Ear and Eye Test study guide

Label the parts of the ear.

The function of the human ear is to gather [blank_start]sound waves[blank_end] and transmit information about the [blank_start]sound[blank_end].

check off an item when done studying statement. these are the functions of the three sections of the ear.

Sound waves enter the [blank_start]outer ear[blank_end]. The outer ear acts like a funnel for the waves and moves them towards the [blank_start]ear canal[blank_end]. The waves strike the [blank_start]eardrum[blank_end] making vibrations in the [blank_start]middle ear[blank_end]. The [blank_start]hammer[blank_end] is stimulated by the vibrations and the sends these vibrations to the [blank_start]Anvil[blank_end] and then to the [blank_start]stirrup[blank_end]. The membrane then sends the vibrations to the liquid filled [blank_start]inner ear[blank_end]. These vibrations are channeled into the [blank_start]cochlea[blank_end]. Once inside the cochlea, nerve cells pick up the vibrations into electrical impulses. These electrical impulses are sent to the [blank_start]brain[blank_end] where the [blank_start]brain[blank_end] recognizes the impulses as [blank_start]sound[blank_end].

check off an item after studying statement, these are the illuminated vs. luminous and transparent vs translucent vs opaque

The function of the human eye is to [blank_start]allow you to sense light[blank_end].

The cornea [blank_start]protects[blank_end] the eye and [blank_start]bends[blank_end] light as it enters the eye. It also acts as a lens to help focus [blank_start]light rays[blank_end].

The pupil and Ciliary muscles are both muscles inside the eye.

Light enters the eye through the [blank_start]cornea[blank_end]. After passing through the cornea, light enters the [blank_start]pupil[blank_end]. the [blank_start]iris[blank_end] then expands or contracts depending on the amount of light. the light passes through the [blank_start]lens[blank_end] depending on what you are focusing on, the [blank_start]ciliary muscles[blank_end] Relax or contract. when did cornea and lens refract, an upside-down image is formed on the [blank_start]retina[blank_end]. The [blank_start]rods[blank_end] and cones help change the image on the retina into signals that travel to the [blank_start]brain[blank_end] along the short nerve called the [blank_start]optic nerve.[blank_end] The optic nerve combines the images from both of your eyes into a single three-dimensional image. your [blank_start]brain[blank_end] then interpret the signals as an upright image.

Rods allow you to see in dim light (black and white) and the cones allow you to see the primary colors of light (bright light).