The Senses and Sense Organs
Terms in this set (54)
living sensors that obtains and relays information to the spinal cord or brain
all the senses of your skin
sight, hearing, smell, taste, and balance
A specialized organ or structure, such as the eye, ear, tongue, nose, or skin, where sensory neurons are concentrated and which functions as a receptor.
a bare dendrite that reacts t a certain type of strong stimulus
sensory receptors responsible for sensations of touch and pressure
respond to temperature changes
react to temperatures above normal body temperature
sensitive to temperatures below normal body temperatures
sense of taste and smell
a sensory receptor in a biological cell membrane to which an external molecule binds to generate a smell or taste sensation
organs responsible to the sense of taste
Any of numerous olfactory filaments in the olfactory portion of the nasal mucosa that enter the olfactory bulb
a taut membrane stretched across the canal like the surface of a drum
malleus, incus, stapes
three tiny bones in the inner ear
a coiled tube resembling a snail's shell
the waving nerves cells sends electrical messages into the _______ which carries electrical messages to the brain, where they are translated into meaningful sounds
serve as balance-sensors; three fluid-filled tubes
hearing that is received by vibrations from the jaw bones
1.passage equalizing air pressure in ear: a bony passage extending from the middle ear to the nasopharynx that has a role in equalizing air pressure on both sides of the eardrum
socket and eyelid
protect the eye
produced by tear glands
tear glands, located under the upper eyelid
destroys bacteria; a important component of tears
muscle that serve to move the eye
white of the eye
the area which light enters the eye
layer of connective tissue rich in blood vessels
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.
the part of the uvea at the front of the eye
opening through which light enters
the innermost layer of the eye
rods and cones
two kinds of cells; long thin cells. cones are slightly shorter and thicker than the rods
the area that produces the clearest vision
a large bundle of individual nerves, each of which carries nerve impulses from a specific region of the retina to the brain
the point on the retina where the optic nerve leaves the eyeball
consists of a molecule derived from vitamin A that is suspended in a protein framework
persistence of vision
the retention of a visual image for a short period of time after the removal of the stimulus that produced it:
a space filled with a clear fluid which is produced from blood circulating in the ciliary body
the part of the eye that focuses the rays of light which pass through
the increase in the curvature of the lens to focus on nearby objects
a transparent jellylike substance that is about 98% water
the ability to see only near objects clearly
the ability to see only far objects clearly
cause of blurred vision: an unequal curving of one or more of the refractive surfaces of the eye, usually the cornea.
a visual condition which becomes apparent especially in middle age and in which loss of elasticity of the lens of the eye causes defective accommodation and inability to focus sharply for near vision
condition were someone cannot distinguish one or more of the primary colors of light
condition when a person is almost totally blind in dimly lit places
a condition in which the pressure of the fluid inside the eye becomes much higher than normal
pain, mechanoreceptors, thermocreceptors
What are the three broad categories of sensory receptors in the skin?
heat, cold, pain, stress, etc.
How are pain receptors stimulated?
What are your two chemical senses?
the inner ear
What organ is responsible for you sense of balance?
the continued perception of an image for about a tenth of a second after the object is gone
`What is persistence of vision?
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