2 SensesSee separate FlexArt PowerPoint slides for all figures and tables pre-inserted into PowerPoint without notes2
3 Points to ponder What are sensory receptors? How do we detect the sense of taste and smell?What is the anatomy of the eye?How do we focus images?What are some eye abnormalities?What is the anatomy of the ear?Which parts function in balance and which parts function in hearing?
4 14.1 Overview of Sensory Receptors and Sensations Sensory receptors – dendrites specialized to detect certain types of stimuli___________: detect stimuli from outside the body (e.g., taste, hearing, vision)___________: receive stimuli from inside the body (e.g., change in blood pressure)
5 Types of sensory receptors 14.1 Overview of Sensory Receptors and SensationsTypes of sensory receptorsChemoreceptors – respond to nearby chemicals_____________ (pain receptors) – chemoreceptors that respond to chemicals released by damaged tissue_____________ – respond to light energyMechanoreceptors – respond to mechanical forces such as pressure______________ – stimulated by temperature changes
6 Senses and the receptors involved 14.1 Overview of Sensory Receptors and SensationsSenses and the receptors involved
7 How does sensation occur? 14.1 Overview of Sensory Receptors and SensationsHow does sensation occur?Sensory receptors respond to environmental stimuli.Nerve impulses travel to the cerebral cortex and sensation (conscious perception of stimuli) occurs.____________, decrease in stimulus response, can occur with repetitive stimuli (i.e., odor).
11 14.3 Senses of Taste and Smell Taste receptors4,000 taste buds are located primarily on the tongue of adult humans.We have 5 main types of taste receptors: sweet, sour, salty, bitter, and umami (savory).80-90% of what we perceive as taste is actually due to the sense of ______.
14 Anatomy of the eye Made of 3 layers/coats 14.4 Sense of VisionAnatomy of the eyeMade of 3 layers/coats______: mostly white and fibrous except the cornea______: darkly-pigmented vascular layer______: inner layer containing photoreceptors14
15 Anatomy of the eye 2 compartments 14.4 Sense of VisionAnatomy of the eye2 compartmentsAnterior compartment: between the cornea and lens; filled with a clear fluid called _________ humorPosterior compartment: most of the eye, behind the lens; contains a gelatinous material called ________ humor15