PS102 Lecture Notes - Lecture 7: Olfactory Receptor, Middle Ear, Parietal Lobe
Document Summary
Ie. punctured eardrum, loss of function of bones in middle ear. Some sort of occlusion or break in the various process by which sound is transmitted through the inner ear. Wax buildup, ear drum damage or water in ear can cause temporary deafness. Exposure to loud sounds can damage hair cells. Odorants: airborne chemicals that are detected as odours. Olfactory receptor neurons: the receptor cell binds odorant molecules into a neutral impulse (transduction) and send the impulse to the brain. Have receptor sites that resemble neurotransmitter binding site. Taste buds: bind the food molecules that dissolve our saliva -> turn the information into a neural impulse -> the brain (medulla > thalamus > patella lobe > orbitofrontal cortex) Five taste receptors: sweet, sour, bitter, salt, umami (savoury) - the taste of monosodium glutamate (msg) Chemical receptor = taste buds/ papillae (consist of several receptor cells) Top of the tongue( with bumps) is papillae.
