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August 17, 2012
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(Contains: nudity)


Usual disclaimer: These are my opinions! There is no real physical centaur to compare against, so the best I can do is make an educated guess. If you prefer a design other than this, that's fine, but this is what I'm going to keep drawing. If you disagree, fine, but do so politely, and above all, please don't ask I draw things your way. I know how I think it'd work, and that ain't gonna change.

So before we can talk about, say, the cardiovascular system, we have to talk about basic terminology for the parts of the body. These are the ones I use, derived from a mixture of human terms and horse terms, and a few new ones:

Major regions:
  • Head: Everything above the neck.
  • Torso: Everything from the top of the neck to the top of the hips.
  • Barrel: Everything from the hips to the start of the hindquarters, but excluding the forelegs.
  • Buttocks: (Also "butt" in U.S. English, and "bum" in other English flavors.) Everything from the end of the barrel to the end of the body, excluding the hind legs and tail.
  • Arms: The two ancillary protrusions of the upper body, from fingertip to shoulder.
  • Forelegs: The two anterior supporting protrusions of the lower body, from the ground to the barrel.
  • Hind Legs: The two posterior supporting protrusions of the lower body, from the ground to the buttocks.

Body Sections:
  • Head/Face: Same as on a human.
  • Neck: Same as on a human.
  • Upper chest: This refers to the anterior part of the humanoid torso from the top of the upper ribcage to the bottom of the upper ribcage.
  • Blend: This refers to the soft anterior part of the body between the upper ribcage and lower ribcage.
  • Lower chest: This refers to the ventral part of the body from the anterior end of the lower ribcage to the posterior end of the lower ribcage.
  • Loins: This refers to the soft anterior ventral part of the body past the lower ribcage, excluding the hind legs and tail. Similar terminology is used on a horse, but is more of a cylinder on a horse, where I restrict it to just the "under" part.
  • Hindquarters: This refers to the portion of the body directly supported by the spine, but anterior to the lower ribcage.
  • Saddle: This refers to the dorsal side of the body from the anterior of the lower ribcage to the posterior of the lower ribcage.
  • Lower back: The posterior portion of the body between the upper ribcage and the lower ribcage. Mostly the same as on a human.
  • Upper back: Same as on a human.

Humanoid parts:

These are mostly as you'd expect. Head, arms, chest, there's not really that much to talk about.

Adult females do have breasts and nipples; but males occasionally will not have nipples. (This is true in some other species, so it's not a huge stretch that vestigial nipples would disappear.)

The Blend:

I read an article many years ago arguing various terms for this region of the body, and the word "blend" was the one I liked best, and I've used it ever since. The blend includes what is colloquially called the "belly" or "stomach," as well as the part of the equine body above the start of the equine ribcage.

There is a bellybutton, which is mostly vestigial in my designs, since the stomach is much farther down the body.

The "hips" are not true hips as on a human; rather, they are hints of the uppermost equine shoulder bones, combined with a transition between muscles, and merely look a bit like hips. They move a little with the forelegs during walking or running.

The blend can be classified as "smooth" or "sharp" depending on how the fur grows there; if there is a long transition from bare skin to furred body, it is "smooth," and if there is an abrupt transition at the hips, it is "sharp."

The Barrel:

The saddle is named for the object which would sit there on a horse, and allows the word "back" to be used to refer to the humanoid part. Suffice it to say that whether you can actually put a saddle there depends on the centaur you're talking to.

The withers refers to the rounded lump at the base of the lower back, formed by muscle and fat and the ends of the equine shoulder blades. It may look a little like a hint of the top of a pair of human buttocks, but otherwise has nothing in common.

Most of the remaining terms are fairly normal equine terminology except for the use of the word "fur." Horses have hair on their hides, as do centaurs; but to allow the word "hair" to refer to the long strands growing from the head or tail, the short hair on the barrel and legs I prefer to call "fur."

The Legs:

To avoid confusion, arm-like names such as "forearm" are restricted to the humanoid arms. Thus the forelegs especially get a bunch of replacement names.

As there is no reasonable substitute that I can come up with, "shoulder" is used both to refer to the humanoid shoulder and to the equine shoulder.

