BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Question
Chapter 30, Problem 4CT
Summary Introduction
To explain:
The reasons for a compound to be sweet and bitter at the same time.
Introduction:
Taste buds present on the tongue play an important role in making tongue as one of the five sensory organs. The taste buds present on the tongue act as chemoreceptors that regulate the food choice of a person. The taste bud converts the chemical signal into neural signal and transmits it to the somatosensory cortex for processing.
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Taste receptors in the toungue are ipsilateral to the side of the gustatory cortex on which their input is processed.
True
False
Taste cells form chemical synapses with afferent neurites that make up the gustatory
cranial nerve. For signals to pass onto the afferents, what critical step must take
place?
Opening of Ca++ channels
Opening of K+ channels
Opening of Na+ channels
Generation of an action potential
A mixture of two of the compounds illustrated in Figure 33.6 is applied to a section of olfactory epithelium. Only receptors 3, 5, 9, 12, and 13 are activated, according to Figure 33.7. Identify the likely compounds in the mixture.
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