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单词 cerebrum
释义

cerebrum


cer·e·brum

C0211100 (sĕr′ə-brəm, sə-rē′-)n. pl. cer·e·brums or cer·e·bra (-brə) The large rounded structure of the brain occupying most of the cranial cavity, divided into two cerebral hemispheres that are joined at the bottom by the corpus callosum. It controls and integrates motor, sensory, and higher mental functions, such as thought, reason, emotion, and memory.
[Latin, brain; see ker- in Indo-European roots.]

cerebrum

(ˈsɛrɪbrəm) n, pl -brums or -bra (-brə) 1. (Anatomy) the anterior portion of the brain of vertebrates, consisting of two lateral hemispheres joined by a thick band of fibres: the dominant part of the brain in man, associated with intellectual function, emotion, and personality. See telencephalon2. (Anatomy) the brain considered as a whole3. (Zoology) the main neural bundle or ganglion of certain invertebrates[C17: from Latin: the brain] ˈcereˌbroid adj cerebric adj

ce•re•brum

(səˈri brəm, ˈsɛr ə-)

n., pl. -brums, -bra (-brə). the forward and upper part of the brain, involved with voluntary movement and conscious processes, in mammals and birds greatly enlarged. Compare cerebral hemisphere. [1605–15; < Latin: brain]

cer·e·brum

(sĕr′ə-brəm, sə-rē′brəm) The largest part of the vertebrate brain, filling most of the skull and consisting of two cerebral hemispheres divided by a deep groove and joined by a mass of nerve fibers. The cerebrum processes complex sensory information and controls voluntary muscle activity. In humans it is the center of thought, learning, and memory.

cerebrum


The upper, major part of the brain, with two hemispheres, and including the diencephalon. It handles consciousness, learning, memory, emotions, sensations, and voluntary movements.
Thesaurus
Noun1.cerebrum - anterior portion of the brain consisting of two hemispherescerebrum - anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humanscentral sulcus, fissure of Rolando, Rolando's fissure, sulcus centralis - a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobesfissure of Sylvius, lateral cerebral sulcus, sulcus lateralis cerebri, Sylvian fissure - the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheresneural structure - a structure that is part of the nervous systemcerebral hemisphere, hemisphere - either half of the cerebrumcerebral cortex, cerebral mantle, cortex, pallium - the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrumgyrus, convolution - a convex fold or elevation in the surface of the braintelencephalon - the anterior division of the forebrain; the cerebrum and related parts of the hypothalamus
Translations
головной мозг

cerebrum


cerebrum:

see brainbrain,
the supervisory center of the nervous system in all vertebrates. It also serves as the site of emotions, memory, self-awareness, and thought. Anatomy and Function
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.

cerebrum

[sə′rē·brəm] (cell and molecular biology) The enlarged anterior or upper part of the vertebrate brain consisting of two lateral hemispheres.

cerebrum

1. the anterior portion of the brain of vertebrates, consisting of two lateral hemispheres joined by a thick band of fibres: the dominant part of the brain in man, associated with intellectual function, emotion, and personality 2. the brain considered as a whole 3. the main neural bundle or ganglion of certain invertebrates

cerebrum


cerebrum

 [ser´ĕ-brum] the main portion of the brain, occupying the upper part of the cranial cavity; its two hemispheres" >cerebral hemispheres, united by the corpus callosum, form the largest part of the central nervous system in humans. The term is sometimes extended to refer to the postembryonic forebrain and midbrain together or to the entire brain.

cer·e·brum

, pl.

ce·re·bra

,

cer·e·brums

(ser'ĕ-brŭm, sĕ-rē'brŭm; -bră; -brŭmz), [TA] Although the pronunciation of this word with stress on the first syllable is classically correct, the second syllable is often stressed in the U.S.Term originally referring to the largest portion of the brain, including practically all parts within the skull except the medulla, pons, and cerebellum; it now usually refers only to those parts derived from the telencephalon and includes mainly the cerebral hemispheres (cerebral cortex and basal nuclei, also called basal ganglia). [L., brain]

cerebrum

(sĕr′ə-brəm, sə-rē′-)n. pl. cere·brums or cere·bra (-brə) The large rounded structure of the brain occupying most of the cranial cavity, divided into two cerebral hemispheres that are joined at the bottom by the corpus callosum. It controls and integrates motor, sensory, and higher mental functions, such as thought, reason, emotion, and memory.

