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Encyclopedia > Piriform cortex

In anatomy of animals, the piriform cortex, or pyriform cortex is a region in the brain. The piriform cortex is part of the rhinencephalon situated in the telencephalon. Anatomical drawing of the human muscles from the Encyclopédie. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (flatworms, echinoderms, etc. ... Comparative brain sizes In the anatomy of animals, the brain, or encephalon (Greek for in the head), is the higher, supervisory center of the nervous system. ... In anatomy of animals, the rhinencephalon is a part of the brain involved with olfaction. ... The telencephalon (te-len-seff-a-lon) is the technical name for a large region within the brain which is attributed many functions, which some groups would class as unique features which make humans stand out from other species. ...


The function of the piriform cortex relates to olfaction, which is the perception of smells. Sometimes called the olfactory cortex, olfactory lobe or paleopallium, piriform cortical regions are present in the brains of amphibians, reptiles and mammals. Olfaction, the sense of odor (smell), is the detection of chemicals dissolved in air (or, by animals that breathe water, in water). ... Odor receptors on the antennae of a Luna moth An odor (American English) or odour (Commonwealth English) is the object of perception of the sense of olfaction. ... For other uses, see Amphibian (disambiguation). ... Orders  Crocodilia - Crocodilians  Rhynchocephalia - Tuataras  Squamata   Suborder Sauria- Lizards   Suborder Serpentes - Snakes   Suborder Amphisbaenia - Worm lizards Testudines - Turtles Superorder Dinosauria  Saurischia  Ornithischia Reptiles are tetrapods, and also are amniotes, animals whose embryos are surrounded by an amniotic membrane. ... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Eutheria (includes extinct ancestors)/Placentalia (excludes extinct ancestors) Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes...


The piriform cortex is among three areas that emerge in the telencephalon of amphibians, situated caudally to a dorsal area, which is caudal to a hippocampal area. Farther along the phylogenic timeline, the telencephalic bulb of reptiles as viewed in a cross section of the transverse plane extends with the archipallial hippocampus folding toward the midline and down as the dorsal area begins to form a recognizable cortex. The telencephalon (te-len-seff-a-lon) is the technical name for a large region within the brain which is attributed many functions, which some groups would class as unique features which make humans stand out from other species. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... In biology, Phylogenetics (Greek: phylon = race and genetic = birth) is the taxonomical classification of organisms based on how closely they are related in terms of evolutionary differences. ... In anatomy of animals, the archipallium the oldest region of the brains pallium. ...


As mammallian cerebrums developed, volume of the dorsal cortex increased in slightly greater proportion, as compared proportionally with increased overall brain volume, until it enveloped the hippocampal regions. Recognized as neopallium or neocortex, enlarged dorsal areas envelop the paleopallial piriform cortex in humans and Old World monkeys. The location of the hippocampus in the human brain. ... In the anatomy of animals, the neopallium or neocortex is a part of the telencephalon in the brain. ... In the anatomy of animals, the neopallium or neocortex is a part of the telencephalon in the brain. ... In anatomy of animals, the paleopallium is a region within the telencephalon in brain. ... Binomial name Homo sapiens Linnaeus, 1758 Subspecies Homo sapiens idaltu(extinct) Homo sapiens sapiens Homo (genus). ... Subfamilies Cercopithecinae - 11 genera Colobinae - 9 genera The Old World monkeys or Cercopithecidae are a group of primates, falling in the superfamily Cercopithecoidea in the clade Catarrhini. ...


Among taxonomic groupings of mammals, the piriform cortex and the olfactory bulb become proportionally smaller in the brains of phylogenically younger species. The piriform cortex occupies a greater proportion of the overall brain and of the telencephalic brains of insectivores than in primates. The piriform cortex continues to occupy a consistent albeit small and declining proportion of the increasingly large telencephalon in the most recent primate species while the volume of the olfactory bulb becomes less in proportion. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... The olfactory bulb (1) is relatively large in the rabbit brain The olfactory bulb is a part of the brain that is a distinct outgrowth from the forebrain of mammals. ... In biology, Phylogenetics (Greek: phylon = race and genetic = birth) is the taxonomical classification of organisms based on how closely they are related in terms of evolutionary differences. ... Any organism with a diet that consists chiefly of insects and similar small creatures is an insectivore. ... Families 15, See classification A primate is any member of the biological order Primates, the group that contains all lemurs, monkeys, apes, and humans. ... The telencephalon (te-len-seff-a-lon) is the technical name for a large region within the brain which is attributed many functions, which some groups would class as unique features which make humans stand out from other species. ...


External links

  • Interactive High Resolution Brain Atlases and Brain Maps


See also:Regions in the human brain Human brain image constructed from MRI data // Brain (neural tube) Brainstem (rhombencephalon),(mesencephalon) Rhombencephalon (hindbrain) Metencephalon pons fourth ventricle cerebellum cerebellar vermis cerebellar hemispheres anterior lobe posterior lobe flocculonodular lobe cerebellar nuclei fastigial nucleus globose nucleus emboliform nucleus dentate nucleus Myelencephalon medulla oblongata medullary pyramids Mesencephalon (midbrain) tectum inferior colliculi...



Sensory system - Olfactory system

Olfactory bulb - Olfactory nerve - Olfactory epithelium - Glomeruli - Olfactory mucosa - Olfactory receptor neurons - Mitral cells - Piriform cortex (See also sense) A sensory system is a part of the nervous system that consists of sensory receptors, neural pathways, and those parts of the brain responsible for processing the information. ... The olfactory system is the sensory system used for olfaction. ... The olfactory bulb (1) is relatively large in the rabbit brain The olfactory bulb is a part of the brain that is a distinct outgrowth from the forebrain of mammals. ... The olfactory nerve is the first of twelve cranial nerves. ... The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. ... The glomerulus (plural glomeruli) in olfaction is structure in the olfactory bulb. ... The olfactory mucosa is an organ made up of the olfactory epithelium and the mucosa, or mucus secreting glands, behind the epithelium. ... An olfactory receptor neuron, also called an olfactory sensory neuron, is the primary transduction cell for olfaction in the olfactory system. ... Mitral cells are neurons that make up a part of the olfactory system. ...


  Results from FactBites:
 
Piriform cortex - Wikipedia, the free encyclopedia (307 words)
In anatomy of animals, the piriform cortex, or pyriform cortex is a region in the brain.
The piriform cortex is among three areas that emerge in the telencephalon of amphibians, situated caudally to a dorsal area, which is caudal to a hippocampal area.
The piriform cortex continues to occupy a consistent albeit small and declining proportion of the increasingly large telencephalon in the most recent primate species while the volume of the olfactory bulb becomes less in proportion.
  More results at FactBites »

 
 

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