Sense Organs [download]

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traditionally four basic qualitiesof taste: sweetness bitterness sourness saltiness fifth basic taste umami (“deliciousness”) –non-salty sensations evoked by someamino acids – glutamateGustatory apparatus<strong>Sense</strong> organsNB: about 50 fibers innervate a single taste bud!NB:Prof. Dr. Nikolai Lazarov 6
the sense of smell (olfaction): receptors are part of the olfactory epitheliumolfactory mucosa – 3 cell types: cell bodies of olfactory receptor cells(40 million in human olfactory epithelium)Olfactory apparatus supporting cells – columnar cells basal cells – form new receptor neurons (4-8 weeks) olfactory (Bowman’s) glands – in lamina propria<strong>Sense</strong> organsNB: The smell receptors are sensitive to seven types of sensation:NB:The smell receptors are sensitive tocamphor, musk, flower, mint, ether, acrid, or putrid!Prof. Dr. Nikolai Lazarov 7
Page 1: Sense Organs1. Sense organs - class
Page 4 and 5: 3 main groups - Sherrington, 1906:
Page 8 and 9: Olfactory neuroepitheliumnon-myelin
Page 10 and 11: consists of: axons of the mitral an
Page 12 and 13: The eye - some amazing facts:Human
Page 14 and 15: EyeballHuman eye Eyeball - the peri
Page 16 and 17: Cornea - “kerat-“,, Gr. κέρ
Page 18 and 19: Human eyeVascular tunic (uveal trac
Page 20 and 21: RetinaRetina - Lat. rete, net: appr
Page 22 and 23: Photoreceptor cells neurons capable
Page 24 and 25: Ganglion cellsreceive visual inform
Page 26 and 27: Inverted retina ‘inverted’ arra
Page 28 and 29: Human eyeAqueous chambers and humor
Page 30 and 31: lens: transparent, biconvex body st
Page 32 and 33: extraocular muscles: elevator of th
Page 34 and 35: eyelids, palpebrae: thin, movable f
Page 36 and 37: lacrimal gland lacrimal canaliculi
Page 38 and 39: Lacrimal pathways lacrimal canalicu
Page 40 and 41: The peripheral auditory apparatus,
Page 42 and 43: pinna - Lat.Lat. pinna, , a feather
Page 44 and 45: a structure of the sound conduction
Page 46 and 47: volume - 1.5 cm 3 , air-filleddiame
Page 48 and 49: Human earAuditory ossicles, ossicul
Page 50 and 51: vestibule, vestibulum three semicir
Page 52 and 53: lateral semicircular canal (14 mm)
Page 54 and 55: Cochlear canal, canalis cochleariss
Page 56 and 57:
Human earVestibular labyrinth, laby
Page 58 and 59:
Statoreceptor spots:Vestibular syst
Page 60 and 61:
Cochlear duct, ductus cochlearis pa
Page 62 and 63:
Tectorial membrane,membrana tectori
Page 64 and 65:
Auditory pathwaysHuman ear I st neu
Page 66 and 67:
I st neuron -vestibular ganglion (o
Page 68:
Thank you…Prof. Dr. Nikolai Lazar
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Sense Organs [download]

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