Disorders of the eye and the ear
Clouding of the lens
What is cataracts.
Receptors stimulated by tissue damage
What is nociceptors (pain receptors)
an accessory organ of the eye that prevents entrance of foreign objects and wash tears over the surface of the eye
What is eyelids
This area of the ear is made up of the auricle and the external auditory canal. This area contains cerumen (earwax)
What is the external ear
What is the first sensory system to develop in the fetus
What is touch
Caused by increased intraocular pressure
What is Glaucoma
Receptors stimulated by changes in the chemicals such as hydrogen or calcium
What is chemoreceptors
The outermost layer of the eyeball; contains the contents of the eye and also shapes the eye.
What is the sclera
the middle ear contain 3 tiny bones called?
What is malleus, incus, and stapes
The tongue consists of 4 places where taste sensation occurs, what are the 4 tastes?
What are 2 other tastes that have been identified?
Bitter, sour, salty and sweet
Metallic and umami (meaty taste)
Involuntary and rapid oscillating movements of the eyeball.
May be side to side, up and down, or rotary.
What is nystagmus
Receptors stimulated by changes in the temperature
What is thermoreceptors
This has 2 main functions; 1) provides the retina with a supply of blood 2) dark pigments absorb excess light to prevent glare
middle layer
What is the choroid
What passageway connects the middle ear with the throat
What is the Eustachian tube
what are the drugs that cause pupillary dilation and constriction?
What is mydriatic agents and miotic agents
impaired hearing that develops with advancing age
What is presbycusis
Receptors stimulated by light
What is photoreceptors
This contains photoreceptors (rods & cones). It also houses the optic disc (blind spot)
innermost layer
What is the retina
What is the intricate system of tubes located within the inner ear called
What is the bony labyrinth
Pain that radiates towards the left shoulder and down the left arm is indicative of a heart attack this is called
Referred pain
inflammation or infection of the ear; earache
What is otitis
Receptors stimulated by changes in pressure or movement
What is mechanoreceptors
There are two cavities of the eyeball; Posterior and Anterior. What type of fluid do each of these contain.
What is Posterior has vitreous humor (gel-like).
Anterior has Aqueous humor (water-like)
receptors for hearing are located within what that contain tiny hairs.
What is the organ of corti
Which equilibrium detects sudden movements and maintains posture while the body is moving
Dynamic Equilibrium