My centaurs will occasionally use a colloquial term when talking about their legs. "Quarter" is occasionally used instead of "Upper foreleg" (a "quarter" is the joint in the hind leg equivalent to a human knee). "Knee" may become "foreknee" or "hind knee" depending on which legs they're talking about. "Cannon" may be used for the lower foreleg (on a horse, it is usually only for the lower hind leg), and "foreankle" is frequently substituted for "fetlock," the correct term, and "hind ankle" may be used to describe what is correctly just the "ankle." Last, but not least, "hind knee" may be used instead of hock, which is actually quite wrong since it has far more in common with a human ankle than with a knee, but it is likely used for parity with the similarly-positioned joint in the forelegs.

Everybody got that?

Other Details:

The bolder blue words here show words that my centaurs would preferably use, right or wrong. The lighter blue words may appear, but are less preferred or considered archaic.

Comparison to a horse and human:

In general, the words match up pretty well. "Blend" is new, and "loins" is a little different, and the forelegs need slightly altered names to distinguish them from the arms, but as a whole, if Lucy here said that she'd gotten a splinter in one of her coronets, a horse rancher would know exactly what she was talking about.

____________________________________________________


So that's basic terminology of the centaur body. Next up, we'll talk about, uh, I dunno, maybe the skeleton or something.
Add a Comment:
 
:iconjdailey1991:
Jdailey1991 Featured By Owner Jan 15, 2014
If the udder is where the centaur mare is going to suckle her foal, then what's the point with the human breasts?
Reply
:icond-a-eackors:
d-a-eackors Featured By Owner Mar 1, 2013
'Saddle?!'
Never heard of that!
In my novel with centaurs and other mythological creatures, I refer to the equine back as the 'midriff'.
Reply
:iconcentaur71:
Centaur71 Featured By Owner Jan 10, 2013
Are you a Centaur too? this depiction is spot-on of our Race! KUDOS!
Reply
:iconiksbob:
iksbob Featured By Owner Aug 25, 2012
Functionally speaking, the "Hock" has more in common with the human ankle than the joint labeled as such. Most quadruped mammals, including horses (and thus centaurs) have long "feet", most often putting weight on what we could consider the ball of the foot. It's like standing on your tippy-toes all the time. Horses differ in that their toes have fused (or maybe only have one toe?) and have one collective toenail (the hoof) which they stand on.
As such, the four joints going from ground to back should be something along the lines of [first toe knuckle] (labeled Ankle above), [ankle] (labeled Hock above), [knee] (slightly above and forward of the Quarter arrowhead above), and [hip] (in the vicinity of, or slightly above the Stifle arrowhead).
Similarly on the fore legs, [knuckle] (labeled Foreankle above), [wrist] (labeled Knee above), [elbow] (the step on the rear of the leg just below the bottom line of the barrel), and [shoulder] (somewhere around her fingertips).
Just my opinion, based on a comparison of human and equine skeletal structure.
Obviously, the terms I'm throwing around don't help with the overall unique-terminology theme going on here (nice work btw), but I thought a little critique might be in order.
Reply
:iconphantom-inker:
phantom-inker Featured By Owner Aug 25, 2012  Hobbyist Digital Artist
In a subsequent posting, I'll be showing the actual bone structure and comparing it to human arms and legs, which should help resolve some of the ambiguity for anybody who doesn't quite get it.
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:iconmuddworg:
muddworg Featured By Owner Aug 22, 2012
love centauress
Reply
:iconarbarano:
Arbarano Featured By Owner Aug 21, 2012
Why does she have udder AND breasts?

And I hope everyone is aware the the «knee» of the legs corresponds to the our wrist, and the foreankle, to the hand-finger joint, the cannon being the palm (the metacarpus).
Reply
:iconphantom-inker:
phantom-inker Featured By Owner Aug 22, 2012  Hobbyist Digital Artist
She has both an udder and breasts because, well, it works. I originally didn't draw udders, but I started drawing udders on centauresses about four or five years ago when I was inspired by another drawing that had them. So I've rationalized it by thinking that the breasts are used when the baby is very young, young enough to cradle, and when it is old enough to walk on its own, it can then use the udder instead, which gives the mother maximum flexibility in deciding how she will nurse.

The fact that the forelegs work like arms and hands is the main reason I drew Centaur Anatomy 103. A picture really is worth a thousand words :)
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:iconvulpix1985:
vulpix1985 Featured By Owner Aug 20, 2012
could you do one of her organs and maybe her skeleton sry i know ghoulish but i really curious about whether or not she has two sets of organs,and how the equine anatomy is connected to the human part
Reply
:iconphantom-inker:
phantom-inker Featured By Owner Aug 22, 2012  Hobbyist Digital Artist
That'll be coming, as soon as I can get time to draw it.
Reply
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