The ear and hearing and balance anatomy pdf file

Hair cells slightly polarized at rest, causing a resting. Every structure of the ear has their own functions and are very important. Sound waves travel down this canal to the tympanic membrane, a thin sheet of connective tissue also known as the eardrum. The outer ear consists of the auricle, the ear canal as. The ear organs of hearing and balance is a useful chart showing the anatomy of the ear. Anatomy, physiology, and disorders of the auditory system second edition by aage r. Ppt the human ear and hearing powerpoint presentation.

Anatomy and physiology of the ear stanford childrens health. See more ideas about anatomy and physiology, physiology and anatomy. The middle ear houses three ossicles, the malleus, incus and stapes and is connected to the back of the nose by the eustachian tube. Both structures funnel sound waves towards the ear drum or tympanic. From the eardrum, these sound vibrations pass to the bones in the middle ear then to the cochlea which causes fluid and tiny hair cells in the cochlea to move. Anatomical chart the ear organs of hearing and balance. Sound waves enter your outer ear and travel through your ear canal to the middle ear. Hearing loss from problems with the outer andor middle ear are known as a conductive hearing loss. Human ear, organ of hearing and equilibrium that detects and analyzes sound by transduction and maintains the sense of balance. Sense of hearing and balance anatomy hearing involves structures that are formed in the inner ear, the middle ear, and the outer ear. Their hearing for internal noises like a heartbeat and the grating of knee joints is much better than normal. This handout will explain the parts of the ear and how we hear.

The overall anatomical structure of the human ear and its division in. The organ of hearing, the ear, consists of three major regions, shown in figure 1. The adjacent locations of the senses of hearing and balance result in. The outer ear is composed of the pinna, or ear lobe, and the external auditory canal. Many of the structures are depicted with close up detailed illustrations. The sense of hearing is sensitive to the sound stimuli. Since the outer ear is the only visible portion of the ear in most animals, the word ear often refers to the external part alone. The ear organs of hearing and balance anatomical chart anatomy models and anatomical charts. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The vestibular system is the sensory apparatus of the inner ear that helps the body maintain its postural equilibrium. Anatomy and physiology of the ear health encyclopedia. The cochlea, which is the hearing portion, and the semicircular canals is the balance portion. Next to the middle ear in the bone of the skull is a small compartment which contains the hearing and balance apparatus known as the inner ear.

A hearing loss can happen when any part of the ear or auditory hearing system is not working in the usual way. The anatomy of the ear can be a little confusing, especially since the ear is responsible not only for hearing, but also for balance there are three components to the ear. The inner ear contains structures specifically related to balance and equilibrium. All of the major parts of the ear are illustrated and labeled on the central image. Anatomy of the ear and physiology of hearing basics. Guided lecture notes assessment and management of patients with hearing and balance disorders learning objective 1. Physiology of hearing and balancestatecollapsed to show the template collapsed, i. Nci definition nci a sense organ needed for the detection of sound and for establishing balance. Pdf basic anatomy of the hearing system researchgate. Description and pictures of the structures of the ear, and diseases and conditions that affect hearing and. Select the terms from column b that apply to the column a descriptions. The middle ear is where chronic ear disease usually occurs. It is in continuity with the vestibular labyrinth or organ of balance which in technical terms acts as both a linear and angular accelerometer, thus enabling the brain. Basic anatomy of the hearing system 283 bottom of the pinna, below the intertragal notch, there is a large soft flap called the lobule ear lobe.

Historical aspects of inner ear anatomy and biology that underlie the design of. The inner ear cochlea hearing vestibular system balance 4. There are two sets of end organs in the inner ear, or labyrinth. The lobule does not contain cartilage and is entirely made of fat and skin. Note the role of the inner ear in balance and equilibrium. The more you will learn about how it works, the more you may think how can it work at all.

The large colorful and detailed central image shows the anatomy of and the structures that make up the ear. The middle ear cleft is made up of five anatomical parts. The outer external ear consists of the auricle pinna, a flap of elastic cartilage that protrudes from the head, and the external auditory canal meatus, a tube that enters the temporal bone. The pinna and external auditory canal form the outer ear, which is separated from the middle ear by the tympanic membrane. The ear is the organ of hearing and, in mammals, balance. The outer ear consists of the pinna and the ear canal. Anatomy and physiology of the external, middle and inner ear. In this section of the ear, you can find the cochlea. Human ear and physiology of hearing linkedin slideshare. Describe the anatomy and functions of the external, middle, and inner ear. Sound waves enter the ear canal and vibrate against the tympanic membrane. In mammals, the ear is usually described as having three partsthe outer ear, the middle ear and the inner ear. The information furnished by the vestibular system is also essential for coordinating the position of the head and the movement of the eyes. The ear organs of hearing and balance also textually explains and illustrates how we hear from the ear to the brain the physiology of sound.

The human ear and hearing 1 the human ear and hearing 2 initial experiments on the frequency sensitivity of the human ear. Mar 16, 2019 the system for human hearing and balance is a very complex design. Historical aspects of inner ear anatomy and biology that underlie. We hear with our ears and we listen with our brains. All three are involved in hearing but only the inner ear is responsible for balance. This chapter discusses the anatomy and physiology of the inner ear, with emphasis on the vestibular organs and functions, and the vestibular pathways in the central nervous system. Our anatomy experts have chosen the best anatomy models and. The inner ear is made up of the cochlea needed for hearing and the vestibular apparatus required for balance. We follow sounds as they work there way into the ear where they are registered and. During embryonic development, the inner ear begins developing at age 4 weeks gestational and is complete at 32 weeks gestational. Basic average mean dimensions of the human ear pinna. Physiology of hearing and balancestateexpanded to show the template expanded, i. Its connected to the back of the nose by the eustachian tube, which allows fluid and mucus to drain out of the air and lets air enter behind the ear drum. The cochlea is the sense organ of hearing and balance.

Questions are in easy to grade format, matching, multiple choice. How hearing works anatomy of the ear listen 2 life. The external ear is the auricle, or pinna, a cartilagesupported fleshy flap that helps to funnel sound waves into the external auditory canal. Anatomy of ear ear is divided into three main regions external ear middle ear inner ear 3. This part of the ear includes the hearing and balance organs. Our senses of hearing and balance have evolved over more than 300 million. Organs of hearing and balance anatomy poster ent poster illustrates ear anatomy, explaining and showing the physiology of sound how we hear. Sound waves pass from the outer ear and move through the air toward the eardrum which vibrates with sound. Differentiate hearing conduction by air and bone transmission.