- THE HUMAN ANATOMY
- The human brain is made up of about 75% water and has about 100 billion nerve
Based on studies, brain waves are more active while dreaming than when awake.
The brain begins to die after about 6 minutes without oxygen. There is a high risk
of permanent brain damage between 5-10 minutes without oxygen.
Though the brain processes pain signals, it lacks pain receptors to feel pain.
Blind people do have dreams which may be auditory, visual or both. The nature of
their dreams may often depend on whether they were born blind (congenital
blindness) or whether they became blind later on in life.
It is impossible to tickle yourself as the brain anticipates and disregards your
touch, allowing it to focus on anticipating unexpected sensation.THE BRAINText element
- THE SENSESHumans employ echolocation by using echoes emanating from nearby objects to
detect the size and location of these objects. The visually impaired use this
phenomenon for acoustic way finding.
Normally, the eye can distinguish about 10 million colours. Colour blindness
(colour vision deficiency) is more prevalent among males than females as it is
a sex-linked condition.
The nose is your personal air-conditioning system. It cools hot air, warms cold
air and filters impurities.
Hearing threshold and the ability to localize sound sources are reduced
underwater, in which the speed of sound is faster than in air.
Early studies showed that subjects who were genetically predisposed to baldness
were 78% more likely to experience taste loss sensation due to what was
hypothesized as 'balding' of the tongue.
While the four traditional senses (sight, smell, taste and hearing) are found at
specific parts of the body, the sense of touch is found all over as the touch
detector is the body organ called 'skin'.
The taller you are, the higher your centre of gravity and the easier it is for you to
fall off balance.
- BODY FUNCTIONSResearch shows human saliva does have some antibacterial agents. Wound-licking
could thus eliminate pathogens, which is useful in the absence of clean water.
Humans can survive with just one lung due to its excess capacity, with the one
compensating for the loss of the other.
The liver is the largest internal organ and gland in the body and it is thought to have
up to 500 distinct functions. There is currently no man-made organ or device
capable of emulating the full functionality of the liver.
The skin is, overall, the largest organ of the body.
Adrenaline improves strength and during an adrenaline rush, the body releases
dopamine, which could serve as a natural pain killer.
- Text elementThe soft spots on a baby's head (fontanelles) enable bony plates of the skull to flex and
facilitate passage through the birth canal. They also allow ultrasound imaging of the brain,
most of which will be inaccessible after closure of these soft spots by 18 months - 2 years.
Upon several failed studies to predict the sex of an embryo at conception, mother nature
still remains the sole force able to determine this fact.
Vernix (waxy white substance on a newborn baby's skin) is thought to protect the skin
from the long immersion in the amniotic fluid. Studies also suggest it has antibacterial
properties and it may form a physical barrier to the passage of bacteria.
Twins may share one placenta but they generally have two individual amniotic sacs.
The human embryonic heart starts beating about 21 days after conception.
Navels are scars and not defined by genetics, with about 90% of humans having innies
(depressed navels). An outie (protruded navel) is the remains of the umbilical cord or
umbilical hernia. The absence of a navel may be the result of surgery required to
correct congenital defects such as the latter as well as gastroschisis.REPRODUCTIONText element
- Appendix (Vermiform) - the appendix has no function in modern humans and people do
well after appendectomy (surgical removal of the appendix).
Wisdom Teeth - the 4 third molars (could be more) are sometimes misaligned, cause
impaction or crowding and require removal. Failure of wisdom teeth to develop occurs
in about 35% of the population...no issues.
Male Uterus - the uterus is present in men as vestigial organ hanging off the prostate gland.
Female Vas Deferens - a number of dead end tubes around the ovaries are the vestiges
of what could have developed into sperm ducts in males.
Adenoids - a mass of lymphoid tissue at the rear of the nose which may become infected,
enlarged, and may block airflow through nasal passages. May consequently require surgical
removal often along with the tonsils. The tonsils may help fight throat infections, though.
Arrector Pilli - muscles attached to hair follicles contract involuntarily due to fear or cold,
causing hairs to stand on end (goosebumps). This wards of predators and provide insulation
for most mammals. Humans, however, lack adequate hair to allow for thermal insulation.REDUNDANT BODY PARTS
- GENERAL FACTSHumans share about 98.4% of their DNA with chimpanzees.
The most common blood type is Type O, demand for it is thus high.
Identical twins, though they share their DNA, have unique fingerprints. On the other
hand, every individual has a unique smell with the exception of identical twins.
Every individual has a unique tongue print, making it potentially useful in identity
verification applications, given that it is difficult to forge.
Stress, some medication and emotional states like fear, anxiety and pain may
result in increased secretion of earwax (cerumen).
Humans have 24 ribs (12 pairs) ribs and while some people are missing a pair of ribs
(floating ribs), others have an extra pair.
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Anatomy Corner provides you with information snippets on a blend of general health matters and some intriguing facts about the human anatomy. Why don’t you take a break to discover more stuff about yourself that will blow your wig and knock your tight socks off.
The Big Question Is : How well do you know you?
 Man, The Two-Legged Britannica
The human brain cell can retain 5 times as much information as the Encyclopedia Britannica, i.e., between 1 and 7 terabytes of data.
If you thought your
hard soft disk could ever get full, I beg to differ.
 ‘Mensaic’ Dreams
Scientists have suggested that in most scenarios, the higher your intelligent quotient (IQ), the more dreams you have.
Does daydreaming count? Watch out Mensa International…cos we’re all about to bust your gates to seek membership, then.
 The Colour Of Dreamland
While the vast majority of people dream in colour, there is a small minority (about 12%) who dream only in black and white.
In this modern day of high tech, one would expect the Retina HD Display version of dreams to be out by now (not so with nightmares, though)….does anyone know when this is going to be released?
