home
RSS
Why our noses are different shapes
Left: The nasal bone structure of a person of African origin. Right: Nose of a person of European origin.
March 20th, 2013
12:06 PM ET

Why our noses are different shapes

There are pouches on each side of the human nose below the eyes that are called maxillary sinuses. They're involved in sinus infections, so you may already have a bias against them.

But Nathan Holton, a postdoctoral research fellow in the department of orthodontics at the University of Iowa, wanted to find out why there's such variation in these structures, and how they are affected by variation in the nasal cavity. A study on the subject is published in the journal The Anatomical Record.

Holton and colleagues took computed tomography scans of 40 people. About half of them were European-Americans, and the other half were African-Americans or native South Africans.

They found that the bigger the volume of the nasal cavity, the bigger the maxillary sinuses, in both populations. This is also associated with the overall face size, the researchers said, and suggests that the maxillary sinuses play a role in allowing the nose shape to vary. It appears that the sinuses make room for the nose.

But when the face size is about the same, maxillary sinuses tended to be 36% larger in people of European ancestry than of African ancestry because Europeans tend to have narrower nose shapes.

The various shapes of noses appear to be tied to adaptations to climate, Holton said. The nose must properly heat and humidify the air that you breathe. In a cold climate, it's advantageous to have a narrower nose. That's so that when a person inhales, more air comes into contact with the mucosal surface of nose, which provides moisture. The narrow nose maximizes the surface area.

"The fact that we have sinuses seems to allow for this accommodation of variation in nasal shape, which seems to be important, in evolutionary terms, with regard to climatic adaptation," Holton said.

The maxillary sinuses probably do not serve an important purpose in terms of nasal respiratory function, he said.


soundoff (1,756 Responses)
  1. Sprinter Repair Shop Near Me

    https://ww17.freeshoutbox.net/__media__/js/netsoltrademark.php?d=http://ocrvcenter.com/rv-tire-repair-near-me

    June 15, 2021 at 23:16 | Report abuse | Reply
  2. RV Repair Shops Near Me

    http://xiuang.tw/debug/frm-s/https://ocrvcenter.com/rv-repair-shop-south-gate-california

    June 16, 2021 at 00:16 | Report abuse | Reply
  3. RV Repair Garden Grove

    Hello there! I could have sworn Iíve been to your blog before but after looking at many of the articles I realized itís new to me. Nonetheless, Iím definitely pleased I found it and Iíll be book-marking it and checking back regularly!

    http://cssdrive.com/?URL=www.ocrvcenter.com/rv-repair-shop-palm-springs-california

    June 16, 2021 at 00:19 | Report abuse | Reply
  4. Camper Repair Shop Near Me

    http://www.fireflyvodka.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-repair-shop-studio-city-california/

    June 16, 2021 at 00:39 | Report abuse | Reply
  5. RV Repair Seal Beach

    http://yellowpages.reviewatlas.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/tank-truck-collision-repair-shop-near-me

    June 16, 2021 at 01:05 | Report abuse | Reply
  6. htv2 trực tiếp

    Xoilac Tv Trực Tiếp đá Bóngtrực tiếp bóng đá vtv6Xem bóng đá trực tuyến Trực tiếp Odd BK vs Sarpsborg, 20h ngày 24/5, giải VĐQG Na Uy. Xem lịch vạc sóng trực tiếp đá bóng EURO hôm nay được Webthethao update chủ yếu xác nhất.

    https://virandoamor.com/detail/lich-phat-song-fox-movies-hom-nay-106858.html

    June 16, 2021 at 02:29 | Report abuse | Reply
  7. RV Repair Nearby

    I couldnít refrain from commenting. Well written!

    http://foro.infojardin.com/proxy.php?link=http://www.ocrvcenter.com/rv-maintenance-near-me-2/

    June 16, 2021 at 02:33 | Report abuse | Reply
  8. RV Repair Huntington Beach

    http://www.london.umb.edu/?URL=http://www.masteryourbusinessnow.actoblog.com/2520297/what-does-rv-repair-shop-mean

