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Flashcards in Cerebral Hemispheres Deck (101):
1

Part of the cerebrum that forms the central core

Diencephalon

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Part of the cerebrum that forms the cerebral hemispheres

Telencephalon so

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Forms the largest part of the brain

Cerebral hemisphere

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Part of the cerebral hemisphere that controls the left portion of the body

Right hemispheres

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Controls the right portion of the body

Left hemisphere

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Composed of gray matter
Forms a complete covering for the cerebral hemispheres

Cerebral cortex

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Deep, midline Sagittal fissure
Separates the two cerebral hemispheres
Contains the fall cerebrum and anterior cerebral arteries

Longitudinal cerebral fissure

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Sickle-shaped fold of dura mater

Falx cerebrum

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Wide, flat bundle of neural fibers
Connects the hemispheres across the midline
Also known as the callosal commissure

Corpus callosum

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Second horizontal fold of dura mater that separates the cerebral hemispheres from the cerebellum

Tentorium cerebelli

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Folds in the cerebral surface
Increases the surface area of the cerebral cortex

Gyri

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Also known as fissures
Grooves which separate the gyri from each other

Sulci

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Separates the frontal lobe from the parietal lobe

Central sulcus or sulcus of rolando

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Gyrus that lies anterior to it contains motor cells that initiate the movements of the opposite side of the body

Central sulcus or sulcus of rolando

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Gyrus posterior to it lies the general sensory cortex that receives information from the opposite side of the body

Central sulcus or sulcus of rolando

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Runs downward and forward across the lateral aspect of the hemisphere

Central sulcus or sulcus of rolando

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Indents the superomedial border and lies between two parallel gyri

Central Sulcus or sulcus of rolando

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Separates the frontal and parietal lobes above from the temporal lobe below

Lateral sulcus or fissure of Sylvius

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Deep cleft found on the inferior and lateral surfaces of cerebral hemisphere

Lateral sulcus or fissure of Sylvius

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Area of cortex that lies at the bottom of the deep lateral sulcus

Insula

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Separates the parietal lobe from the occipital lobe

Parieto-occipital lobe

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Separates the occipital lobe medically from cuneus and lingual gurus

Calcarine sulcus

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Contains the primary motor area (carries out individual movements of the body)
Plays a role in a person's feeling and social judgment

Frontal lobe

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Contains 4 gyri and 3 sulcus

Frontal lobe

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Parallel to the central sulcus

Precentral sulcus

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Between the precentral and central sulci

Precentral gyrus

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Anterior to the precentral sulcus

Superior and inferior frontal sulci

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Superior to the superior frontal sulcus

Superior frontal gyrus

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Between the superior and inferior frontal sulci

Middle frontal gyrus

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Inferior to the inferior frontal sulcus

Inferior frontal gyrus

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Contains the areas for sensory reception and integration of sensory information
Occupies the area posterior to the central sulcus and superior to the lateral sulcus

Parietal lobe

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Divided into 3 gyri and 2 sulci

Parietal lobe

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Sulcus of the parietal lobe that is Parallel to the central sulcus

Postcentral sulcus

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Lies between the post central and central sulci

Post central gyrus

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Runs posteriorly from the middle of the post central sulcus

Intraparietal sulcus

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Superior to the intraparietal sulcus

Superior parietal gyrus

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Inferior to the intraparietal sulcus

Inferior parietal gyrus

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Contains the primary auditory cortex
Occupies the area inferior to the lateral sulcus

Temporal lobe

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Divided into 3 gyri and 2 sulci

Temporal lobe

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Run parallel to the posterior Ramus of the lateral sulcus

Superior and middle temporal sulci

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Between the lateral sulcus and superior temporal sulcus

Superior temporal gyrus

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Between the superior and inferior temporal sulci

Middle temporal gyrus

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Inferior to the inferior temporal sulcus

Inferior temporal gyrus

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Contains the primary visual area
Posterior to the parieto-occipital sulcus
Contains the cuneus and lingual gyrus

Occipital lobe

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Specific part of the frontal lobe that controls the movement of the parts of the body

Pre-central area

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Area of the frontal lobe that is associated with memories of past experiences

Posterior region

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Area of the frontal lobe responsible for storage of motor movements

Anterior region

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Area of the frontal lobe that needs high intensity stimuli to excite a part of the body
Found in the medial side of the frontal lobe

Supplementary motor area

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Area of the frontal lobe for visual tracking

Frontal eye field

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Area of the frontal lobe located in the inferior frontal gyrus
Responsible for expressive speech

Motor speech area of broca

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Area of the frontal lobe responsible for executive functioning, imagination and memory

Prefrontal cortex

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Area of the parietal lobe responsible for taste and sensation

