University:
University of Delaware
Course:
BISC 208 | Introductory Biology II
Academic year:

2023
Views:

103

Pages:

2
Author:

Adalynn Reilly

How to complete a pre-class guide: Complete these before class. Use the pre-class videos on Canvas and listed chapter sections to complete the guide. Bring this to class to help you with our in-class work! When you read the book, you should not read the entire chapter. Instead, focus your attention on the parts of the chapter relevant to the questions. (The structure of this worksheet is mean to save you time by not having to read everything!) Anything that is underlined is a vocabulary word you should be familiar with when you come to class. Sensory Systems ( Pre-Class Video for Thursday Week 12) Supplemental Textbook Section 44.1 1. Sensory information must be converted into _ ________ energy. This required ___________ on the plasma membrane that ___________ in response to a stimulus. 2. Sensory receptors can be classified based on location: a. General Sense Receptors: i. Distributed ___________ the body ii. Located in _________ and ___________ organs iii. Typically ________ in structure b. Somatic Sensory Receptors i. Examples: ii. Detect ___________, vibration, ___________ and stretch c. Visceral Sensory Receptors i. Located in the walls of the abdomen and intestines ii. Respond to ____________, chemicals, ________ and pain 3. Sensory receptors can be classified based on the stimulus they receive: a. Chemoreceptors: i. Chemicals dissolved in __________ ii. Examples: ________ buds, blood vessels monitor _____ and _____ b. Nociceptors: Respond to _________ stimuli i. Somatic nociceptors: Chemical, heat or _________ damage to surface or skeletal muscles ii. Visceral nociceptors: Detect internal body damage in viscera (e.g. ________ deprivation, tissue _________). c. Photoreceptors: Located in the ________ i. Detect changes in ________, intensity, color, __________ d. Mechanoreceptors: Detect ________, pressure, _________, stretch i. Baroreceptors: special mechanoreceptor that detects changes in _______ or ______________ ii. Involved by regulation of ______ _________ e. Thermoreceptors: Changes in temperature i. Located in both ________ and ______________ 4. Describe or draw the two types of sensory receptor: 1 5. Signaling of taste receptors: each group has a distinct transduction mechanism: a. Salty: b. Sour: c. Sweet: d. Bitter: e. Umami: 6. Smell: Humans have about _______ different receptors for smell and can identify about ____________ different odors. 7. Photoreceptors consist of: a. Rods: b. Cones: c. Why does this explain night vision? 2

Introductory Biology Answer Key Sensory Systems

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