Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 34.5, Problem 2TYK
Summary Introduction
Introduction:
Olfactory receptor is chemoreceptor which means smell. The olfactory sensitivity is different in different mammals that is depends on its sensory receptor cells. The olfactory receptors are found in the epithelial tissue neurons at the upper portion of the nasal cavity. It consists of dendrites from which thin and long cilia extended inside a mucous layer that covers the epithelium.
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Which of the following statements about the olfactory system is true?
Question 2 options:
Turbinates are always in motion to sweep odorants up to the olfactory epithelium.
All odorants must reach the olfactory epithelium through the nose.
The two nasal cavities sample different sections of air providing a binasal experience.
Olfactory receptor neurons die after about a month and must be resupplied.
In humans, the five principal kinds of taste sensations are_______,_______ , _______ ,______, and_____ . Molecules that leave the food and enter the air inside the mouth are detected by the sense of______ , which plays a major role in the brain’s perception of taste.
what statement is false about Olfactory epithelium and bulb
a. Olfactory neurons in the olfactory epithelium are bipolar neurons. Their distal ends are enlarged as olfactory vesicles, which have long cilia.
b. The cilia have receptors that respond to dissolved substances. There are approximately 1000 different odorant receptors.
c. The receptors activate a G protein complex, which opens ion channels.
d. At least 7 (perhaps 50) primary odors exist. The olfactory neurons have a very low threshold and accommodate rapidly.
Chapter 34 Solutions
Principles of Biology
Ch. 34.1 - Prob. 1BCCh. 34.1 - Prob. 1TYKCh. 34.2 - Prob. 1BCCh. 34.2 - Prob. 2BCCh. 34.2 - Prob. 1CCCh. 34.2 - Prob. 1TYKCh. 34.2 - Prob. 2TYKCh. 34.3 - Prob. 1CCCh. 34.3 - Prob. 1TYKCh. 34.4 - Prob. 1CC
Ch. 34.4 - Prob. 2CCCh. 34.4 - Prob. 1TYKCh. 34.4 - Prob. 2TYKCh. 34.5 - Prob. 1CCCh. 34.5 - Prob. 1TYKCh. 34.5 - Prob. 2TYKCh. 34.6 - Prob. 1TYKCh. 34.6 - Prob. 2TYKCh. 34 - Prob. 1TYCh. 34 - Prob. 2TYCh. 34 - The sensory receptors for audition (hearing) are...Ch. 34 - In an experiment to test the function of...Ch. 34 - Prob. 5TYCh. 34 - Prob. 6TYCh. 34 - Prob. 7TYCh. 34 - Prob. 8TYCh. 34 - Which is true? A loss of taste buds would reduce a...Ch. 34 - Prob. 10TYCh. 34 - Prob. 1CCQCh. 34 - Prob. 2CCQCh. 34 - Prob. 3CCQCh. 34 - Prob. 1CBQCh. 34 - Prob. 2CBQ
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- Fill in the blank: The axons of olfactory receptors pass through small openings in the _______________________ of the ethmoidbone.arrow_forwardWhich of the following parts of the vertebrate ear functions in the sense of balance? Cochlea Organ of Corti Eardrum Vestibular apparatusarrow_forwardFill in the blank: A chemical would be considered _______________________ if a person lacks a particular receptor site on the cilia of the olfactory neurons.arrow_forward
- In the sensory pathway for taste The second order neurons go to the limbic system Taste information is carried by the facial, glossopharyngeal, and vagus cranial nerves All of these are correct The receptor cells are the first–order neuronsarrow_forwardWhat are the major receptors responsible for these senses are the muscle-spindle stretch receptors and Golgi tendon organsarrow_forwardWhich of the following is a sense that humans possess? Pain from cold Ultraviolet vision Magnetic polarity Infrared vision Electrical currentsarrow_forward
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