Primary somesthetic area

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Area of the parietal lobe that gives meaning to different body sensations

Secondary somesthetic area

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Area of the parietal lobe responsible for naming objects that are unseen but are felt

Somesthetic association area

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Area of the parietal lobe associated with balance

Vestibular area

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Area of the parietal lobe associated with sense of taste

Taste area

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Area of the temporal lobe responsible for hearing without giving meaning to what the ears perceive

Primary auditory area

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Area of the temporal lobe that gives meaning to what the ears perceive

Secondary auditory area

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Area of the temporal lobe responsible for receptive speech

Sensory speech area of wernicke

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Area of the occipital lobe responsible for what the eye perceives without giving it meaning

Primary visual cortex

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Area of the occipital lobe that gives meaning to what the eyes perceive

Secondary visual area

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Area of the occipital lobe

Occipital eye field

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Fifth lobe of the brain
A segment of the cerebral cortex
Associated with visceral functions
Found at the bottom of the deep lateral sulcus

Insula

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Largest commissure of the brain
Facilitates interhemispheric communication

Corpus callosum

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Begins beneath the anterior end of the corpus callosum and continues until it reaches its posterior end

Cingulate gyrus

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Separates the cingulate gyrus from the corpus callosum

Callosal sulcus

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Separates the cingulate gyrus from the superior frontal gyrus

Cingulate sulcus

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Area of the cerebral cortex that surrounds the indentation produced by the central sulcus on the superior border

Paracentral lobule

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Posterior to parieto-occipital sulcus

Precuneus

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Triangular area of cortex

Cuneus

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Runs anteriorly below the calcarine sulcus

Collateral sulcus

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Between the collateral sulcus and calcarine sulcus

Lingual gyrus

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Anterior to the lingual gyrus

Para hippocampus gyrus

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Lateral to the sulcus and continuous with the inferior temporal gyrus

Occipotemporal gyrus

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Lies on the inferior surface of the frontal lobe where the olfactory bulb and tract over lie

Olfactory sulcus

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Medial to the olfactory sulcus

Gyrus rectus

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Lateral to the olfactory sulcus

Orbital gyri

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Resembles a C-shaped structure
Cavity lined with Ependymal and filled with CSF
Part of the ventricular system of the brain

Lateral ventricles

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Collection of gray matter within each hemisphere comprised of multiple subcortical nuclei of varied origin
Situated at base of the forebrain

Basal nuclei

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Lateral to the thalamus

Corpus striatum

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Divides the corpus striatum

Internal capsule

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Large c-shaped mass of gray matter closely related to the lateral ventricles
Responsible for voluntary movement

Caudate nucleus

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Wedge-shaped mass of gray matter

Lentiform nucleus

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Round structure at the base of the forebrain
Regulates movements and influence various types of learning
Plays a role in degenerative neurological disorders

Putamen

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Subcortical structure also known as
Part of the telencephalon but retains close functional ties with the sub thalamus

Globus pallidus

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Located at temporal lobe close to the uncus
Part of the limbic system

Amygdaloid nucleus

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Thin sheet of gray matter lateral to the external capsule and medial to the subcortical white matter of the Insula

Claustrum

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Connect the corresponding regions of the hemispheres

Commissural fibers

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Small bundle of nerves that crosses the midline in the anterior portion

Anterior commissure

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Crosses the midline immediately above the opening of the cerebral aqueduct into the third ventricle

Posterior commissure

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Myelinated nerve fibers which constitutes the efferent system of the hippocampus
Carries signals from the hippocampus to the hypothalamus

For is

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Small bundle of nerve fibers associated with habernular nuclei
Receives afferent fibers from the amygdaloid nuclei and hippocampus

Habernular commissure

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Nerve fibers that essentially connect various cortical regions within the same hemisphere

Association fibers

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Located immediately beneath the cortex
Connects adjacent gyri

Short association fibers

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Connects the first motor speech area and the gyri on the inferior surface of the frontal lobe with the cortex of the pole of the temporal lobe

Uncinate fasciculus

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Long, curved fasciculus lying within the white matter of the cingulate gyrus
Connects the frontal and parietal loves with parahippocampal and adjacent temporal cortical regions

Cingulum

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Largest bundle of nerve fibers connecting the anterior part of the frontal lobe to the occipital and temporal lobes

Superior longitudinal fasciculus

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Runs anteriorly from the occipital lobe, passing lateral to the optic radiation, and is distributed to the temporal lobe

Inferior longitudinal fasciculus

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Connects the frontal lobe to the occipital and temporal lobes

Fronto-occipital fasciculus

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Made up of nerve fibers passing to and from the brainstem to the entire cerebral cortex

Projection fibers

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Largest part of the brain
Situated at anterior end of middle cranial fossae

Cerebrum