☀️the Senses Flashcards
Retina
A light senditive layer that contains rods and cones
Sclera
Holds eye in shape
Optic nerve
Carries impulses from the brains
Lens
Changes shape to focus on the retina
Iris
Controls amount of light entering the eye
Pupil
Allows light in
Pinna
Made of cartilage and collects vibrations in the ear and channels them into the ear
Auditory canal
Carries vibrations to the eardrum
Name a hearing disorder
Glue ear
What is glue ear caused by
Too much fluid collecting in the middle of the ear
What does glue ear result in
Viral infection
Glue ear causes
Loss of hearing
Why does glue ear cause loss of hearing
It prevents the three bones in the middle ear from moving properly
Cure for glue ear
Devongestant drugs taken for mild cases
Grommets taken in severe cases