 The Cornea, A Shrewd Business Layer
Unlike other body cells, cells of the cornea (the outermost layer of the eye) lack blood supply and therefore do not rely on this for oxygen as they get it directly through the air. Oxygen initially dissolves in tears and subsequently diffuses throughout the cornea to keep it healthy.
It must be more cost-effective obtaining oxygen directly from the original source, how cool is that especially in the current global economic climate.
 Gunk Collector
Plica Semilunaris is the vestigial remnant of the nictitating membrane aka the ‘third eyelid’ found in the corner of the eye and present in birds, reptiles and fish. Whilst in animals it can be drawn horizontally across the eye to protect and clean it, it appears to only create gunk (‘sleep’) in humans.
A third eyelid… who wants that? That would have been another make-up and botox headache for those who would want to enhance the look of this membrane.
 Pupils Love to Hate
The pupils are known to dilate when one beholds someone they love and also tend to dilate when one sees someone they hate.
Ah, no wonder there is a fine line between love and hate! Let’s be clear on this now… stalker, let’s establish your motive.
 Slumberly Deprived
One could go without sleep for a maximum of 11 whole days. Any time more than this could result in radical personality and psychological changes…could potentially knock your lights out for good!
Question is: ‘Is there another light at the end of the tunnel?’
 Aquatic Deprivation
One can survive without food for weeks but when it comes to this powerful free drink called ‘water’, aka aqua or H2O, you simply don’t joke around with it. The longest one can go without water is for 10 days, after which time you’ll check out as a result of extreme dehydration.
Let’s go take a gulp.
 Sinuses Exposed!
The role of the sinuses (the mucus and air-filled tubes located in the head) are unknown to scientists, though some possible functions have been suggested.
So upon all the inflammation and headaches you cause mankind it turns out you don’t even have a ‘legal standing’ in the body, if not questionable.
 Kind-Hearted Lung
The left lung is smaller than the right lung and has a notch to accommodate the shape of the heart. The heart, though fairly centralized, is slightly positioned on the left and flanked by the lungs. The latter may serve as a layer of soft, shock absorbent protection for the heart.
Even our internal organs know what we call team spirit and peaceful co-existence. Couples, business partners, colleagues, flat mates, and neighbours, wouldn’t it be cool to take our cue from these vital organs?
 Winding And Endless Entrails
The small intestines measure 22ft on average and has an absorption surface area of about 250 square metres (approx 2,700 square feet), the size of a tennis court.
Wimbledon participants, did you hear that?…your venue lies within you.
 Free Gastric Revamp
The stomach lining regenerates itself every three to four days otherwise the gastric acid that acts on food would, in turn, digest the stomach. Hydrochloric acid (HCL), one of the constituents of gastric acid, is said to be potent enough to dissolve a razor blade.
Kudos is due you, mother nature.
 Touchy Trigger Finger
The index finger is the most sensitive finger on the human hand as it has the most nerve endings.
Oh, it now makes sense why upset people warn or make admonitory gestures with their index finger…..unlike the other fingers it is quick to take offence, rather touchy….please don’t trigger the trigger finger.
 Territorial Skin Flora
Several millions of bacteria call every inch of your skin home. Resident microbes can cause skin diseases, enter the blood stream and cause life-threatening diseases for immuno-suppressed individuals. However they are normally non-pathogenic and either harmless or beneficial to the host. Benefits include the prevention of colonization of the skin surface by pathogenic organisms. This, they do by stimulating the skin’s immune system, competing for nutrients, or secreting chemicals against them.
If you thought Gaza Strip, colonization, weapons of mass destruction and chemical warfare only existed and occurred beyond the body, take a moment and think again.
 Emotional Numbering Muscles
One engages about 17 muscles for a smile and 43 for a frown.
Not quite sure about that for a poker face, attempts to contact Lady Gaga to obtain the actual figure proved futile.
 Double Fetal Immunity
A fetus acquires fingerprints at the age of 3 months.
With regard to the ‘prenatal legal system’, is there an alternative means of identification?…does this mean the embryo / fetus is free to act with impunity in the first trimester? That’s not fair, given that they also acquire passive immunity in the third trimester.
 Infantile Eve Traits
A baby is born without a kneecap (patella) but with a cartilaginous growth which later transforms into a conventional kneecap by the ages of 3 years in females and 5 years in males.
Even at such a tender age, Eve is at work in females… grabs the forbidden fruit before Adam could say Jack Robinson… and now a kneecap, a mature/ripe one for that matter.
 Overspeeding Ruthless Sneeze
A sneeze zooms out of your nose or mouth at over a 100m/hr, suppression is therefore not advisable as it can cause damage to the body. A cough leaves the body at a lesser speed of 60m/hr, though.
You may want to squat when you spot any one of these approaching…..you can never predict their contents, you know.
 Time Dilation
The sense or perception of time is said to be subjective : time seems to fly when we’re having fun but it forever drags on when we’re involved in something rather monotonous or unpleasant.
‘When a man sits with a pretty lady for an hour, it seams like a minute. But let him sit on a hot stove for a minute and it’s longer than one hour.’ ~ Albert Einstein
Pretty lady? wow… fuzzy hair, distracted lifestyle? Contrary to your perception of him, this genius knew aesthetics when he saw one.
 Human Tail Curtailed
One of the redundant human parts is the coccyx. This is the remains of the human tail, i.e., the last 5 vertebrae of our backs which are typically fused together.
Imagine what the scenario would have been in bank or supermarket queues, had we all possessed tails. Absolute chaos! I reckon they would have come in varying lengths, with those having longer tails wagging and flaunting them a moment longer than necessary. What a relief!