FUNCTIONS OF THE BODY ppt _ ANH VĂN (y dược)

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Functions of the body

The five senses

 Touch

 Smell

 Sight

 Hearing

 Taste

Touch also called taction is a perception

resulting from activation of neural

receptors, generally in the skin

The touch sense of itching caused by

insect bites or allergies involves special

itch-specific neurons in the skin and spinal cord

The loss or impairment of the ability to feel anything touched is called tactile

anesthesia

Smell or olfaction

In the brain, olfaction is processed by the olfactory system Olfactory receptor

neurons in the nose differ from most other neurons in that they die and regenerate on

a regular basis

 The inability to smell is called anosmia

Sight or vision is the ability of the brain

and eye

within the visible range (light) which is

why people see interpreting the image as

"sight."

 The inability to see is called blindness

Hearing or audition

is the sense of sound perception

 Hearing at high

frequencies declines with age.

 The inability to hear

is called deafness

Taste or gustation

 There are at least four types of tastes that

"buds" (receptors) on the tongue detect: sweet, salt, sour, and bitter

The inability to taste is called ageusia

 An Important function

 Steps

Other functions

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