What receives a physical or chemical stimulus and ultimately causes nerve impulses to be generated in sensory neurons?
receptors
Mechanoreceptors specifically designed to monitor muscle length are?
muscle spindles
Slow pain originating from an internal organ is often perceived as coming from an area of the body totally unrelated to the source is known as?
referred pain
The intensity of a sound is specifically associated with its?
amplitude of the sound waves
When animals appear that danger can be sensed in the form of pheromones, what are they detected by?
olfactory neurons
What type of receptors is most likely to be classified as “silent” receptors?
chemoreceptors
Somatic receptors distributed throughout the body are linked to sensory neurons that send impulses to which region of the brain?
parietal lobe
Receptors for fast pain generally occur where?
Surface of the body
Receptors that detect odors are located in?
upper part of nasal passages
Whereas the sense of taste is based on _______(how many?) classes of taste receptors, the sense of smell has over_____(how many?) different receptors for chemicals associated with odor.
5, 1,000
_________ extend from the tip of taste cells in taste buds into the mouth.
Taste hairs
Vibration of the _____ bends hairs of the hair cells, which ultimately generate impulses in ______.
basilar membrane, sensory neurons
When a sound wave first arrives to the ear, the wave is directed toward the auditory canal by?
pinna
What structure is used to sense rotational movement of the head and body?
semicircular canals
What part of the eye is continuous with the cornea and forms the outer surface of the back of the eye?
sclera
Know the 5 parts of the eye where light passes through or hits.
cornea, retina , pupil, lens, iris
Within the cochlea, higher-frequency sounds are converted to electrical impulses near?
oval window
The transparent covering of the front of the eye is the?
cornea
The vestibule contains two fluid-filled chambers, called the utricle and saccule, which are alike in that?
they each have a gel-like substance on the inside
The vitreous humor fills the main chamber of the eye. What structure of the eye would vitreous humor come in contact with?
retina
The blind spot is associated with the?
optic disk
What occurs when bright light hits the eye?
the pupil decreases in size
The malleus and incus function to?
amplify sound
What medical condition results when the transparency of the lens decreases?
cataracts
Color blindness usually results from a decrease in the number of?
cones
LASIK treatment functions to improve eyesight by?
changing the shape of the cornea