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The Five Senses:


Sight


Hearing


Taste


Smell


Touch


Sight


The sense of sight uses the combination of the input from our eyes to produce a 3-D image in our brain. These images are transmitted through the Optic Nerve behind each eye. The image that is transmitted to the brain is inverted, but the brain has a sense of right-side-up so its is flipped again.


Hearing Hearing is a different type of nerve communication as it uses vibrations to transmit information to the brain. These vibrations take place in the Cochlea, which takes any sounds that inter the ear causes these vibrations.


Taste The tongue is a simple sense organ that it uses taste of food to send information to the brain on the sensations that happen. The sense of taste is linked to the sense of smeel that you need both to get the most out a favor or a smell of a food.


Smell: The sense of smell uses nerves that recognize multiple types of molecules that produce the smell or stench of something around you. These molecules trigger the chemo receptors in the nasal cavity that transmit the sensations to the brain.


Feeling Feeling uses a wide scope of nerves to transmit the action to the brain. The sense of feeling throughout the human body and is due to nerve endings just below the skin on your body. There is different concentration of nerves depending on the body part like the hands, feet, or lips. Also, the hairs on the skin are used amplify the sensations your skin feels and these nerve ends have a temperature gauge to tell the body hot or cold.


Senses And The Brain The brain uses four lobes to compute the five human senses. Parietal Lobe for taste, Occipital Lobe for sight, Temporal Lobe for smell and sound, and finally the Brain Stem or nervous system for feeling.


Nerve Impulses Nerve impulses are created by the triggering of the five senses of the human body. Each impulse has a speed of 0.1-100 m/s on the brain across each neuron. Each Neuron is made up of three main parts the cell body, nucleus, and the axon. There are other parts such as the dendrites and axon terminals for communication from one cell to another. Neuron Structure Other particular parts of the neuron consist of the Myelin sheath, Schwann's cells, and node ranvier. Synapse The brain synapse is when the information or electrical communication between neurons, muscles, or glands happen. The synapse is when there is an electrical discharge or chemical discharge to other cells to deliver information or instructions. Each transfer has a different voltage to determine the task to be permitted.

vary in size from 4 microns (.004 mm) to 100 microns (.1 mm) in diameter, length varies from a fraction of an inch to meters.

Depending on the type of fiber, the neural impulse travels at speed ranging from a sluggish 2 miles per hour to, in some myelinated fibers, a 200 or more miles per hour. But even this top speed is 3 million times slower than the speed of electricity through a wire Some actions require split second responses there are large nerve fibers that can conduct impulses at speeds as high as 330 feet (100 meters) per second.

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