SENSORY ORGANS

Sensory Organs Structures

Sensory Organs Structures

Introduction

Our awareness and familiarity with the exterior of the world or globe is dependent upon our approaches of observation and acuity. There is an established categorization of senses including vision, smell, taste, touch and smell that are administered by special organs of sense. Sensory organs are unique cellular structures that are responsible for controlling the five especial senses of human beings. Every organ of sense contains receptor for definite stimulus.

Discussion

The Ear

Human ear is the organ structure for the purpose of hearing (audition). The external ear obtrudes far away from skull and is formed resembling with the “Cup” to guide the waves of the sound on the way to the “tympanic membrane”. It is responsible for transmitting the vibes towards the internal ear by means of a chain of petite bones in the middle ear. These bones are known as the incus, stapes and malleus. The internal ear which is also called as “Cochlea”, is a chamber of twirl shape that is internally covered by the fibres of nerves that respond to the vibes and broadcast the urges to the brain through the auditory nerve. The effort of the both ears is combined by the brain to calculate and gauge the distance and direction of the resonance.

There is a vestibular system in the internal ear which is constructed by three semi-circular ducts that are just about perpendicular on every one and these are accountable for maintaining the equilibrium and balance and orientation to the space.

The ear of human being is able to recognize rates of recurrence from 16 cycles in one second, which is an extremely profound deep. Few individuals contain a “Perfect Pitch” which is the capability to accurately record a tone on the melodious range with no allusion to a peripheral measure.

The Nose

The sensory organ for smell is the nose. Mucous membrane lines up the cavity of nose and contains receptors of smell that are attached with the olfactory nerve. They comprise the fumes of numerous materials themselves. The molecules of the vapours are interacted by the receptors of smell and are transmitted by the sensation to the brain. There is a structure present in the nose which is known “Vomeronasal Organ”. The function of this organ is not established but it is supposed to be responsive to “Pheromones” that affect the cycle of reproduction. The receptors of olfaction are receptive for ...