Jacobsen 's organ in horses
 
 

       The Horse Forum > The Horse Forum Community > Meet the Community

Jacobsen 's organ in horses

This is a discussion on Jacobsen 's organ in horses within the Meet the Community forums, part of the The Horse Forum Community category
  • Vomeronasal organ n horses
  • Horse vomeronasal organ

 
LinkBack Thread Tools
    11-26-2006, 12:35 PM
  #1
Foal
Jacobsen 's organ in horses


Hi
I am decentdocent. I am working with animals at our zoo.
Would you please tell me where the jacobsen's organs are in a hrse and what their purpose is.

Thank you
Decentdocent
     
Sponsored Links
Advertisement
 
    11-26-2006, 12:59 PM
  #2
Foal
From Wikipedia, the free encyclopedia

A stallion exhibits the flehmen response by curling back his lips.The flehmen response, also called the flehmen position, flehmen reaction, flehming, or flehmening, is a particular type of curling of the lips in ungulates, felids, and many other mammals, which facilitates the transfer of odorant chemicals into the vomeronasal organ. In the flehmen reaction, animals draw back their lips in a manner that makes them appear to be "grimacing". The pose, which is adopted when examining scents left by other animals of the same species, helps expose the vomeronasal organ and draws scent molecules back toward it. This behavior allows animals to detect odorants, for example from urine, of other members of their species. Flehming allows the animals to determine several factors, including the presence or absence of estrus, the physiological state of the animal, and how long ago the animal passed by. This particular response is most recognizable in stallions when smelling the urine of a mare in heat.

The vomeronasal organ, also called Jacobson's organ, is a chemoreceptor organ thought to have to do with the perception of certain pheromones. It is named for its closeness to the vomer and nasal bones, and is particularly developed in animals like cats and horses. The organ is located on the roof of the mouth. In addition to housecats and horses, animals that exhibit the flehmen reaction include buffalo, tigers, tapirs, lions, giraffes, and llamas [1] [2] [3] and [4].

The flehmen response may also be seen in association with pain. [5] In horses it is often associated with low grade abdominal pain.

One human equivalent is the instinctive pulling back of the upper lip when faced with something "disgusting".

Hope this helps............
     
    11-26-2006, 01:35 PM
  #3
Foal
Jacobsons organ

Thank you very much. It helps a great deal.
I know that reptiles likre lizards and snakes have it as well. They use it for smelling.
Thanks and have a great day :)
     

Quick Reply
Please help keep the Horse Forum enjoyable by reporting rude posts.
Message:
Options

Register Now

In order to be able to post messages on the The Horse Forum forums, you must first register.

Already have a Horse Forum account?
Members are allowed only one account per person at the Horse Forum, so if you've made an account here in the past you'll need to continue using that account. Please do not create a new account or you may lose access to the Horse Forum. If you need help recovering your existing account, please Contact Us. We'll be glad to help!

New to the Horse Forum?
Please choose a username you will be satisfied with using for the duration of your membership at the Horse Forum. We do not change members' usernames upon request because that would make it difficult for everyone to keep track of who is who on the forum. For that reason, please do not incorporate your horse's name into your username so that you are not stuck with a username related to a horse you may no longer have some day, or use any other username you may no longer identify with or care for in the future.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Old Thread Warning
This thread is more than 90 days old. When a thread is this old, it is often better to start a new thread rather than post to it. However, If you feel you have something of value to add to this particular thread, you can do so by checking the box below before submitting your post.

Thread Tools



All times are GMT -4. The time now is 07:02 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0