Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The olfactory region of the brain, located in the cerebrum.
from The Century Dictionary.
- noun The olfactory lobe of the brain; the foremost one of the several morphological segments of the encephalon, preceding the prosencephalon. In the lower vertebrates the rhinencephalon is relatively large, and evidently a distinct part of the brain. In the higher it gradually diminishes in size, becoming relatively very small, and apparently a mere outgrowth of the cerebrum. Thus, in man the rhinencephalon is reduced to the so-called pair of olfactory nerves, from their roots in the cerebrum to the olfactory bulbs whence are given off the numerous filaments, the proper olfactory nerves, which pierce the cribriform plate of the ethmoid, and ramify in the nose. The rhinencephalon, like other encephalic segments, is paired or double—that is, consists of right and left halves. It is primitively hollow or has its proper ventricle, which, however, is entirely obliterated in the adults of the higher vertebrates. This hollow is a prolongation of the system of cavities common to the other encephalic segments, and known as the rhinocœle. Also
rhinencephal . See cuts under Petromyzontidæ, Rana, brain (cut 2), and encephalon.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Anat.) The division of the brain in front of the prosencephalon, consisting of the two olfactory lobes from which the olfactory nerves arise.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun anatomy The part of the
brain involved witholfaction .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word rhinencephalon.
Examples
-
HOLISTIC MEDICINE called rhinencephalon and was thought to be concerned with olfaction
Recently Uploaded Slideshows supri1278 2010
-
HOLISTIC MEDICINE called rhinencephalon and was thought to be concerned with olfaction
Recently Uploaded Slideshows guestf91103 2009
-
HOLISTIC MEDICINE called rhinencephalon and was thought to be concerned with olfaction
-
A group of structures within the rhinencephalon, that part of the brain once thought to be devoted to smell, which is associated with various emotions such as anger, fear, sexual arousal, pleasure, and sadness.
Alcohol and The Addictive Brain Kenneth Blum 1991
-
A group of structures within the rhinencephalon, that part of the brain once thought to be devoted to smell, which is associated with various emotions such as anger, fear, sexual arousal, pleasure, and sadness.
Alcohol and The Addictive Brain Kenneth Blum 1991
-
The remaining parts of the rhinencephalon, viz., the septum pellucidum, fornix, and hippocampus, will be described in connection with the lateral ventricle.
-
The rhinencephalon comprises the olfactory lobe, the uncus, the subcallosal and supracallosal gyri, the fascia dentata hippocampi, the septum pellucidum, the fornix, and the hippocampus.
-
The rhinencephalon, associated with the sense of smell, is the oldest part of the telencephalon, and forms almost the whole of the hemisphere in some of the lower animals, e. g., fishes, amphibians, and reptiles.
-
The olfactory center in the cortex is generally associated with the rhinencephalon (page 826).
-
The auditory area occupies the middle third of the superior temporal gyrus and the adjacent gyri in the lateral fissure; the visual area, the calcarine fissure and cuneus; the olfactory area, the rhinencephalon.
chained_bear commented on the word rhinencephalon
"In fact, the seat of many of those emotional centers—the limbic system—was once called the 'rhinencephalon,' literally 'nose-brain' or 'smell-brain.' A 2003 study found that strong smells triggered activity in both the amygdala and the ventral insula."
—Steven Johnson, The Ghost Map (New York: Penguin, 2006), 128
October 2, 2008
reesetee commented on the word rhinencephalon
I need to find a way to call someone a nose-brain today.
October 2, 2008