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SPECIAL SENSES: HEARING & EQUILIBRIUM

SPECIAL SENSES: HEARING & EQUILIBRIUM. MARTINI, FUNDAMENTALS OF ANATOMY & PHYSIOLOGY, 7 TH EDITION, CHAPTER # 17. PRESENTATION CREATED BY DR. ALFONSO A. PINO. COLLABORATOR: PROFESSOR NIDIA ROMER. NOTE:. THIS IS A STUDY GUIDE , NOT AN ALL INCLUSIVE REVIEW.

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SPECIAL SENSES: HEARING & EQUILIBRIUM

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  1. SPECIAL SENSES: HEARING & EQUILIBRIUM MARTINI, FUNDAMENTALS OF ANATOMY & PHYSIOLOGY, 7TH EDITION, CHAPTER # 17

  2. PRESENTATION CREATED BY DR. ALFONSO A. PINO.COLLABORATOR:PROFESSOR NIDIA ROMER. ALFONSO A. PINO. MD.

  3. NOTE: • THIS IS A STUDY GUIDE, NOT AN ALL INCLUSIVE REVIEW. • THERE MIGHT BE THINGS NOT COVERED BY THIS STUDY GUIDE THAT MIGHT BEASKED IN YOUR PRACTICUMS / QUIZZES. • STUDENTS ARE RESPONSIBLE FOR READING THEIR TEXBOOK (S) AND FOR ALL THE MATERIAL COVERED DURING THE LABORATORY PERIOD, AS PER THE COURSE SYLLABUS ALFONSO A. PINO. MD.

  4. OBJECTIVES • Identifying the structures of the ear and describe their functions. ALFONSO A. PINO. MD.

  5. EXTERNAL EAR MIDDLE EAR INNER, OR INTERNAL EAR ALFONSO A. PINO. MD.

  6. EXTERNAL EAR • PINNA OR AURICLE- TO CAPTURE THE SOUND WAVES • EXTERNAL AUDITORY CANAL-TO FOCUS & DIRECT THE • SOUND WAVES • CERUMINOUS GLANDS (LINING THE EXTERNAL • AUDITORY CANAL) • F- TO PRODUCE WAXY MATERIAL • TO AVOID FOREIGN MATTERS TO GO INSIDE • TYMPANIC MEMBRANE- TO TRANSMIT THE SOUND • WAVES ALFONSO A. PINO. MD.

  7. ALFONSO A. PINO. MD.

  8. MIDDLE EAR • OSSICLES (3 LITTLE BONES)- MALLEUS, INCUS & STAPES • F- TO TRANSMIT THE SOUND WAVES • PHARYNGOTYMPANIC OR AUDITORY OR EUSTACHIAN • TUBE • F- TO EQUALIZE THE PRESSURE INSIDE & OUTSIDE THE • TYMPANIC MEMBRANE ALFONSO A. PINO. MD.

  9. ALFONSO A. PINO. MD.

  10. ALFONSO A. PINO. MD.

  11. INNER OR INTERNAL EAR • THE BONY LABYRINTH -IT HAS 3 PARTS- VESTIBULE, • SEMICIRCULAR CANAL & COCHLEA • IT SURROUNDS THE MEMBRANOUSLABYRINTH • IT CONTAINS THE PERILYMPH • PERILYMPH (PINK IN MODEL)-TO TRANSMIT SOUND • WAVES • MEMBRANOUS LABYRINTH (GREY IN MODEL)- IT • CONTAINS THE ENDOLYMPH • ENDOLYMPH- TO TRANSMIT SOUND WAVES ALFONSO A. PINO. MD.

  12. ALFONSO A. PINO. MD.

  13. VESTIBULE- BALANCE & EQUILIBRIUM • IT CONTAINS THE UTRICLE & SACULE • UTRICLE & SACULE- CONTAIN THEMACULA • F- SENSATIONS OF GRAVITY & LINEAR • ACCELERATION • SEMICIRCULAR CANALS- SENSE OF DYNAMIC • BALANCE • AMPULLA- SWOLLEN AREA AT THE END OF THE • SEMICIRCULAR CANAL THAT CONTAINS THE • CRISTA • CRISTA- CONTAINS SENSORY RECEPTORS FOR • DYNAMIC BALANCE ALFONSO A. PINO. MD.

  14. ALFONSO A. PINO. MD.

  15. INNER EAR: COCHLEA • IT CONTAINS RECEPTORS FOR HEARING • IT HAS 3 DUCTS OR CHAMBERS • VESTIBULAR DUCT (SCALA VESTIBULI)-PINK IN MODEL • UPPER DUCT THAT CONTAIN PERILYMPH • COCHLEAR DUCT (SCALA MEDIA)-BLUE IN MODEL • MIDDLE DUCT THAT CONTAINS ENDOLYMPH • TYMPANIC DUCT (SCALA TYMPANI)- GREEN IN MODEL • LOWER DUCT THAT CONTAINS PERILYMPH • OVAL WINDOW (AT THE BASE OF THE STAPES)- • F- TO TRANSMIT SOUND TO THE INNER EAR • ROUND WINDOW- IT SEPARATES THE PERILYMPH OF THE • COCHLEAR DUCT FROM AIR SPACES OF THE MIDDLE E F- IT RELEASES EXCESS PRESSURE

  16. ALFONSO A. PINO. MD.

  17. INNER EAR: THE ORGAN OF CORTI • 3 MEMBRANES AROUND THE ORGAN OF CORTI • VESTIBULAR MEMBRANE (UPPER ONE)-TO SEPARATE • THE COCHLEAR DUCT FROM SCALA VESTIBULI • TECTORIAL MEMBRANE (IN THE MIDDLE OF THE • COCHLEAR DUCT)- IT STIMULATES HAIR CELLS • BASILAR MEMBRANE (BOTTOM ONE)-TO TRANSMIT • THE VIBRATION TO THE HAIR CELLS • ORGAN OF CORTI- IT CONTAINS THE HAIR CELLS THAT • PRODUCE THE HEARING SIGNAL ALFONSO A. PINO. MD.

  18. ALFONSO A. PINO. MD.

  19. ALFONSO A. PINO. MD.

  20. REMEMBER!GO TO THE TUTORING ROMMAND PRACTICE WITH MODELS.ROOM 3326. ALFONSO A. PINO. MD.

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