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The pudendal nerve innervates both your anus and your penis, it can also differentiate solid, liquid, and gas.
VOMERONASAL ORGAN
A tiny pit on each side of the septum is lined with nonfunctioning chemoreceptors. They may be all that remains of a once extensive pheromone-detecting ability.
EXTRINSIC EAR MUSCLES
This trio of muscles most likely made it possible for prehominids to move their ears independently of their heads, as rabbits and dogs do. We still have them, which is why most people can learn to wiggle their ears.
WISDOM TEETH
Early humans had to chew a lot of plants to get enough calories to survive, making another row of molars helpful. Only about 5 percent of the population has a healthy set of these third molars.
NECK RIB
A set of cervical ribs—possibly leftovers from the age of reptiles—still appear in less than 1 percent of the population. They often cause nerve and artery problems.
THIRD EYELID
A common ancestor of birds and mammals may have had a membrane for protecting the eye and sweeping out debris. Humans retain only a tiny fold in the inner corner of the eye.
DARWIN'S POINT
A small folded point of skin toward the top of each ear is occasionally found in modern humans. It may be a remnant of a larger shape that helped focus distant sounds.
SUBCLAVIUS MUSCLE
This small muscle stretching under the shoulder from the first rib to the collarbone would be useful if humans still walked on all fours. Some people have one, some have none, and a few have two.
PALMARIS MUSCLE
This long, narrow muscle runs from the elbow to the wrist and is missing in 11 percent of modern humans. It may once have been important for hanging and climbing. Surgeons harvest it for reconstructive surgery.
MALE NIPPLES
Lactiferous ducts form well before testosterone causes sex differentiation in a fetus. Men have mammary tissue that can be stimulated to produce milk.
ERECTOR PILI
Bundles of smooth muscle fibers allow animals to puff up their fur for insulation or to intimidate others. Humans retain this ability (goose bumps are the indicator) but have obviously lost most of the fur.
APPENDIX
This narrow, muscular tube attached to the large intestine served as a special area to digest cellulose when the human diet consisted more of plant matter than animal protein. It also produces some white blood cells. Annually, more than 300,000 Americans have an appendectomy.
BODY HAIR
Brows help keep sweat from the eyes, and male facial hair may play a role in sexual selection, but apparently most of the hair left on the human body serves no function.
PLANTARIS MUSCLE
Often mistaken for a nerve by freshman medical students, the muscle was useful to other primates for grasping with their feet. It has disappeared altogether in 9 percent of the population.
THIRTEENTH RIB
Our closest cousins, chimpanzees and gorillas, have an extra set of ribs. Most of us have 12, but 8 percent of adults have the extras.
MALE UTERUS
A remnant of an undeveloped female reproductive organ hangs off the male prostate gland.
FIFTH TOE
Lesser apes use all their toes for grasping or clinging to branches. Humans need mainly the big toe for balance while walking upright.
FEMALE VAS DEFERENS
What might become sperm ducts in males become the epoophoron in females, a cluster of useless dead-end tubules near the ovaries.
PYRAMIDALIS MUSCLE
More than 20 percent of us lack this tiny, triangular pouchlike muscle that attaches to the pubic bone. It may be a relic from pouched marsupials.
COCCYX
These fused vertebrae are all that's left of the tail that most mammals still use for balance and communication. Our hominid ancestors lost the need for a tail before they began walking upright.Comment
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Babies don't cry tears for about 6 months after they're born.
I thought that was crazy the first time I saw my kid cry tears and thought about how he hadn't done that before...Slicktop City!Comment
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Some Amish are inbred enough to have their urine smell like maple syrup.Comment
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Every day I wake up we drink a lot of coffee and watch the CNN
Every day I wake up to a bowl of clover honey and let the locusts fly in.
Lobsterbacks attack the town again
Wrap all my things in aluminum
Beams of darkness streak across the sky
Pink rays from the ancient satellite
Every time I look out my window same three dogs looking back at me.
Every time I open my windows cranes fly in to terrorize me.Comment
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I've heard when a person receives a bone marrow transplant, they essentially become the donor internally. They gain all the donor's immunities, allergies, and everything else. Interesting to think that you would basically be a different person on the inside.
Also, I find it hard to believe that it's this common, but apparently 1 in 250 embryos have a disorder called cyclopia, which results in the failure of the eyes to divide into 2 separate cavities, as well as the development of a proboscis instead of a nose. Check it out, it's pretty gross.Comment
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Originally posted by NitroRustlerDriver View Post
Yup!!!1 I just finished watching the series "The Human Body" - episode: Strenght on the Discovery Channel this. Adrenaline is only part of the body's instand boosting systems! :DComment
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If you blow in a babys face whild it is crying/screaming, it will immediatly stop.Comment
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If your hand is bigger than your face, you have cancer.
Originally posted by vladComment
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I think things that we do everyday are pretty amazing - breathing, your heart beating, and blinking - all done on its own ( I know that you can control breathing and blinking, but you can't stop it)
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Well technically, you can stop it. You'll just be dead.Originally posted by che13 View Post
SC*AR
Originally posted by JamesE30Comment
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You can't really stop your breathing on your own. You can hold your breath - but you would pass out before you die - so you really can't "stop" it.Originally posted by Alkasquawlik View PostComment
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I don't think you can make yourself pass out by holding your breath.
...now if someone holds it for you....Comment
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