sound wave will slow down as it travels from fresh water to salt water. c. The sound wave will remain the same. d. The sound wave will neither slow down nor speed up. 8. What part of the ear vibrates as sound waves enter the ear? a. Cochlea b. Ossicles c. Ear drum d. Organ of Corti 9. The ear detects sound waves. Trace the path taken by sound waves as it enters the ear. a. Outer ear – Ear canal –
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Anatomy and Functions of the Middle Ear The middle ear contains many important parts that necessary for hearing sounds. The middle ear consists of the structures enclosed in a space right behind the eardrum. They are the tympanic membrane or eardrum. The tympanic membrane is a thin membrane shaped like a drum that separates the outer ear from the middle ear. Next is a chain of three ossicles‚ or very small bones. The chain begins with the malleus‚ which is connected to the center of the tympanic
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Test 01 - Introduction Receptor cells use chemical transmitters to communicate with relay cells or afferent nerve fibers. In all sensory systems‚ accessory structures modify‚ in some way‚ the stimulus going to the receptor surface. Receptors are electrically polarized cells and therefore have a resting membrane potential. Stimuli produce‚ in the appropriate receptors‚ a change in the electrical properties that is known as the receptor or generator potential. The two ways in which sensory stimuli
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Perception of Sound Hearing allows us to do our everyday activities and improves our lives. It enables us to communicate‚ socialize‚ and interact in our environment. Good hearing also helps to keep us safe‚ warning us of dangers or alerting us to someone else’s distress. Hearing is necessary for us to be able to participate in life more fully. Our hearing provides us with a huge source of information; some of it is known to us and some we don’t even notice but when combined‚ this information gives
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transmitted from the malleus to the incus and then to the stapes. Together the three bones increase the pressure which in turn pushes the membrane of the oval window in and out. This movement sets up fluid pressure waves in the perilymph of the cochlea. The bulging of the oval window then pushes on the perilymph of the scala vestibuli. From here the pressure waves are transmitted from the scala vestibuli to the scala tympani and then eventually finds its way to the round window. This causes the
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strict sense‚ inner ear is the biological gyroscopes for sense of balance. EQUILIBRIUM * Hair cells in the vestibular membrane or semicircular canals of the inner ear are receptors for balancing. Vestibular sacs which connect the canals with the cochlea are substances that move when the head rotates or tilts. * Head movements stimulates the fore cited receptors that are transmitted to the regions of the brain to support the body position & maintain body balance. EQUILIBRIUM : VESTIBULAR
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CHAPTER 4 – SENSATION AND PERCEPTION I. SENSORY AWARENESS * Sensation is the awareness or a mental process which is aroused due to the stimulation of the senses. * The activation of a sense organ using physical energy that processes the receiving of stimulus from the external environment. A. Stimulus – anything that arouses a sense organ to activity. B. Receptor organs – a highly specialized part of the body selectively sensitive to a definite stimulus. C. Sensory receptors
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NEURAL CONTROL AND COORDINATION CHAPTER 21 NEURAL CONTROL COORDINATION 21.1 Neural System 21.2 Human Neural System 21.3 Neuron as Structural and Functional Unit of Neural System 21.4 Central Neural System 21.5 Reflex Action and Reflex Arc 21.6 Sensory Reception and Processing 315 AND As you know‚ the functions of the organs/organ systems in our body must be coordinated to maintain homeostasis. Coordination is the process through which two or more organs interact and
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Sensation: Intro Sensation is the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment. Perception is the process of organizing and interpreting sensory information enabling us to recognize meaningful objects and events. Bottom-up processing is the analysis that begins with the sense receptors and works up to the brain’s integration of sensory information. Top-down processing is information processing guided by higher-level
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information. The occipital lobe will process/interpret/perceive the sense information from the soldier’s eyes to recognize possible threats. Basilar Membrane- The basilar membrane within the cochlea of the inner ear is a stiff structural element that separates two liquid-filled tubes that run along the coil of the cochlea. As a base for the sensory cells of hearing‚ the basilar membrane allows the soldier to hear gunshots or other potential threats to his camp. Olfaction- Olfaction is the sense of smell
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