Biology > STUDY GUIDE > Nevada State College BIOLOGY 223Ch 15 worksheet (All)

Nevada State College BIOLOGY 223Ch 15 worksheet

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What Do You Already Know? Try to answer the following questions before proceeding to the next section. If you’re unsure of the correct answers, give it your best attempt based on previous courses, previous chapters, or just your general knowledge. • What are the five special senses? Olfaction, gustation, audition, vision, and vestibular sensation • What areas of the brain interpret information from the special senses? The thalamus • Which parts of the tongue convey each different taste sensation? Papillae Module 15.1: Overview of the Special Senses Module 15.1 in your text provides an overview of the special senses and compares them to the general senses. Although they do have a lot in common, you will see many differences, too. By the end of the module, you should be able to do the following: 1. Describe the basic process of sensory transduction. 2. Compare and contrast the general and special senses. Build Your Own Glossary Following is a table listing key terms from Module 15.1. Before you read the module, use the glossary at the back of your book or look through the module to define the following terms. Key Terms for Module 15.1 Term Definition Transduction When a physical or chemical stimulus is converted into an action potential that can be interpreted by the brain General senses Also known as sensation (touch, pain, and temperature) Special senses Convey specific stimuli from specialized sensory organs in discrete locations of the head 285 The Special SensesSurvey It: Form Questions Before you read the module, survey it and form at least two questions for yourself. When you have finished reading the module, return to these questions and answer them. Question 1: Answer: Question 2: Answer: How do special senses differ from general senses? They differ in the stimuli detected, the structure of sensory receptors, and the location of the sensory nerves. When does transduction occur? When a stimulus is converted into an action potential that can be interpreted by the brain Key Concept: How is a physical stimulus transduced into a neural signal? The physical stimulus is detected and causes an action potential that can be interpreted by the brain Key Concept: How are the special senses different from general sensation? The structure and location of the sensory receptors are different as well as the type of stimuli detected. Module 15.2: Olfaction Now we look at how our sense of smell allows us to detect the presence of chemicals in the air and transduces them into signals our brain can interpret. When you finish this module, you should be able to do the following: 1. Describe and identify the location of olfactory receptors. 2. Explain how odorants activate olfactory receptors. 3. Describe the path of action potentials from the olfactory receptors to various parts of the brain. Build Your Own Glossary The following table is a list of key terms from Module 15.2. Before you read the module, use the glossary at the back of your book or look through the module to define the following terms. Key Terms for Module 15.2 Term Definition

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