Chapter 8 special senses vocab Flashcards
The point where the optic nerve leaves the back of the eye ball
Blind spot
Adjustments of the eye for seeing objects in close range
Accommodation
receptors sensitive to various chemicals in solution.
Chemoreceptors
the pigmented nutritive layer of the eye.
Choroid
the part of the tunic of the eye, between the choroid coat and the iris, consisting chiefly of the ciliary muscle and the ciliary processes. Function is to produce aqueous and control accommodation.
Ciliary body
a cavity of the inner ear resembling a snail shell; houses the hearing receptor.
Cochlea
the transparent anterior portion of the eyeball.
Cornea
the sensory organ of rotation located in the semicircular canal of the inner ear. The function is to sense angular acceleration and deceleration.
Crista ampullaris
sense that reports on angular or rotatory movements of the head in space.
Dynamic equilibrium
the pigmented, involuntary muscle that acts as the diaphragm of the eye. Controls how much light is let in.
Iris
bony cavities and membranes of the inner ear that house the hearing and equilibrium receptors.
Labyrinth
the elastic, doubly convex structure in the eye that focuses the light entering the eye on the retina.
Lens
Receptors within membrane sacs of vestibule that are essential to our sense of static equilibrium. Reports on changes in the position of the head in space with respect to the pull of gravity when the body is not moving.
Maculae
receptors sensitive to mechanical pressures such as touch, sound, or contractions.
Mechanoreceptors
Receptors for sense of smell
Olfactory receptors
Contains hearing receptors or hair cells
Organ of Corti
the three bones of the middle ear: hammer (malleus), anvil (incus), and stirrup (stapes); also called the auditory ________.
Ossicles
specialized receptor cells that respond to light energy.
Photoreceptors
To bend; usually refers to light
Refraction
sensitive layer of the eye; contains rods and cones.
Retina
the firm white fibrous outer layer of the eyeball; protects and maintains eyeball shape.
Sclera
three tiny, fluid-filled tubes in your inner ear that help you keep your balance.
Semicircular canals
balance concerned with changes in the position of the head.
Static equilibrium
receptors for taste on the tongue, roof of mouth, and pharynx.
Taste buds
