Anatomy and Physiology for Emergency Care

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Presentation transcript:

Anatomy and Physiology for Emergency Care Chapter 10 Sensory Functions

Objectives Distinguish between the general senses and the special senses Identify the receptors for the general senses, and describe how they function Describe the receptors and processes involved in the sense of smell Discuss the receptors and processes involved in the sense of taste

Objectives Identify the parts of the eye and their functions Explain how we are able to see objects and distinguish colors Discuss how the central nervous system processes information related to vision Discuss the receptors and processes involved in the sense of equilibrium

Objectives Describe the parts of the ear and their roles in the process of hearing Describe the effects of aging on olfaction, tasting, vision, and hearing

General Senses Pain Temperature Touch, Pressure, and Position Tactile receptors Baroreceptors Proprioceptors

Tactile Receptors

Baroreceptors

General Senses Chemical Detection

General Senses Smell Olfactory pathways

General Senses Taste Taste pathways

General Senses Vision Accessory Structures of the Eye

General Senses Vision Anatomy of the Eye Fibrous tunic Vascular tunic Neural tunic Retinal organization Optic disc Chambers of the Eye Aqueous humor Lens Structure of the Lens Accommodation

Sectional Anatomy of the Eye

Optic Disc

Eye Chambers and Circulation of Aqueous Humor

Image Formation and Accommodation

Visual Abnormalities

General Senses Vision Visual Physiology Rods and cones Photoreceptor function Visual pigments

General Senses Vision The Visual Pathway

General Senses Equilibrium and Hearing Anatomy of the Ear External Ear Middle Ear Auditory Ossicles Inner Ear Receptor Function in the Inner Ear

Inner Ear

General Senses Equilibrium and Hearing Equilibrium Semicircular Ducts: Rotational Motion Vestibule: Gravity and Linear Acceleration Central Processing of Vestibular Sensations

Vestibular Complex

General Senses Hearing Cochlear Duct Hearing Process Auditory Pathways Organ of Corti Hearing Process Auditory Pathways Auditory Sensitivity

The Cochlea and Organ of Corti

Sound Reception and Hearing

Aging and the Senses Olfactory Sensitivity Gustatory Sensitivity Vision Hearing

Summary

Emergency Care Applications Chapter 10

Pain

Eye Emergencies Conjunctival Injuries Corneal Injuries Blunt Eye Trauma Penetrating Eye Trauma Chemical Injuries Ultraviolet Keratitis Acute Glaucoma

Eye Emergencies

Summary