brain

The epicentre of the central nervous system, which is located within the cranial vault and divided into the right and left hemispheres. The brain functions as a primary receiver, organiser and distributor of information for the body; it is the centre of thought and emotion, co-ordinates and controls bodily activities and interprets sensory visual, auditory, olfactory, tactile and other information.

cer·e·brum

, pl. cerebra (ser'ĕ-brŭm, -bră) [TA] Originally referred to the largest portion of the brain; it now usually refers only to the parts derived from the telencephalon and includes mainly the cerebral hemispheres (cerebral cortex and basal ganglia). [L., brain]

cerebrum

(sĕr′ĕ-brŭm) (sĕr-ē′brŭm) [L.] CEREBRUM)The largest part of the brain, consisting of two hemispheres separated by a deep longitudinal fissure. The hemispheres are united by three commissures—the corpus callosum and the anterior and posterior hippocampal commissures. The surface of each hemisphere is thrown into numerous folds or convolutions called gyri, which are separated by furrows called fissures or sulci.

Embryology

The cerebrum develops from the telencephalon, the most anterior portion of the prosencephalon or forebrain.

Anatomy

Each cerebral hemisphere consists of three primary portions—the rhinencephalon or olfactory lobe, the corpus striatum, and the pallium or cerebral cortex. The cortex is a layer of gray matter that forms the surface of each hemisphere. The part in the rhinencephalon (phylogenetically the oldest) is called the archipallium; the larger nonolfactory cortex is called the neopallium. The cerebrum contains two cavities, the lateral ventricles (right and left) and the rostral portion of the third ventricle. The white matter of each hemisphere consists of three kinds of myelinated fibers: commissural fibers, which pass from one hemisphere to the other; projection fibers, which convey impulses to and from the cortex; and association fibers, which connect various parts of the cortex within one hemisphere.

Lobes: The principal lobes are the frontal, parietal, occipital, and temporal lobes and the central (the insula or island of Reil). Basal ganglia: Masses of gray matter are deeply embedded within each hemisphere. They are the caudate, lentiform, and amygdaloid nuclei and the claustrum. Fissures and sulci: These include the lateral cerebral fissure (of Sylvius), the central sulcus (of Rolando), the parieto-occipital fissure, the calcarine fissure, the cingulate sulcus, the collateral fissure, the sulcus circularis, and the longitudinal cerebral fissure. Gyri: These include the superior, middle, and inferior frontal gyri, the anterior and posterior central gyri, the superior, middle, and inferior temporal gyri, and the cingulate, lingual, fusiform, and hippocampal gyri.

Physiology

The cerebrum is concerned with sensations (the interpretation of sensory impulses) and all voluntary muscular activities. It is the seat of consciousness and the center of the higher mental faculties such as memory, learning, reasoning, judgment, intelligence, and the emotions. See: illustration

On the basis of function, several areas have been identified and located. Motor areas in the frontal lobes initiate all voluntary movement of skeletal muscles. Sensory areas in the parietal lobes are for taste and cutaneous senses, those in the temporal lobes are for hearing and smell, and those in the occipital lobes are for vision. Association areas are concerned with integration, analysis, learning, and memory.

cerebrum

The largest, and most highly developed, part of the brain. It contains the neural structures for memory and personality, cerebration, volition, speech, vision, hearing, voluntary movement, all bodily sensation, smell, taste and other functions.

cerebrum

that part of the forebrain which expands to form the CEREBRAL HEMISPHERES, found in all vertebrates except fishes.

cer·e·brum

, pl. cerebra (ser'ĕ-brŭm, -bră) [TA] Cerebral parts derived from the telencephalon; includes mainly the cerebral cortex and basal ganglia. [L., brain]

cerebrum


  • noun

Words related to cerebrum

noun anterior portion of the brain consisting of two hemispheres

Related Words

  • central sulcus
  • fissure of Rolando
  • Rolando's fissure
  • sulcus centralis
  • fissure of Sylvius
  • lateral cerebral sulcus
  • sulcus lateralis cerebri
  • Sylvian fissure
  • neural structure
  • cerebral hemisphere
  • hemisphere
  • cerebral cortex
  • cerebral mantle
  • cortex
  • pallium
  • gyrus
  • convolution
  • telencephalon
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更新时间:2024/12/23 0:47:14