PSYC 106 Chapter Notes - Chapter 7: Saccule, Solitary Tract, Subcutaneous Tissue
Document Summary
Chapter 7 notes- audition, body senses, and chemical senses. Sounds produced by objects that vibrate and send molecules in air into motion: alternating condensing and relaxing produces outward travelling sound waves which reach receptor cells in ears and is perceived as sound. 3 qualities of sound: pitch, loudness, and timbre: pitch- determined by frequency of wave, loudness- corresponds to intensity/amplitude of wave, timbre- corresponds to complexity, mixture of frequencies. Anatomy of ear: outer ear: sound funneled by pinna, travels through ear canal to the tympanic membrane (eardrum, middle ear: ossicles, 3 small bones set into vibration by eardrum. Stapes presses against oval window: inner ear: sound hen reaches cochlea- fluid filled structure that contains receptors. Ossicles use mechanical force to effectively transmit air disturbances into liquid medium of cochlea. Organ of corti- receptive organ in cochlea. Contains basilar and tectorial membranes and hair cells. Hair cells anchored to basilar membrane via deiter"s cells.
