littor...@gmail.com wrote:
> Op maandag 27 juni 2022 om 00:45:59 UTC+2 schreef Primum Sapienti:
>
>
>>>> And let's not forget you believe nostrils on TOP of the neanderthal nose...
>
>>> :-DDD My little little boy, you're becoming more+more infantile.
>>> The nostrils of the big neandertal nose + prognathism were closed by the upper lip, of course: philtrum!
>
> No answer, only this nonsense:
>
>> Not possible. If those nostrils were on TOP of the nose, how could the
>> upper lip go that far to cover them????
>
> ???
> Are you really that stupid??
> Again, my litle boy:
> If you put your 2nd & 3rd fingertops 1 or 2 cm apart underneath your upper lip, and then try to inhale through your nose, your lip perfectly closes your nostrils.
> Didn't you know??
You have to hold the lip in place? :=}
> The human philtrum (very unlike the monkey's) fits perfectly at the underside of our nose if we had been more prognathous (as H.neand. were):
> IOW, our upper lip in the early- & mid-Pleistocene could easily close our nostrils.
> It's difficult to find another functional explanation for the *human* philtrum in our upper lip: a nostril-closing device, that beautifully fits the columella.
> Okidoki?
How does that work with a mustache? Ever consider that?
https://en.wikipedia.org/wiki/Philtrum
The philtrum (Latin: philtrum from Ancient Greek φίλτρον phíltron, lit.
"love charm"), or medial cleft, is a vertical indentation in the middle area
of the upper lip, common to many mammals, extending in humans from
the nasal septum to the tubercle of the upper lip. Together with a glandular
rhinarium and slit-like nostrils, it is believed to constitute the primitive
condition for at least therian mammals."
In most mammals, the philtrum is a narrow groove that may carry dissolved
odorants from the rhinarium or nose pad to the vomeronasal organ via ducts
inside the mouth.
For humans and most primates, the philtrum survives only as a vestigial
medial depression between the nose and upper lip.
The human philtrum, bordered by ridges, also is known as the infranasal
depression, but has no apparent function. That may be because most higher
primates rely more on vision than on smell.[4] Strepsirrhine primates, such
as lemurs, still retain the philtrum and the rhinarium, unlike monkeys and
apes.
https://advetresearch.com/index.php/AVR/article/view/487/432
The philtrum is a median groove in the upper lip of domestic animals
(Nickelet al.,1979). It usually found in animals that possessed a
rhinarium or a nasalplane (NP) such as carnivores and small ruminants
(Nickelet al., 1979; Evans and Christensen, 1979). The nasal plane is a
wet glabrous skin area, which covers the medial wings of the nostrils
(Nickelet al., 1979). The philtrum in such species is deep and sometimes
extends to the nostrils. On the other hand, it’s shallow or absent in
animals that lack NP, a sequine (Nickelet al., 1979). This anatomical
association is also indicating functional correlations between the
philtrum and the NP (Hillenius and Rehorek, 2005). The philtrum proposed
to drain the odoront molecules that dissolved in the fluid covering the NP
to reach the incisive papillae and then into the nasopalatine ducts
(Wöhrmann-Repenning and Bergmann, 2001). While the nasopalatine ducts or
incisive ducts are the oro-nasal passage of the vomeronasal duct system
(VNO), the philtrum thereby is considered the communication canal between
the NP and the VNO (Hillenius and Rehorek, 2005; Eshrah, 2019).