ANP 1106 Lecture Notes - Lecture 15: Afferent Nerve Fiber, Tonotopy, Subarachnoid Space
16 Mar 2017
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Document Summary
10000 of them (2) circumvallate papillae which forms a series of 7-12 towards the back of the tongue: the papillae contain taste buds each consisting of 40-60 epithelial cells forming a taste pore. Receptors: the right side of the figure shows 5 types of gustatory cells. Organ: the olfactory organ is in the roof of the nasal cavity. Sensory pathway: volatile and water-soluble substances stimulate the olfactory cells which project to the mitral cells of the olfactory bulb, these then send projections via the olfactory tract to several areas. The projections via the thalamus to the orbito-frontal cortex provide the ability to perceive the quality of odors. Structures: the structures for hearing and balance are together. Sound waves: sounds are caused by changes in air pressure. This figure shows sound waves produced by a tuning fork. See the video at tinyurl. com/howearworks for a summary.
