Central nervous systemThe central nervous system (CNS) is the part of the nervous system consisting primarily of the brain, and the spinal cord. The retina is also technically part of the CNS. The CNS is named so because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts.
Contralateral brainThe contralateral organization of the forebrain (Latin: contra‚ against; latus‚ side; lateral‚ sided) is the property that the hemispheres of the cerebrum and the thalamus represent mainly the contralateral side of the body. Consequently, the left side of the forebrain mostly represents the right side of the body, and the right side of the brain primarily represents the left side of the body.
Peripheral nervous systemThe peripheral nervous system (PNS) is one of two components that make up the nervous system of bilateral animals, with the other part being the central nervous system (CNS). The PNS consists of nerves and ganglia, which lie outside the brain and the spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain and spinal cord and the rest of the body.
Axial twist theoryThe axial twist theory ( axial twist hypothesis) is a proposed scientific theory to explain the optic chiasm and contralateral brain of vertebrates. It suggests that the rostral part of the head is "turned around" with respect to the rest of the body. This end-part would consist of the face (eyes, nose, and mouth) as well as part of the brain (cerebrum and thalamus).
Chi (letter)HistoryArchaic local variants Diacritics and other symbolsDiacriticsάὰᾶἀἁᾱᾰϊᾳσ̌LigaturesϗϛNumerals (Attic)ϛ (6)ϟ (90)ϡ (900) Related topicsUse as scientific symbolsOrthographyRomanizationCyrillizationChi ( , also ; uppercase Χ, lowercase χ; Greek: χῖ) is the twenty-second letter of the Greek alphabet. GreekPronunciationAncient GreekIts value in Ancient Greek was originally an aspirated velar stop/kʰ/ (in the Western Greek alphabet: /ks/).As (Roman coin)The as (pl.: assēs; symbol: 𐆚), occasionally assarius (pl.: assarii; Ancient Greek: ἀσσάριον, romanized: assárion), was a bronze, and later copper, coin used during the Roman Republic and Roman Empire. Republican era coinageIn lieu of coinage, the Romans first used bronze ingots, then disks known as the aes rude. The system thus named as was introduced in ca. 280 BC as a large cast bronze coin during the Roman Republic.
ForebrainIn the anatomy of the brain of vertebrates, the forebrain or prosencephalon is the rostral (forward-most) portion of the brain. The forebrain controls body temperature, reproductive functions, eating, sleeping, and the display of emotions. Vesicles of the forebrain (prosencephalon), the midbrain (mesencephalon), and hindbrain (rhombencephalon) are the three primary brain vesicles during the early development of the nervous system.
Roman numeralsNumbers in the Roman numeral systemRoman numerals on stern of the ship Cutty Sark showing draught in feet. The numbers range from 13 to 22, from bottom to top.Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.
Chiasm (anatomy)In anatomy a chiasm is the spot where two structures cross, forming an X-shape (from Greek letter χ, Chi). Examples of chiasms are: A tendinous chiasm, the spot where two tendons cross. For example, the tendon of the flexor digitorum superficialis muscle, and the tendon of the flexor digitorum longus muscle which even forms two chiasms. In neuroanatomy, the crossing of fibres of a nerve or the crossing of two nerves.
Anatomical terms of neuroanatomyThis article describes anatomical terminology that is used to describe the central and peripheral nervous systems - including the brain, brainstem, spinal cord, and nerves.
LatinLatin (lingua Latina or Latinum) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally spoken by the Latins in Latium (now known as Lazio), the lower Tiber area around Rome, Italy. Through the expansion of the Roman Republic, it became the dominant language in the Italian Peninsula and subsequently throughout the Roman Empire.
Optic chiasmIn neuroanatomy, the optic chiasm (), or optic chiasma (from Greek χίασμα (khíasma) 'crossing', from Ancient Greek χιάζω (khiázō) 'to mark with an X'), is the part of the brain where the optic nerves cross. It is located at the bottom of the brain immediately inferior to the hypothalamus. The optic chiasm is found in all vertebrates, although in cyclostomes (lampreys and hagfishes), it is located within the brain.
AnatomyStudy of the structure of organismsOne of the large, detailed illustrations in Andreas Vesalius's De humani corporis fabrica 16th century, marking the rebirth of anatomyAnatomy (from Ancient Greek ἀνατομή (anatomḗ) 'dissection') is the branch of morphology concerned with the study of the internal and external structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things.
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