BIO2242 Lecture Notes - Lecture 13: Ommatidium, Tympanal Organ, Tectorial Membrane
Document Summary
When you perceive a leaf to be green your eyes detect mostly. The typical flavor of onions is mostly derived from the activity of: Hearing is the perception of propagated sound waves. They are received by vibrating membranes that respond to oscillations in pressure on that membrane. Hearing is by tympanic organs, such as eardrums or membrane-like structures. Those insects that have tympanic organs also produce sounds for communication. A1 is very sensitive is detects the echolocation sounds of the bats. A2 is tune to much higher levels of sounds hence less sensitive. It starts firing when the intensity is so high, where the bat is very close. Male mosquitoes use it to detect the sounds female mosquitoes make. Outer ear = ear lobs, pinna, tympanic membrane. Outer and inner hair cells are moved by the tectorial membrane. Fluid moves hair cells of organ of corti depending on the frequency of sound waves.
