Somatic and Special Senses
Introduction
Sensory Receptors - detect environmental changes and trigger nerve impulses
What is synesthesia?
General vs Special Senses
Receptors and Sensations
1. Chemoreceptors
2. Pain receptors
3. Thermoreceptors
4. Mechanoreceptors
5. Photoreceptors
Sensation = feeling that occurs when a brain interprets a sensory impulse
Projection = process where the cerebrum causes a feeling to stem from a source (eyes, ears)
Somatic Senses
Exteroreceptive
Visceroreceptive
Proprioceptive
Sense of Pain
Visceral
Acute
Chronic
Special Senses
Smell (olfactory)
Taste (gustatory)
Hearing and Equilibrium:
Sight
Sense of Smell
Olfactory organs contain olfactory receptors
Sense of Taste
Taste buds = Papillae
What are the five types of taste?
Why does cilantro taste like soap to some people?
Sense of Hearing
External Ear = Auricle (pinna) - outer ear | External Auditory Meatus | Auriculares muscle
Middle Ear (tympanic cavity)
Eardrum, also called tympanum
What are the 3 auditory ossicles? (identify below)
Auditory Tube (eustachian tube) -
Inner Ear
Labyrinth - communicating chambers and tubes
Osseous Labyrinth and Membranous Labyrinth
........Perilymph and Endolymph (fluids within the labyrinth)
Semicircular Canals - sense of equilibrium
Cochlea - sense or hearing
Organ of Corti - hearing receptors, hair cells detect vibrations
Why do we lose are hearing as we age?
What is a cochlear implant?