Love the sound of someone's voice? Thank your larynx, home to your vocal cords.

 

 

Another fascinating fact? The hormone testosterone elongates the vocal cords, which leads to a deeper — and sometimes squeaky — voice during puberty.

Also we've got exciting news! We should have a new larynx + trachea plush available *hopefully* by the end of 2019. Sign up for our newsletter to be the first to know!

Relaxin is a polypeptide hormone released by the corpus luteum (ovary), uterus, placenta and mammary gland. It plays an important role in pregnancy and childbirth, but there's still much mystery around the function of this multi-tasking hormone. Some of what we do know is that relaxin prevents uterine contractions early in pregnancy to avoid premature childbirth. During childbirth, it helps the cervix dilate and the vagina to soften and widen. In blood circulation, levels of relaxin rise after ovulation and lower again if pregnancy does not occur.  

Relaxin has also been discovered in men, although its function is even more unclear in men. Secreted by the prostate, it is found in semen. It is thought to assist the movement of sperm cells in the semen.

Recent findings show that relaxin also decreases tissue fibrosis in the heart, lungs, kidney and liver. It supports the growth of new blood vessels, helps heal wounds and is anti-inflammatory. Even though researchers are still figuring out what exactly it does, relaxin seems to be a pivotal hormone in various systems of the body, aside from just reproductive. Cool!

New hangtag artwork for next batch of lung plush! We are expanding each or our 8-page hangtags into 12-page hangtags to include more info, photos and details about how each organ functions. A tiny and fun book o' biology that comes with each of our organ plushies.
Happy Organ Erasers by I Heart GutsBring your guts back to school with our happy organ erasers! Get rid of mistakes or play with them as a team, these gutsy erasers are sure to bring a smile to your face. Easy way to collect all your major organs! When I was an eraser-obsessed fourth grader, I had a severed finger eraser that was my absolute favorite thing in life. Bringing these erasers to life is truly a dream come true, and we hope you'll like them, too!