EENT Flashcards
eyes, ears, nose, throat
are a key sensory organ, feeding information to your brain about the outside world
EYES
This protects the inside of your eye like a windshield.
Cornea
This is the white part of your eye that forms the general shape and structure of your eyeball.
Sclera
lubricates your corneas
tear fluid
This clear, thin layer covers the sclera and lines the inside of your eyelids.
Conjunctiva
This part contains the muscles that control the size of your pupil. It’s also responsible for eye color.
Iris
This is the black circle inside the iris. It’s like an adjustable window to the inside of your eye. It widens and narrows to control how much light enters your eye.
Pupil
This focuses light that enters your eye and directs it to the back of your eye
Lens
this clear, gel-like fluid fills the space between the lens and retina. It helps your eye hold its shape. It’s also sometimes known simply as “the vitreous.”
Vitreous humor
This thin layer of light-sensitive cells at the back of your eyes converts light into electrical signals. it contains rod and cones.
Retina
(which help you see in low light)
Rods
(which help you see colors)
Cones
This small area of your retina is key to your vision. It’s responsible for the center of your visual field. It also helps you see color and fine details.
Macula
This connects your retinas to your brain. It’s like the data cable that carries signals from your eyes, with connection points linking to multiple brain areas.
Optic nerve
These control your eye’s position, alignment and movement. They also contribute to your eye’s shape, which is part of your ability to switch your vision’s focus between near and far objects.
External muscles.
are paired organs, located on each side of your head, which help with hearing and balance. There are several conditions that can affect your ears, including infection, tinnitus, meniere’s disease, eustachian tube dysfunction and more.
EARS
The three main parts of your ear
outer ear, middle ear and inner ear.
separates your outer ear and middle ear.
tympanic membrane(eardrum)
is the part of your ear that’s visible. It’s what most people mean when they say “ear.” Also called the auricle or pinna
Outer ear (external ear)
begins on the other side of your tympanic membrane (eardrum).
Middle ear
what are the three tiny bones in this area ( middle ear )
the malleus, incus and stapes
which help equalize the air pressure in your ears and ______ that houses in your middle ear?
eustachian tubes
Yourinner ear contains two main parts, what are they?
the cochlea and the semicircular canals.
This snail-shaped structure contains two fluid-filled chambers lined with tiny hairs. this is also your hearing organ
cochlea
When sound enters, the fluid inside of your cochlea causes the tiny hairs to
Vibrate
also known as the labyrinthine, are responsible for balance. They tell your brain which direction your head is moving.
The semicircular canals