eLearning Connection (See related pages) Concepts Questions Media Resources 18.1 Sensory Receptors and Sensations Sensory receptors detect certain types of external or internal stimuli. Sensation occurs when sensory receptors send nerve impulses to the brain. 1. What category of receptors includes pain receptors? Answer 2. Explain the difference between a sensation and a perception. Answer Essential Study Partner Introduction Chemoreceptors Light Receptors Mechanoreceptors Receptors and Sensations General Biology Weblinks Anatomy & Physiology 18.2 Proprioceptors and Cutaneous Receptors Proprioceptors in muscles and joints help the body maintain balance and posture. Cutaneous receptors in the skin are sensitive to touch, pressure, pain, and temperature (warmth and cold). 3. What are the two types of proprioceptors, what do they do, and where are they located? Answer 4. Where are cutaneous receptors located within the skin? Answer Essential Study Partner Somatic Senses Art Quiz Sensory Receptors in Skin 18.3 Chemical Senses Taste cells within taste buds in the mouth are sensitive to molecules that result in bitter, sour, salty, or sweet tastes. Olfactory cells within the olfactory epithelium are sensitive to molecules that result in a sense of smell. 5. Explain how taste is perceived. Answer 6. Why does the sense of smell seem to be so closely linked to memory and emotions? Answer Essential Study Partner Sense of Taste Sense of Smell Art Quiz Smell Animation Quizzes Smell Taste 18.4 Sense of Vision The photoreceptors for sight contain visual pigments, which detect light rays. A great deal of integration occurs in the retina of the eye before nerve impulses are sent to the brain. 7. Trace the path of light through the eye to the retina. Answer 8. What abnormalities of the eyeball lead to nearsightedness and farsightedness? Answer Essential Study Partner Sense of Vision Art Quizzes Eye Evolution Retina Structure Visual Processing Pathway Animation Quiz Vision Labeling Exercise Anatomy of the Human Eye (1) (48.0K) Anatomy of the Human Eye (2) (52.0K) 18.5 Sense of Hearing The mechanoreceptors for hearing are hair cells in the cochlea of the inner ear that detect pressure waves. 9. What portion of the ear is filled with fluid, and what portions contain air? Answer 10. How are volume and pitch perceived by the hair cells of the cochlea? Answer Essential Study Partner Sense of Hearing Animation Quiz Hearing Labeling Exercise Anatomy of the Human Ear (34.0K) Case Study Hearing Loss and Jobs 18.6 Sense of Equilibrium Hair cells in the semicircular canals of the inner ear are responsible for rotational equilibrium. Hair cells in the vestibule of the inner ear are responsible for gravitational equilibrium. 11. What is the difference between rotational equilibrium and gravitational equilibrium, and where is each sense housed within the inner ear? Answer Essential Study Partner Equilibrium Art Quiz Semicircular Canals and Ampulla Animation Quizzes Sense of Balance Sense of Rotational Acceleration
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