Please enable JavaScript.
Coggle requires JavaScript to display documents.
Chapter 8.2 - The Senses (Vision (Pupil (The opening in the iris that…
Chapter 8.2 - The Senses
Vision
-
-
-
-
Light
Light travels in the form of electromagnetic radiation which includes radio waves, microwaves, ultraviolet rays, X-rays, and gamma rays. This is known as the electromagnetic spectrum.
Kinesthesis
-
The sensation comes from receptors that are in and near joints, tendons, and muscles.
Touch
Receptors in the skin are responsible for providing the brain with at least four kinds of information about the environment: pressure, warmth,cold, and pain.
Pain results from many different stimuli. The gate theory of pain explains how shifting the attention away from the pain, will reduce it.
Hearing
Auditory Nerve
the nerve that carrie impulses from the inner ear to the brain which results in the perception of sound.
Pathway of Sound
Sound is measured in Decibels (DB). Outer ear receives sound waves. The middle ear is an air-filled cavity. It is linked to the eardrum and to the cochlea.
Deafness
Sensorineural Deafness
Sensorineural deafness occurs from damage to the cochlea, the hair cells, or the auditory neurons.
Conduction Deafness
When anything hinders physical motion through the outer or middle ear or when the bones of the middle ear become rigid and cannot carry sounds inward.
Smell & Taste
Olfactory Nerve
-
For you to smell something, the appropriate gaseous molecules must come into contact with small receptors in your nose that must come into contact with the smell receptors in your nose. These molecules enter your nose in vapors that reach a special membrane in the upper part of the nasal passages on which the smell receptors are located
Balance
Vestibular Sense
Three semicircular canals that provide the sense of balance, located in the inner ear and connected to the brain by a nerve.