    June 16, 2021 at 02:47 | Report abuse | Reply
  9. Sprinter Repair Costa Mesa

    https://www.info-dvd.ru/support/ezine/confirm-html.html?smartemail=sam-christian@https://ocrvcenter.com/rv-repair-shop-manhattan-beach-california

    June 16, 2021 at 06:57 | Report abuse | Reply
  10. RV Repair Shops Nearby

    Greetings, I do think your site may be having web browser compatibility issues. Whenever I look at your website in Safari, it looks fine but when opening in I.E., it's got some overlapping issues. I simply wanted to provide you with a quick heads up! Besides that, great site!

    https://www.google.tk/url?q=https://ocregister.com

    June 16, 2021 at 07:34 | Report abuse | Reply
  11. RV Repair California

    This is the perfect site for everyone who really wants to find out about this topic. You understand so much its almost hard to argue with you (not that I actually will need toÖHaHa). You definitely put a fresh spin on a topic which has been discussed for a long time. Wonderful stuff, just great!

    http://www.historyhub.history.gov/external-link.jspa?url=http://www.businessvirtualreality.dgbloggers.com/2312312/the-rv-repair-shop-diaries

    June 16, 2021 at 08:34 | Report abuse | Reply
  12. Sprinter Repair Orange County

    The very next time I read a blog, Hopefully it won't fail me just as much as this particular one. After all, Yes, it was my choice to read through, but I genuinely thought you would have something helpful to say. All I hear is a bunch of complaining about something that you could fix if you weren't too busy seeking attention.

    https://directory.pasadenanow.com/__media__/js/netsoltrademark.php?d=http://ocrvcenter.com/rv-repair-shop-west-covina-california

    June 16, 2021 at 09:03 | Report abuse | Reply
  13. RV Repair Shops Nearby

    Can I just say what a comfort to discover an individual who really understands what they're discussing on the net. You certainly understand how to bring a problem to light and make it important. More and more people ought to check this out and understand this side of the story. I was surprised that you're not more popular since you certainly have the gift.

    http://www.treasury.gov/cgi-bin/redirect.cgi/?http://www.ingenieurleistungenreiter.de/index.php?option=com_phocaguestbook&view=phocaguestbook&id=1&Itemid=4&t=60&limitstart=66200

    June 16, 2021 at 11:23 | Report abuse | Reply
  14. cabin rentals near me

    You need to take part in a contest for one of the most useful sites on the web. I'm going to recommend this website!

    http://brightstar.org/__media__/js/netsoltrademark.php?d=http://ocrvcenter.com

    June 16, 2021 at 15:35 | Report abuse | Reply
  15. usps near me

    Wonderful post! We will be linking to this great article on our site. Keep up the good writing.

    https://www.nhj.gardentutoronline.org/__media__/js/netsoltrademark.php?d=https://www.ocrvcenter.com

    June 16, 2021 at 16:35 | Report abuse | Reply
  16. marshalls near me

    https://pub.accesstrade.vn/deep_link/4413519309341732700?url=http://www.ocrvcenter.com/

    June 16, 2021 at 16:40 | Report abuse | Reply
  17. handyman near me

    After I initially left a comment I appear to have clicked on the -Notify me when new comments are added- checkbox and now each time a comment is added I recieve 4 emails with the same comment. Is there a means you can remove me from that service? Kudos!

    https://www.rivera.co.nz/__media__/js/netsoltrademark.php?d=https://ocrvcenter.com/

    June 16, 2021 at 18:11 | Report abuse | Reply
  18. fox movies vietnam

    Trực Tiếp Soccer Việt Nam Vs Lebanon. Xem Truc Tiep Bong Da. Futsal Việt Namxem tivi k+Đây có lẽ là trường hợp “của đi thay người" khá như mong muốn đối với Ben McLemore. Thiếu chút nữa tay ném của Los Angeles Lakers đã được thể gặp hiểm họa nghiêm trọng. Cập nhật kết trái trận Việt Nam vs Lebanon thuộc play-off vòng loại Futsal World Cup 2021.

