Brain Ear Eye Flashcards
What is the occipital lobe in charge of
Vision and sight interpretation
What is the parietal lobe in charge of
3 T’s: touch, taste, and temp
What is the frontal lobe in charge of
Logic, reasoning, language, and memory
What is the temporal lobe in charge of
Hearing
What are the three layers of the eye
Sclera, choroid layer, and retina
What is the sclera
Outer layer, maintains shape and protects eye
What is the choroid layer
Middle layer, absorbs light (dark colour) and has blood vessels to deliver nutrients and remove waste
What is the retina
The inner layer, has blood vessels covered by photo receptors (rods and cones) that respond to light
What does the cornea do
Bend light towards the pupil
What does the aqueous humor do
Gives nutrients to the front of the eye
What is the iris
Colourful muscle, changes the size of the pupil based on the amount of light in the environment
What is the pupil
A hole in the eye that allows light to enter, more light = constrict, less light = dilate
What does the lens do
Focus light on the retina and stimulate photoreceptors
What’s the optic nerve
Sensory neurons that are stimulated by photoreceptors that bring info about vision to the occipital lobe
What are the two functions of the ear
Balance and hearing
What is balance controlled by
Semicircular canals, which are filled with a liquid
How do semicircular canals help with balance
Head moves>fluid moves>cilia moves>causes depolarization in sensory neurons, message is sent to cerebellum to maintain balance
What does the pinna do
Collect soundwaves in the air
What does the auditory canal do
Brings sound to eardrum, wax + hair = filtration system
What does the tympanic membrane/eardrum do
Changes soundwaves into mechanical movement (vibrates)
What are ossicles
Bones that amplify and conduct sound
What does the eustachian tube do
Connects ear, nasal cavity, and throat (pharynx), releases pressure from the ear to protect ear drum
What does the oval window do
Pushes on the cochlea, creating a wave in the liquid inside
What’s the cochlea
A hard, snail-shell-shaped object protects the Organ of Corti (inside)
