Central Neverous System

The central nervous system consists of bipolar,unipolar,and multipolar neurons,grey and white matter,astrocytes,oligodendrocytes,microglia,and ependymal cells,The brain which contains a cerebrum,cerebellum,limbic system,and a brainstem,ventricles.Also consist of the spinal cord.The spinal cord is the portal connecting the brain to the rest of the body.Spinal Cord and Brain

Telencephalon refers to the embryonic structure from which the mature cerebrum develops.Telencephalon is the largest of the divisions of the human brain.The telencephalon will become the Prosencephalon in the adult brain.Diencephalon is a brain region that is composed of the thalamus, hypothalamus, and pineal gland.The diencephalon develops into the Prosencephalon also in the adult brain.Adult Mesencephalon is a brain region that is composed of the superior and inferior colliculi, the cerebral peduncles, the red nucleus, the substantia nigra, and the reticular activating system.Metencephalon is a brain region that contains the pons and cerebellum.Metencephalon develops into the Rhombencephalon in the adult brain.Myelencephalon is a brain region that contains the medulla oblongata and also develops into the Rhombencephalon in the adult brain.Labeled

Premotor cortex controls learned motor skills of a reptitious or patterned nature.Frontal eye field is the control of visual attention and eye moments.Aduitory cortex is sound energy exiciting the inner ear hearing receptors causes impluses to be interpreted as pitch,loudness,and location.Broca’s area is active as we prepare to speak and even as we think about many voluntary motor activities other than speech.Werickle’s area functions are language comprehension,language recognition,language interpertation,and semantic processing. The frontal lobes are considered our emotional control center and home to our personality.The frontal lobes are involved in motor function, problem solving, spontaneity, memory, language, initiation, judgement, impulse control, and social and sexual behavior.The parietal lobes can be divided into two functional regions. One involves sensation and perception and the other is concerned with integrating sensory input, primarily with the visual system. The temporal lobes are highly associated with memory skills. Left temporal lesions result in impaired memory for verbal material. Right side lesions result in recall of non-verbal material, such as music and drawings. The cerebellum is involved in the coordination of voluntary motor movement, balance and equilibrium and muscle tone. It is located just above the brain stem and toward the back of the brain. The occipital lobes are the center of our visual perception system. They are not particularly vulnerable to injury because of their location at the back of the brain, although any significant trauma to the brain could produce subtle changes to our visual-perceptual system, such as visual field defects and scotomas. The pons contains nuclei that relay signals from the forebrain to the cerebellum, along with nuclei that deal primarily with sleep, respiration, swallowing, bladder control, hearing, equilibrium, taste, eye movement, facial expressions, facial sensation, and posture.The medulla is the lower half of the brainstem.The medulla oblongata controls autonomic functions, and connects the higher levels of the brain to the spinal cord.


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