Overview of the Brain | Meninges, Ventricles, Cerebrospinal Fluid, and Blood Supply | The Hindbrain and Midbrain | Forebrain | Cerebrum |
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What is the cerebrum
This is about 83% of the brain’s volume and consists of a pair of half globes called the cerebral hemispheres
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What is the transverse sinus
This sinus runs horizontally from the rear of the head toward each ear
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What is the medulla oblongata
The myelencephalon becomes the adult structure of this
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What is the diencephalon
The three structures that arise from this are the thalamus, hypothalamus, and epithalamus
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What is the frontal lobe
This lobe Lies immediately behind the frontal bone, superior to the eyes. It is chiefly concerned with voluntary motor functions, motivation, foresight, planning, memory, mood, emotion, social judgment, and aggression.
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What is rostral
One of the two directional terms used in the description of CNS anatomy, this means "toward the nose"
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What is the superior sagittal sinus
This sinus is found just under the cranium along the median line
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What are cerebellar peduncles
Posteriorly, the pons consists mainly of two pairs of thick stalks called this
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What is the thalamus
This is an ovoid mass perched at the superior end of the brainstem beneath the cerebral hemisphere and is the gateway to the cerebral cortex
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What is the occipital lobe
This lobe Is at the rear of the head, caudal to the parieto–occipital sulcus and underlying the occipital bone. It is the principal visual center of the brain
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What is the corpus callosum
At the bottom of the longitudinal fissure, the hemispheres are connected by a thick bundle of nerve fibers called this
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What are ventricles
The brain has 4 internal chambers called this
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What is the midbrain
This is a short segment of brainstem that connects the hindbrain and forebrain and is a result of the maturing of the mesencephalon
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What is the hypothalamus
This is the major control center of the endocrine and autonomic nervous systems
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What is the limbic system
This system is an important center of emotion and learning. It is a ring of structures on the medial side of the cerebral hemisphere, encircling the corpus callosum and thalamus.
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What is gray matter
This type of matter forms a surface layer called the cortex over the cerebrum and cerebellum
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What is an interventricular foramen
Through a tiny pore called this, each lateral ventricle is connected to the third ventricle, a narrow median space inferior to the corpus callosum.
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What is reticular formation
This is loose web of gray matter that runs vertically through all levels of the brainstem
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What is the epithalamus
This is a very small mass of tissue composed mainly of the pineal gland, the habenula, and a thin roof over the third ventricle
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What are stellate cells
These specific types of cells have spheroidal somas with dendrites projecting for short distances in all directions.
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What is the fifth week
By this week, the forebrain divides into the telencephalon and diencephalon
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What is the blood barrier system
This system strictly regulates what can get from the bloodstream into the tissue fluid of the brain.
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What is habituation
This is a process in which the brain learns to ignore repetitive, inconsequential stimuli while remaining sensitive to others.
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What are granule cells
These type of cells are the most abundant type of neuron in the entire brain
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What is insula
This is a small mass of cortex deep to the lateral sulcus, made visible only by retracting or cutting away some of the overlying cerebrum. Plays roles in understanding spoken language, in taste, and in integrating information from visceral receptors.
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