    https://virandoamor.com/detail/xoivotv-96054.html

    June 16, 2021 at 18:17 | Report abuse | Reply
  19. tattoo shops near me

    https://www.jewelmarkusa.com/__media__/js/netsoltrademark.php?d=www.ocrvcenter.com/

    June 16, 2021 at 18:56 | Report abuse | Reply
  20. outlet mall near me

    https://www.scgov.org/__media__/js/netsoltrademark.php?d=www.ocrvcenter.com/

    June 16, 2021 at 19:15 | Report abuse | Reply
  21. printing near me

    There's definately a lot to learn about this topic. I love all of the points you made.

    http://delikitchen.com/__media__/js/netsoltrademark.php?d=http://ocrvcenter.com/

    June 16, 2021 at 19:28 | Report abuse | Reply
  22. animal hospital near me

    Right here is the right web site for anybody who wishes to understand this topic. You realize so much its almost hard to argue with you (not that I personally will need toÖHaHa). You definitely put a brand new spin on a subject that's been written about for decades. Wonderful stuff, just wonderful!

    https://schornsteinfeger-duesseldorf.de/redirect.php?url=http://www.ocrvcenter.com

    June 16, 2021 at 20:08 | Report abuse | Reply
  23. rest area near me

    Aw, this was an incredibly nice post. Taking a few minutes and actual effort to create a top notch articleÖ but what can I sayÖ I hesitate a lot and never seem to get nearly anything done.

    https://nanos.jp/jmp?url=ocrvcenter.com

    June 16, 2021 at 20:10 | Report abuse | Reply
  24. att near me

    Way cool! Some extremely valid points! I appreciate you writing this write-up and also the rest of the website is extremely good.

    http://www.cadillacgage.com/__media__/js/netsoltrademark.php?d=www.ocrvcenter.com/

    June 16, 2021 at 20:34 | Report abuse | Reply
  25. furniture store near me

    http://eastland-shoe.net/__media__/js/netsoltrademark.php?d=http://www.ocrvcenter.com/

    June 16, 2021 at 20:35 | Report abuse | Reply
  26. RV Repair Nearby

    http://www.atari.org/links/frameit.cgi?ID=238&url=http://www.ocrvcenter.com/rv-upgrades-near-me-2

    June 16, 2021 at 23:53 | Report abuse | Reply
  27. freelance wordpress developer kuala lumpur

    Hello my friend! I wish to say that this post is awesome, great written and
    come with almost all significant infos. I would like to look more posts
    like this .

    June 16, 2021 at 23:54 | Report abuse | Reply
  28. Camper Repair Places Near Me

    https://azlawhelp.org/externalsite.cfm?url=//http://www.ocrvcenter.com/motorhome-service-near-me/

    June 17, 2021 at 00:53 | Report abuse | Reply
  29. Sprinter Repair Shop Near Me

    Can I simply say what a relief to find someone who actually knows what they're discussing on the internet. You certainly realize how to bring an issue to light and make it important. More people ought to look at this and understand this side of your story. I can't believe you are not more popular given that you most certainly possess the gift.

    http://sc.sie.gov.hk/TuniS/ocrvcenter.com/rv-repair-shop-west-hills-california

    June 17, 2021 at 02:27 | Report abuse | Reply
  30. kbchn

    Link Xem Trực Tiếp đá Bóng Futsal Việt Nam Vs Lebanon Vòng Chủng Loại World CupxoivoĐây có lẽ là trường hợp “của đi thay cho nhân viên" khá như ý đối cùng với Ben McLemore. Thiếu chút nữa tay ném của Los Angeles Lakers đã được thể gặp gỡ hiểm họa nguy hiểm. Cập nhật kết trái trận Việt Nam vs Lebanon nằm trong play-off vòng loại Futsal World Cup 2021.

    https://murraystivoli.com/detail/tt-vtv3-95668.html

    June 17, 2021 at 02:31 | Report abuse | Reply
  31. Sprinter Repair Near Me

    http://koloboklinks.com/site?url=https://ocrvcenter.com/motorhome-plumbing-repair-near-me/

