3. Select the terms from column B that match the column A descriptions. Column A 1. collectively called the auditory ossicles 2. sacs found within the vestibule; sites of the maculae 3. vibrates at the same frequency as the sound waves hitting it; transmits the vibrations to the ossicles 4. fluid contained within the membranous labyrinth 5. fluid contained within the bony labyrinth 6. grains of calcium carbonate in the maculae 7. location of the spiral organ 8. involved in equalizing the pressure in the middle ear with the external air pressure 9. positioned in all three special planes 10. gelatinous cap overlying hair cells of the crista ampullaris Column B ampulla b. ampullary cupula basilar membrane a. C d. cochlear duct e. endolymph f. incus (anvil) g. malleus (hammer) h. otoliths i. oval window i perilymph k. pharyngotympanic tube L round window
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
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