Figure 25.1 Anatomy of the ear.

Slides:



Advertisements
Similar presentations
The Ear: Hearing and Balance
Advertisements

The Vestibule The utricle extends into the _ These sacs: – House ___________________________________ called maculae – Respond to _______________________________.
Ear Anatomy-Histology Correlate
The Vestibule The utricle extends into the _ These sacs: – House ___________________________________ called maculae – Respond to _______________________________.
Sensory System Ear: Sound & Balance.
A&P Unit 4 Lecture 6A.
Anatomy of the Ear Region
Organ of balance and hearing
Sense Organs II: The Ear
Figure The Anatomy of the Ear
The Ear.
1 Hole’s Human Anatomy and Physiology Twelfth Edition Shier  Butler  Lewis Chapter 12 Nervous System III: Senses Copyright © The McGraw-Hill Companies,
Special Sensory Reception
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Fundamentals of Anatomy & Physiology SIXTH EDITION Frederic H. Martini PowerPoint.
SPECIAL SENSES: HEARING & EQUILIBRIUM
Anatomy & Physiology The Ear A. Structure of the Ear 1.Outer ear 2.Middle ear 3.Inner ear.
CHAPTER # 15(c) THE SPECIAL SENSES.
Human Anatomy & Physiology FIFTH EDITION Elaine N. Marieb PowerPoint ® Lecture Slide Presentation by Vince Austin Copyright © 2003 Pearson Education, Inc.
SMELL, TASTE, AND HEARING
Bio 449Lecture 11 - Sensory Physiology IIISep. 20, 2010 Somatosensory system (conclusion) Equilibrium Audition - the ear Structure Function Terms to Know.
© 2012 Pearson Education, Inc. Figure The Anatomy of the Ear External Ear Elastic cartilages Auricle External acoustic meatus Tympanic membrane Tympanic.
Chapter 15 B The Ear.  The External Ear  Auricle  Surrounds entrance to external acoustic meatus  Protects opening of canal  Provides directional.
Vestibular Apparatus and Equilibrium
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Human Anatomy & Physiology, Sixth Edition Elaine N. Marieb PowerPoint ® Lecture.
EAR. Outer Ear Auricle: Auricle: Layer of skin over cartilage framework. Lobule = fibrous fatty tissue with no cartilage. Sensory innervation: Sensory.
EAR.
ANATOMY OF THE EAR. Pinna External Auditory Meatus.
Ears & Hearing
THE EAR. External Ear Pinna External auditory meatus.
OUTER EAR Structures – Pinna – External Auditory Canal – Tympanic Membrane Boundary between outer and middle ear Transfers sound vibrations to bones of.
Sense organs. The Audiovestibular organ 1.Taste buds 2.Audiovestibular nalizator 3.Audiovestibular organ 4.External ear 5.Middle ear 6.Internal ear: a)
Hearing.
1 ANATOMY & PHYSIOLOGY I BIO 211: Dr. Lawrence G. Altman Some illustrations are courtesy of McGraw-Hill. The EAR Part 1 of 2 SPECIAL.
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Chapter 15 The Special Senses The Ear.
The Ear. External Ear Structures & Functions Pinna—Collects sound waves and channels them into the external auditory canal. External Auditory Canal—Directs.
Anatomy of the Ear Three Main Sections
Ear Ossicles Malleus, incus, and stapes Transmit vibrations to the oval window Dampened by the tensor tympani and stapedius muscles.
Special Senses Hearing Reading: Chapter 10. C. HEARING 1) Outer ear a) auricle = pinna, why is this structure important? b) external auditory meatus =
Sense of Hearing and Equilibrium
8 24 slides 1 hour & 30 min Special Senses.
Objectives 1-Describe anatomy of middle ear
Special Senses.
The Ear-Hearing and Balance
Chapter 19 Special Senses
Hearing Reading: Chapter 10
The Ear, Hearing and Balance
8 Special Senses.
Events in the Stimulation
Otic; Vestibular; Auditory
Special Senses The Ear.
Auditory.
Special Senses Ear.
THE EAR: HEARING AND BALANCE
The Auditory Pathway This graphic depicts the events in the stimulation of auditory receptors, from channeling sound waves into the external ear and onto.
CH 15 continued … Part-C EAR
The Human Ear.
Human Anatomy & Physiology I
Special Senses: The Ear
Mentor: A. Žmegač Horvat
Special Senses.
Special Senses.
Special Senses.
Lab Ex. 32 The Ear & Hearing By Michael J. Harman 
Cochlea Hearing.
Anatomy of the Ear.
The Special Senses Hearing
Special Senses.
Human Anatomy and Physiology I
The ear.
Anatomy of the ear Dr. Mohammed Abuelnor.
Presentation transcript:

Figure 25.1 Anatomy of the ear. External ear Middle ear Internal ear (labyrinth) Auricle (pinna) Malleus (hammer) Incus (anvil) Auditory ossicles Helix Stapes (stirrup) Lobule External acoustic meatus Tympanic membrane Pharyngotympanic (auditory) tube

Superior vestibular ganglion Figure 25.2 Internal ear. Temporal bone Semicircular ducts in semicircular canals Facial nerve Vestibular nerve Anterior Superior vestibular ganglion Posterior Lateral Inferior vestibular ganglion Cochlear nerve Cristae ampullares in the membranous ampullae Maculae Spinal organ Utricle in vestibule Cochlear duct in cochlea Saccule in vestibule Stapes in oval window Round window 2

Figure 25.3 Anatomy of the cochlea. Inner hair cell Vestibular membrane Osseous spinal lamina Tectorial membrane Tectorial membrane Afferent nerve fiber Spiral ganglion Hairs (stereocilia) Cochlear duct (scala media; contains endolymph) Scala vestibuli (contains perilymph) Outer hair cells Supporting cells Stria vascularis Fibers of cochlear nerve Spiral organ Scala tympani (contains perilymph) Basilar membrane 3

Figure 25.5 Resonance of the basilar membrane. Stapes Fibers of cochlear nerve Scala vestibuli Oval window Perilymph Round window Scala tympani Basilar membrane Cochlear duct Basilar membrane Base Apex Relative lengths of basilar fibers within different regions membrane 500 Hz 4000 Hz 20,000 Hz Hz 20,000 (High notes) Hz 2000 Hz 200 Hz 20 (Low notes) 4

Figure 25.7 Structure and function of the crista ampullaris. Ampullary cupula Endolymph Hair bundle (kinocilium plus stereocilia) Hair cell Crista ampullaris Membranous labyrinth Supporting cell Fibers of vestibular nerve Flow of endolymph Direction of body movement 5

Figure 25.8 Scanning electron micrograph of a crista ampullaris (14×). Ampullary cupula 6