Like taste sensation, smell is also a chemical sensation. For taste, the substance must be in soluble form, and for smell it must be in gaseous form. 1. Impulses do not pass through thalamus. 2. Impulses do not pass to neocortex (no neocortical representation). 3. Receptors are first order neurons in this case and in […]
Mechanism of Smell (Olfactory Sensation)
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Taste Sensation in Humans (Gustation)
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In this article we will discuss about the taste sensation in humans. Receptors are present in taste buds (Fig. 10.32), situated in the tongue, soft plate, epiglottis and certain regions of the pharynx. Microvilli project from one end of the pole. Central portion of dorsum of tongue is devoid of papillae (Fig. 10.33). Afferent Nerve […]
Essay on Human Ear: Structure and Function
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In this article we will discuss about the structure and function of human ear with its suitable diagram. Ear has two important functional components: 1. Cochlea the hearing part containing receptor for hearing is located here. 2. The vestibular part having semicircular canals, the utricle, and the saccule are present here. The receptor in these […]
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