    June 17, 2021 at 03:10 | Report abuse | Reply
  32. RV Repairs Nearby

    Oh my goodness! Amazing article dude! Thank you, However I am having troubles with your RSS. I donít know the reason why I can't join it. Is there anybody getting identical RSS problems? Anyone that knows the solution can you kindly respond? Thanks!!

    http://en.turismovenezia.it/index.php?id=0&lang=de&referer=https://www.ocrvcenter.com/rv-repair-shop-national-city-california/

    June 17, 2021 at 03:31 | Report abuse | Reply
  33. RV Repair Santa Ana

    Right here is the right website for anybody who wishes to understand this topic. You know a whole lot its almost tough to argue with you (not that I personally will need toÖHaHa). You definitely put a fresh spin on a subject that has been written about for years. Great stuff, just great!

    http://pharmnet.com.cn/dir/go.cgi?url=http://www.ocrvcenter.com/rv-repair-shop-fullerton-california

    June 17, 2021 at 03:44 | Report abuse | Reply
  34. Sprinter Repair Near Me

    You are so cool! I do not believe I have read anything like this before. So good to find someone with some original thoughts on this topic. Seriously.. thank you for starting this up. This website is something that is required on the internet, someone with a bit of originality!

    http://www.ijbssnet.com/view.php?u=https://www.ocrvcenter.com/rv-repair-shop-riverside-california/

    June 17, 2021 at 04:46 | Report abuse | Reply
  35. diners near me

    https://www.winplc7.com/download.php?Link=http://www.ocrvcenter.com

    June 17, 2021 at 04:49 | Report abuse | Reply
  36. link acestream k+1

    Kết Quả Futsal Việt Nam Vs Lebanonthvl1 trực tiếp hôm nayTheo thể thức thi đấu, đội thắng ở cặp đấu này sẽ giành tấm vé đến Lithuania trong ngày hội bóng đá lớn nhất thế giới đến futsal. Tuyển futsal Việt Nam bước vào trận play-off lượt đi tranh vé dự play-off World Cup 2021 với sự tự tin. Tuy vậy, HLV Phạm Minh Giang bày tỏ, toàn đội ko ngán Lebanon tuy vậy sẽ tìm cách để khắc chế sức mạnh của đối thủ bởi bên trên băng ghế huấn luyện là nhà cầm quân Ramiro Lopez, người từng dẫn dắt futsal Tây Ban Nha.|Dựa vào lịch tranh tài, quý khách có thể sắp xếp làm việc

    https://rucyprus.net/detail/90ptv-gapo-106099.html

    June 17, 2021 at 04:58 | Report abuse | Reply
  37. theaters near me

    Hello, I do think your web site might be having browser compatibility issues. Whenever I look at your website in Safari, it looks fine however when opening in I.E., it's got some overlapping issues. I merely wanted to provide you with a quick heads up! Other than that, excellent blog!

    http://www.elahmad.com/url.php?url=ocrvcenter.com/

    June 17, 2021 at 05:13 | Report abuse | Reply
  38. RV Repair Seal Beach

    I blog often and I genuinely thank you for your content. Your article has really peaked my interest. I'm going to take a note of your blog and keep checking for new information about once per week. I opted in for your Feed as well.

    https://girisimhaber.com/redirect.aspx?url=ocrvcenter.com/rv-repair-shop-duarte-california/

    June 17, 2021 at 07:49 | Report abuse | Reply
  39. RV Repair Shop Near My Location

    I must thank you for the efforts you have put in penning this blog. I'm hoping to check out the same high-grade blog posts by you in the future as well. In truth, your creative writing abilities has inspired me to get my very own site now 😉

    https://menedzserpraxis.hu/sharing/?menu=email&url=http://www.ocrvcenter.com/rv-repair-shop-grand-terrace-california/

    June 17, 2021 at 08:01 | Report abuse | Reply
  40. RV Repair Garden Grove

    I need to to thank you for this excellent read!! I absolutely enjoyed every bit of it. I have got you book-marked to check out new things you postÖ

    http://delawarecpf.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-repair-shop-national-city-california

