BIO 162 Lecture Notes - Lecture 11: Myocyte, Olfactory Bulb, Cardiac Muscle
Document Summary
Bio 162 nervous system lecture notes: mechanoreception hearing, outer ear a. i. a. ii. All those things are there to funnel sound into your ear drums. Ear canal is part of outer ear: middle ear. Main structure is the cochlea which contains the auditory nerves that send signals using action potential: sound waves act by hitting the tympanic membrane (eardrum) d. i. d. ii. Ear ossicles tiny bones in ear start vibrating back and forth d. ii. 1. d. ii. 2. This turns into fluid waves in the cochlea potassium rich fluid d. iii. Potassium is how the nerves get signals because the: photoreception: vision receptors bend open, each eye has own lens and receptor cells (compound eyes mostly in insects, eye anatomy b. i. b. ii. Pupil is a hole and is surrounded by the iris b. ii. 1. Iris can contract or relax which allows it to control light coming in.
