Chapter 15 Flashcards
There are __________ different types of olfactory receptors in humans.
approximately 350
The ____ pathway conducts signals from the front and sides of the tongue to the brain.
chorda tympani
Which of the following tastes do newborns NOT react to?
salty
A fifth basic taste discovered many years after the other four is
referred to as umami
__________ is the inability to smell due to injury or infection.
anosmia
____ tastes cause an autonomic acceptance response and prepares the gastrointestinal tract for these substances.
sweet
Dogs are more sensitive to smells than humans because
dogs have many more olfactory receptors than humans
The central part of the tongue has no taste sensations because that part consists primarily of _______ papillae which do not contain taste buds.
filiform
Which of the following compounds had the same flavor whether or not the person’s nose was clamped to prevent olfaction?
MSG
The difference between “tasters” and “non-tasters” in the ability to taste PROP is due to:
both higher taste bud density and specialized receptors for “tasters.”
Eliminating the receptor for bitter tastes results in
no effect on responses to the other tastes
Areas on the tongue covered primarily with filiform papillae are similar to ______ in vision.
the blind spot
The tiny bumps on the tongue that contain the taste buds are the
papillae
Sodium nitrate results in a taste of
combination of sour, salty, and bitter
The axons of the olfactory sensory neurons project to the ___________ in the brain.
glomeruli in the olfactory bulb
The axons of the olfactory sensory neurons project to the ___________ in the brain.
glomeruli in the olfactory bulb
In taste research, people are classified as “tasters” or “non-tasters” based on their sensitivity to PTC, which tastes
bitter
Octanoic acid and octanol differ in molecular structure by one oxygen molecule. When smelling these substances,
the recognition profiles for the two substances are very different