&magicnumber=20&question1=The ____ of sound waves is the number of peaks of sound pressure per second measured in hertz (Hz), which determines their pitch. High-pitched sounds are the result of a rapid frequency of vibration, whereas low frequency produces low-pitched sounds.&question2=The ____ or intensity of sound waves, is the height of the sound wave peak, and determines a sound's loudness. Loudness is usually measured in decibels (dB).&question3=The sound waves hit the eardrum, whose vibrations are carried by the three bones of the middle ear to the ____ , a spiraled organ in the inner ear that looks like a snail.&question4=The organ of ____ contains the auditory receptors. The fluid in the cochlea pushes the basilar membrane up so the hair cells brush against the tectorial membrane.&question5=The ____ theory of hearing states that the number of vibrations at the basilar membrane determines the pattern of firing of neurons that carry impulses to the brain&question6=The ____  principle states that individual neurons fire in sequence and thus increase the total frequency of impulses it is possible to send to the brain.&question7=The ____ theory of hearing states that the sensation of pitch is determined by the area on the basilar membrane that is stimulated.&question8=A structure in the outer or middle ear not functioning causes ____ deafness.&question9=Damage to the inner or auditory nerve causes ____ deafness and is a severe problem.&question10=Sound delivered only to one ear is called monaural, whereas sound delivered to both ears is called ____   &question11=Binaural cues allow us to judge sound ____ , as the brain processes the sound that reaches one ear just slightly before the other.&question12=The senses of smell and taste are called the chemical senses. The sense receptors for smell, or ____   , are located high in the nasal passages leading from the nose to the throat.&question13=The ____  theory of olfactory coding states that the odor receptors have holes the same shape as the odor molecules, and the odor molecules fit into the holes like a key fits a lock.&question14=The ____ receptors in our tongues are sensitive to four qualities: sweet, sour, salty, and bitter.&question15=The receptors for taste are clustered together in ____  , which are mostly on the top and sides of the tongue. People are most sensitive to bitter, then sour, then salty, and are the least sensitive to sweet tastes.&question16=The four ____ senses include those of pressure, pain, cold, and warmth.&question17=Touch, or ____ , is detected by receptors located throughout the body just under the surface of the skin.&question18=The receptors for ____ are likely to be the free nerve endings.&question19=Melzack and Wall's (1965) ____  theory of pain states that an area of the spinal cord (substantia gelatinosa) acts as a gate that regulates the level of neural impulse transmission from the free nerve endings to transmission cells in the spinal cord.&question20=When neural impulses in the large, fast nerve fibers reach the substantia gelatinosa gate,  they ____ it. When slower impulses reach the gate, they open it and allow more pain signals to reach the brain.&answer1=Frequency&answer2=Amplitude&answer3=Cochlea&answer4=Corti&answer5=Frequency&answer6=Volley&answer7=Place&answer8=Conduction&answer9=Nerve&answer10=Binaural&answer11=Location&answer12=Olfaction&answer13=Stereochemical&answer14=Taste&answer15=Taste Buds&answer16=Skin&answer17=Pressure&answer18=Pain&answer19=Gate-Control&answer20=Close&gamename=Part One: Review # 3 Sensation and Perception&loadresult=Load Success!