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Chapter 18

Functions of the Central and Peripheral Nervous System

Chapter 18

Functions of the Central and Peripheral Nervous System

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Sensation is the awareness of changes within or outside the body, either consciously or subconsciously. The conscious interpretation of a sensation is …
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Sensory receptors are dendrites of sensory neurons or specialized receptor cells that detect external and internal stimuli. Sensory receptors are grouped …
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The somatosensory system is the components of the central and peripheral nervous system that sense and process touch, pressure, pain, temperature, and …
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The somatic sensory pathways transmit impulses from sensory receptors to the cerebral cortex or the cerebellum. These pathways are composed of bundles of …
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The major somatic sensory pathways include the posterior column-medial lemniscus, the spinothalamic, and the spinocerebellar pathways. The posterior …
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The hierarchy of motor control is a way to categorize motor control circuits in order to understand how the human body can perform complex motor …
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The direct or pyramidal motor pathways regulate conscious and voluntary movements through the skeletal muscles. The tracts of motor pathways comprise …
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The indirect motor pathways control balance, posture, limb movements, and movements in response to visual and auditory stimuli.  The indirect motor …
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A reflex is a quick and automatic response to a stimulus, like pulling your hand away from heat or lifting your foot off a sharp object.   A …
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Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord. One of the …
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Brain waves are the patterns of electrical activity resulting from the action of millions of neurons. An electroencephalogram, or EEG, is a visual …
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Sleep is a physiological state of partial consciousness with reduced sensory and motor activity that can be disrupted by external stimuli. The sleep cycle …
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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information …
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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres. …