Why do men have 2 testicles?

Question

Why do men have two testicles?
We have one heart, one liver, one gall bladder and one of almost all our other organs, so why two testicles?

for that matter, why do women have two ovaries?

Answer 1

To produce plenty of sperm to ensure pregnancy. Gotta hit her with both barrels.

Answer 2

bilateral symmetry (see link below)

FYI:
Reproductive System: The female reproductive system usually consists of two opposed tubular gonads (amphidelphic, didelphic), one extending anteriorly and one posteriorly from the vulva (external opening). However, in some groups the posterior gonad or the anterior gonad may be vestigial and non-functional so that forms with a single gonad (monodelphic) are not uncommon. Possessing one ovary located anterior to the vulva is termed prodelphic. The female gonad consists of a distal cap cell followed by a germinal zone where oocytes develop, a growth zone, an oviduct and the uterus and vagina. There is frequently a spermetheca (for storage of spermatozoa) located at the anterior end of the oviduct. The male reproductive system may consist of one (monorchic) or two (diorchic) gonads. If there are two the testes are opposed. The male gonad consists of the testis (germinal zone and growth zone), the seminal vesicle (for storage of sperm) and the vas deferens which functions as an ejaculatory duct and opens into the cloaca. The male reproductive system has various copulatory structures associated with it. The most conspicuous of these are the spicules, the gubernaculum, and in some forms the caudal alae (also called the bursa).

Answer 3

nicely that's all to do with evolution or in case you would fairly that's the way god created us, we've 2 of each difficulty so as that if one fails there is yet another to assist us by, 2 ears, 2 eyes 2 kidneys, 2 hands, 2 legs notwithstanding the question remains why do not we've 2 hearts or 2 livers yet customarily there is two so we adult men have 2 testicles so as that we are able to assure the propagation of the human race, that's why i imagine I actual have 2 testicles desire that solutions your question?

Answer 4

The body is basically semitrical. The digestive tract & central organs aren't because having two hearts woudl be counter productive. You don't need 2 gall bladders, you could get by w/out any.

Answer 5

Human beings belong to the large category of animals known as "bilateria," which means we exhibit bilateral symmetry. If you take a drawing of a human figure of either sex and draw a line down the middle, you will see that we are approximately a mirror image on either side of that line.

Two eyes, two nostrils, two front teeth, two nipples, two pectoralis major muscles, two love handles, two legs, two feet.

And the genital glands are also bilaterally symmetrical. The viscera (major internal organs) for the most part are singular because they are part of the gut (scientific term) that developed in a straight line of descent from worms and other radially symmetrical animals that have only one gut down the middle.

Remember we have only one amygdala and only one umbilicus, but there are two kidneys, two adrenal glands, two lungs. One heart, but it comes in two sections because it developed from animals that had more than one heart, like earthworms.

If you count everything up, though, probably bilateral organs are more common than singular ones.

Answer 6

Number 1 reason we are on Earth? To reproduce. All evolution aims towards that. I need two testicles to make sure I have the best shot possible.
Why do I have JUST two testicles?

Answer 7

Sorry.. I can find NO answer to that question.. which is a good one. I have (or had) never thought about it until you asked. I have searched the internet front and back and can find no answer.,,,,,it is possible that there are two just in case one fails to function.

The function of both testis (gonads) are the same and men, born with ONE gonad can function as well as most individuials with two

Answer 8

LOL

And I was about to point out that women have two ovaries!

How about...Back-up just in case something happens to one, you can still have children.

I'm certainly glad I have two ovaries, because one was over exposed to radiation treatment when I was a child. Not kidding.

Answer 9

Men have 2 testicles for several reasons.

#1 So that way they can keep both hands busy scratching if they so choose.
#2 because 3 wouldn't fit in to bikini briefs.

Answer 10

God said, "reproduce," and thus evolution runs it course. If men had 3 balls, they'd be playing with them incessantly. Luckily we only have 2 to play with which gets boring after 5 or 6 hours. So 2 balls is the E.S.S. (evolutionary stable strategy) equipping mankind with the power to screw but not screw around too much.