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Encyclopedia > List of animals by number of neurons

This is a list of animals by number of neurons in their brain. These numbers are estimations derived by multiplying the density of neurons in a particular animal by the average weight or mass of the animal's brain Phyla Subregnum Parazoa Porifera Subregnum Eumetazoa Placozoa Orthonectida Rhombozoa Radiata (unranked) Ctenophora Cnidaria Bilateria (unranked) Acoelomorpha Myxozoa Superphylum Deuterostomia Chordata Hemichordata Echinodermata Chaetognatha Xenoturbellida Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Nemertea Phoronida Bryozoa Entoprocta... Drawing by Santiago Ramón y Cajal of neurons in the pigeon cerebellum. ... In animals, the brain, or encephalon (Greek for in the head), is the control center of the central nervous system. ...


Overview

Neurons are the cells in the brain which transmit information to and from body parts. In the simplest organisms they act only drive the organism to respond to certain stimuli. In higher organisms, reasoning abilities come into play and we can see animals working collectively to achieve a similar goal. Humans are the only higher animals which are capable of abstraction, most likely as a direct result of the immense number of neurons present. A crab is an example of an organism. ... Reasoning is the act of using reason to derive a conclusion from certain premises. ... Abstraction is the process of reducing the information content of a concept, typically in order to retain only information which is relevant for a particular purpose. ...


Alphabetically

Listed from A-Z

Name Neurons Details
Ant 10,000-100,000[1] Varies per species
C. elegans 302[2]
Honey Bee 850,000[3]
Enlarge
Human 100,000,000,000[4] Adult
Rat 21,000,000[5]

Subfamilies Aenictinae Aenictogitoninae Aneuretinae Apomyrminae Cerapachyinae Dolichoderinae Dorylinae Ecitoninae Formicinae Leptanillinae Leptanilloidinae Myrmeciinae Myrmicinae Nothomyrmeciinae Ponerinae Proceratiinae Pseudomyrmecinae Ants are social insects that belong to the same order as the wasps and bees. ... Image File history File linksMetadata Ant_head_closeup. ... Image File history File linksMetadata Ant_head_closeup. ... Binomial name Caenorhabditis elegans Maupas, 1900 Caenorhabditis elegans (IPA: ) is a free-living nematode (roundworm), about 1 mm in length, which lives in temperate soil environments. ... Image File history File linksMetadata Download high-resolution version (6424x2113, 736 KB) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File linksMetadata Download high-resolution version (6424x2113, 736 KB) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... The honeybee is a colonial insect that is often maintained, fed, and transported by farmers. ... Download high resolution version (1024x768, 142 KB) http://pdphoto. ... Download high resolution version (1024x768, 142 KB) http://pdphoto. ... Trinomial name Homo sapiens sapiens Linnaeus, 1758 Humans, or human beings, are bipedal apes belonging to the mammalian species Homo sapiens (Latin for wise man or knowing man) under the family Hominidae (known as the great apes). ... Image File history File links PPlaquecloseup. ... Image File history File links PPlaquecloseup. ... Species 50 species; see text *Several subfamilies of Muroids include animals called rats. ... Image File history File links Rattus norvegicus, the Brown Rat. ... Image File history File links Rattus norvegicus, the Brown Rat. ...

Numerically

Listed numerically from greatest number of neurons to least number of neurons

Name Neurons Details
Human 100,000,000,000 Adult
Rat 21,000,000
Honey Bee 850,000
Ant 10,000-100,000 Varies per species
C. elegans 302

 
 

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