 14 times a day: On average, you will expel
flatulence several times as part of digestion.
6. A
sneeze can exceed 100 mph: When a sneeze leaves your body, it does so
at high speeds — so you should avoid suppressing it and causing damage to your
body.
7. Coughs
leave at 60 mph: A cough is much less dangerous, leaving the
body at 60 mph. That’s still highway speed, though.
Musculo skeletal
System
Find out what you didn’t know about your muscles and bones.
1. Bones
can self-destruct: It is possible for your bones to destruct
without enough calcium intake.
2. You
are taller in the morning: Throughout the day, the cartilage between
your bones is compressed, making you about 1 cm shorter by day’s end.
3. 1/4
of your bones are in your feet: There are 26 bones in each
foot, meaning that the 52 bones in account for 25 percent of your body’s 206
bones.
4. It
takes more muscles to frown than to smile: Scientists can’t agree
on the exact number, but more muscles are required to frown than to smile.
5. When
you take a step, you are using up to 200 muscles:
Walking uses a great deal of muscle power — especially if you take your 10,000
steps.
6. Your
tongue is the strongest muscle in your body: Compared to its size,
the tongue is the strongest muscle. But I doubt you’ll be lifting weights with
it.
7. Bone
can be stronger than steel: Once again, this is a pound for pound
comparison, since steel is denser and has a higher tensile strength.
Unnecessary
Body Parts
We have a number of body parts that are, well, useless. Here
are some facts about the body parts we don’t actually need.
1. Coccyx: This
collection of fused vertebrae have no purpose these days, although scientists
believe it’s what’s left of the mammal tail humans used to have. It may be
useless, but when you break your coccyx, it’s still painful.
2. Pinkie
toe:
There is speculation that since we no longer have to run for our dinner, and we
wear sneakers, the pinkie toe‘s evolutionary purpose is disappearing — and
maybe the pinkie itself will go the way of the dodo.
3. Wisdom
teeth: This third set of molars is largely useless, doing little
beyond crowding the mouth and sometimes causing pain.
4. Vomeronasal
organ: There are tiny (and useless) chemoreceptors lining the
inside of the nose.
5. Most
body hair: While facial hair serves some purposes, the hair found on
the rest of body is practically useless and can be removed with few ill
effects.
6. Female
vas deferens: A cluster of dead end tubules near the ovaries
are the remains of what could have turned into sperm ducts.
7. Male
Uterus: Yeah, men have one too — sort of. The remains of this
undeveloped female reproductive organ hangs on one side of the male prostate
gland
8. Appendix: Yep,
your appendix is basically useless. While it does produce some white blood
cells, most people are fine with an appendectomy.
Random
Weird Body Facts
Here are a few final weird facts about the human body.
1. Your
head creates inner noises: It’s rare, but exploding head
syndrome exists.
2. Memory
is affected by body position: Where you are and how you are
placed in your environment triggers memory.
3. You
can’t tickle yourself: Go ahead. Try to tickle yourself.
4. Being
right-handed can prolong your life: If you’re right-handed, you
could live up to nine years longer than a lefty.
5. Only
humans shed emotional tears: Every other animal that
produces tears has a physiological reason for doing so.
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