    June 17, 2021 at 08:12 | Report abuse | Reply
  41. sukienfo4

    Link Xem Trực Tiếp Bóng Đá Futsal Việt Nam Vs Lebanon Vòng Loại World CupvaoroitvXem bóng đá trực tuyến Trực tiếp Odd BK vs Sarpsborg, 20h ngày 24/5, giải VĐQG Na Uy. Xem lịch phát sóng thẳng soccer EURO hôm nay được Webthethao update chủ yếu xác nhất.

    https://murraystivoli.com/detail/truc-tiep-bong-da-u23-hom-nay-vtv6-24633.html

    June 17, 2021 at 08:13 | Report abuse | Reply
  42. lichthidaubong dahomnay

    Xem Thẳng Bóng Đávtc14 onlineTheo thể thức thi đấu, đội thắng ở cặp đấu này sẽ giành tấm vé đến Lithuania trong ngày hội bóng đá lớn nhất thế giới mang đến futsal. Tuyển futsal Việt Nam bước vào trận play-off lượt đi tranh vé dự play-off World Cup 2021 với sự tự tin. Tuy vậy, HLV Phạm Minh Giang bày tỏ, toàn đội không ngán Lebanon tuy vậy sẽ tìm cách để khắc chế sức mạnh của đối thủ bởi bên trên băng ghế huấn luyện là nhà cầm quân Ramiro Lopez, người từng dẫn dắt futsal Tây Ban Nha.|Dựa vào lịch thi đấu, quý khách hoàn toàn có thể sắp xếp làm việc

    https://virandoamor.com/detail/tinh-bong-da-24h-42541.html

    June 17, 2021 at 10:06 | Report abuse | Reply
  43. food near me open

    https://www.e-tsuyama.com/cgi-bin/jump.cgi?jumpto=http://ocrvcenter.com/3aqbN3t

    June 17, 2021 at 11:12 | Report abuse | Reply
  44. RV Repair Orange County California

    Howdy! I could have sworn Iíve visited your blog before but after looking at a few of the posts I realized itís new to me. Regardless, Iím definitely pleased I found it and Iíll be book-marking it and checking back regularly!

    http://www.triathlon.org/?URL=https://www.ocrvcenter.com/rv-repair-shop-tustin-california/

    June 17, 2021 at 11:26 | Report abuse | Reply
  45. RV Repair Near My Location

    http://localbusiness.houmatoday.com/__media__/js/netsoltrademark.php?d=https://www.ocrvcenter.com/nationwide-rv-collision-repair-shop-near-me

    June 17, 2021 at 12:28 | Report abuse | Reply
  46. hertz near me

    Pretty! This was an incredibly wonderful article. Thanks for supplying these details.

    http://www.sports-ranking.com/search/rank.cgi?mode=link&id=7&url=http://www.nearmyspot.com

    June 17, 2021 at 13:33 | Report abuse | Reply
  47. tattoo shops near me

    https://advtest.exibart.com/adv/adv.php?id_banner=7201&link=https://reviewnearme.com

    June 17, 2021 at 14:31 | Report abuse | Reply
  48. advance auto near me

    Good blog you've got here.. Itís difficult to find excellent writing like yours nowadays. I really appreciate people like you! Take care!!

    http://lonestaradvisors.com/__media__/js/netsoltrademark.php?d=www.bjsnearme.com/

    June 17, 2021 at 14:35 | Report abuse | Reply
  49. rest area near me

    Howdy! This article couldnít be written any better! Going through this article reminds me of my previous roommate! He continually kept talking about this. I am going to forward this article to him. Pretty sure he will have a good read. Many thanks for sharing!

    http://waypaver.com/__media__/js/netsoltrademark.php?d=nearmyspot.com/

    June 17, 2021 at 15:06 | Report abuse | Reply
  50. tanning near me

    http://cibilich.com/__media__/js/netsoltrademark.php?d=www.wholesalenearme.com

    June 17, 2021 at 15:12 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Leave a Reply to tattoo shops near me


 

CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

Advertisement
About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.