You have to name a child after body part/body function

[Mrsknackered]

I think Pharynx and Chyme are really fine names.

Quite like Ileum too.

This is all hypothetical ofcourse!

Glomerulus for a boy.
Cornea for a girl.

Oh this thread has got me cackling thank you OP.
What about : Gullet, uvula, colon (reminds me of colin), marrow

Talus
Dorsum
Navicular
Bursa
Peroneus

Gyrus for a boy

Agree Medulla for a girl

Ok here we go....

Boys:
Artery - Art or Arty for short.
Thorax - Thor for short
Loin
Temple
Willy
Tragus - Gus fot short
Axilla- Axil for short
Hallux- Hal for short
Philtrum- Phil for short

Girls:
Cornea - Nea for short
Pinky - (I know a couple of these already)
Lunula
Cuticle - Cutie for short
Naris
Uvula
Glabella - Bella for short

Loving this game!

Can't believe I forgot Achilles - great name!

Parts of the ear work well for boys:

Malleus
Incus

Clit-OR-is (to rhyme with Delores)
V. Posh !

Girl:
Pinna
Urethra
Trachea

Boy:
Malleus
Pharynx
Sinus
Soul

I know a Pinna!

Loving Soul. Clever. Sinus is totally useable - right?!

Follicle
Verucca
Pelvis (then get life time corrections - it's Pelvis not Elvis)
Refina, shorten to Tina

Oxter

Elbow

Or even Kneea! (Nia) 😊

I actually secretly quite fancy Lumen for a girl

Anvil for a boy?

Lumen could actually work, in its context as unit of light intensity. Quite nice, as a name.

Likewise Candela.

But I digress. Sorry.

Melaena.

Actually came across a 'melaena cafe' once..didn't order anything!

Oh, I like lumen.

Submandibular (Mandi for short) but that is a bit far stretched.

Since you said body part/body function, and the brain is part of the body, I'll say Emotion for a girl, and Nap (also short for Napoleon) for a boy .

There's a footballer called Drinkwater, that's a body function surely.

Regina Phalange all the way.

Also Buster Blood Vessel is already there.

Di ( Gestive System)

And not forgetting the three budding comedians:

Humerus

Aqueous Humour &
Vitreous Humour.

(Channeling Radio 4 here as you can probably tell)

Sperm is quite a go -getting active sort of name for a boy.

Spit
Vom
Reflux
Hernia
Artery
Leg

Allergy
Naevus

I do like Sperm and Soul

Wart, and his sister Blister
Swelling
Sac and his sister Anorexia