Chapter 20
The Special Senses
Introducción a los Sentidos Especiales
Humans have five special senses—vision, smell, taste, hearing, and equilibrium. All these senses have anatomically distinct receptors to detect ...
Estructuras accesorias del ojo
The accessory structures of the eyes protect and support the eye but are not directly involved in vision.
Eyebrows, ...
Anatomía del globo ocular
The eyeball is a hollow fluid-filled structure composed of three layers—the fibrous, vascular, and inner layers.
The superficial fibrous layer has ...
Enfoque de la luz en el ojo
In a normal human eye, as light rays enter, they bend at the cornea, and the lens, to form an inverted image on the retina. The extent to which rays ...
Fotorreceptores y vías visuales
The retina contains two major types of photoreceptors— rods and cones.
Their inner segment, which contains most cell organelles, is situated in the ...
Receptores Olfativos: Localización y Estructura
The olfactory organ is situated on the roof of the nasal cavity. It covers the superior nasal concha on each side of the nasal septum.
It consists of the ...
Fisiología del olfato y de la vía olfativa
The olfactory organs are responsible for the olfaction or sense of smell.
The process of olfaction begins as olfactory cilia capture the odorant ...
Papilas gustativas y receptores
Taste buds—the sensory organs of the taste—are oval-shaped structures consisting of two major types of epithelial cells.
Gustatory epithelial ...
La fisiología del gusto
Taste physiology begins when the tastants — the chemicals that stimulate gustatory receptor cells — dissolve in saliva, diffuse through the ...
Anatomía de la oreja
The human ear has three important regions— external, middle, and internal.
The external ear consists of the cartilaginous auricle and the auditory ...
Vía Auditiva
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory ...
Equilibrio y Equilibrio
The body position and balance are detected by specialized organs in the inner ear. These include the utricle and saccule of the vestibule and the ...
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