Taste And Smell

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The human body does amazing things on a daily basis. All the senses that the body uses consists of nerves, neurotransmitters and the brain decodes the messages that was received. Smell is the passing of odorants through the nose, received by the olfactory cells, and are sent directly to the brain. Taste is the weakest of the five senses but it is the sensory function of the central nervous system( The Science of Taste and Smell). We taste and smell things every day but little do most people know that these two senses work together to make life even more satisfactory! Scientists believe that smell was prominent during the caveman era. It was used to sense when to mate, for hunting, and other things that were essentials to their everyday …show more content…

The human tongue has approximately ten thousand taste buds each of which are consisted of fifty to a hundred and fifty taste receptors. Receptors are what absorbs the flavor, sends it to the taste nerves, and sent to the brain. There are two types of nerves that link the tongue to the brain: the glossopharyngeal nerve and the facial nerve. The glossopharyngeal nerve is makes up the back half of the tongue and the facial nerve makes up the front half of the tongue. There is another cranial nerve that is located in the back of the mouth called the vagus nerve. All of these nerves are the reason we are able to taste and enjoy our …show more content…

that process of a neuron by which impulses travel away from the cell body; at the terminal arborization of the axon, the impulses are transmitted to other nerve cells or to effector organs. Larger axons are covered by a myelin sheath.ax´onal http://medical-dictionary.thefreedictionary.com/axon Definition of Synapse synapse /syn·apse/ (sin´aps) the site of functional apposition between neurons, where an impulse is transmitted from one to another, usually by a chemical neurotransmitter released by the axon terminal of the presynaptic neuron. The neurotransmitter diffuses across the gap to bind with receptors on the postsynaptic cell membrane and cause electrical changes in that neuron (depolarization/excitation or hyperpolarization/inhibition). http://medical-dictionary.thefreedictionary.com/synapse Chemistry of Smell http://cactus.dixie.edu/smblack/chem1010/lecture_notes/2D_chemistry_of_smell.pdf slide 16 18 20 21 22

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