Used in medical or clinical settings, often relating to health or functioning of the reproductive system.

Medical Context

'Testis' usually refers to the internal gland, while 'testicle' can also mean the external scrotum.

Not Interchangeable

It is specific to males and should not be used to refer to female reproductive organs.

Gender-Specific

 tells the proto-gonads, which we all have in the fetal life, to become testes. So in the fetal life, those testes are pumping out testosterone. But because this individual lacks receptors to hear that testosterone, the body doesn't react to the testosterone. And this is a syndrome called androgen insensitivity syndrome.

Alice Dreger: Is anatomy...

 cuter factor than a wart ogres fish I suppose maybe baby warthogs aren't too bad but these guys these big male warthogs are not the prettiest things in the world you can see they've got big big warts on them which is how I know that they're both boys as well as well you can see the male testes underneath

Safari Live - Day 110 PIPE...

 they actually have the capacity to lay eggs even though they're genetic males. What we proposed, and what we've now generated support for, is that what atrazine is doing is wreaking havoc causing a hormone imbalance. Normally the testes should make testosterone,

Tyrone Hayes + Penelope...

 and they look like this. Then later in life, she can transition into a male and she'll look like this. But it's not just a spectacular wardrobe change. Her body can reabsorb her ovaries and grow testes in their place. In just a few weeks,

Are we interrupting the...

 merely determined whether you would be born with ovaries or testes, and it was the sex hormones that those organs produced that were responsible for the differences we see in the opposite sex. But we now know that that theory was wrong --

Why Medicine Often Has...

 during puberty. In men, puberty begins when the testes start secreting testosterone. That triggers the gradual development of the sexual organs, makes facial hair sprout, and causes the voice to deepen and height to increase.

How do your hormones...

 This system is responsible for creating life the primary organs involved differ between the sexes with ovaries fallopian Tubes the uterus and vagina found in women and testes and a sperm channel found in men together

Human Body 101 PIPE...

 Most of my intersex friends have had operations like these. Oftentimes, they will remove testes like mine, even though my risk of testicular cancer is lower than the risk of breast cancer

The way we think about...

 male right whales have gigantic testes the largest in the world they weigh a ton and produce gallons of sperm one

The Sperm Whale Prepares...

 male right whales have gigantic testes the largest in the world they weigh a ton and produce