Quiz 5

what is a dermatome?

an area of the skin innervated by a given spinal cord

areas bordering the primary auditory cortex are important for ____

analyzing the meaning of sounds

the ability to hear a note and identify it perfectly is called ___.

absolute pitch

What is the intensity of a sound wave called?

amplitude

a tonotopic map refers to an

auditory cortex map of sounds

tinnitus may be

due to a phenomenon like the phantom limb

The ____of a sound is the number of compressions per second

frequency

perception of a low tone is to _____ as perception of a high tone is to _______

frequency theory; place theory

How do sound waves ultimately result in the production of receptor potentials?

hair cells in the cochlea vibrate, causing ion channels to open their membrane

Vibrations in the fluid of the cochlea causes ____

hair cells to displace

olfactory information is coded in receptor cells through

hundreds of types of receptor molecules, each responsive to a different molecule

morphine and other opiate drugs decrease sensitivity to pain by _____

mimicking the effects of endorphins at the synapses

the receptors for taste are

modified skin cells

Why is it important for sound vibrations to be amplified as they pass through the ear?

more force is needed to make waves in fluid

what does the vestibular system detect?

movement of the head

what kind of deafness is the result of damage to the cochlea or hair cells?

nerve

human localize low frequencies by _____ differences and high frequencies by ____ differences

phase; loudness

The structure that we commonly refer to as the ear (on the outside of the head) is formally known as the

pinna

What occurs to a tone as the frequency increases?

pitch gets higher

pain receptors of the skin are _____

simple, bare neuron endings

what kind of receptors detect pain, warmth, and cold?

somatosensory

the sensory aspect of pain activates the ____ cortex, whereas the emotional aspect activates the ______ cortex

somatosensory; cingulate

the somatosensory system involves sensation of

the body and it's movements

an acceleration of the head at any angle causes _____

the jelly-like substance in one of the semicircular canals to push against the hair cells

the eardrum is also known as the

tympanic membrane