Human ear and physiology of hearing linkedin slideshare. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The outer ear consists of the visible part of the ear or pinna, the external auditory canal meatus, and the tympanic membrane tympanum or eardrum. Power point and resources for looking at ear structure and function. It does this through a system of many parts, including. Webmds ear anatomy page provides a detailed image and definition of the ear as well as an overview of earrelated health problems. The outer ear consists of the visible portion called the. All three parts of the ear are important for detecting sound by working together to move sound from the outer part through the middle and into the inner part of the ear. Sound waves enter the ear canal and vibrate against the tympanic membrane. External auditory canal transmits sound waves from the pinna to the eardrum.
The outer ear is the pinna, and its function is to gather the sound waves like a funnel and transmit to the middle ear through the ear canal. The human ear, like that of other mammals, contains sense organs that serve two quite different functions. At the grossest level, the labyrinth or inner ear occurs in all vertebrates. Structure of the inner ear containing the saccule and utricle and important in sensing equilibrium. Pdf form and function of the mammalian inner ear researchgate. Sep 06, 2016 human ear structure and function we have just learnt how sound vibrations from a source propagate through the air and reach our ears. Structure and function of the mammalian middle ear. A condensed 1page reading provides a detailed overview of the main functions of the human ear, the division of the ear outer, middle, and inner ear, how sound waves are amplified using the tympanic membrane and middle ear bones, how sound waves.
Middle ear consists of ear ossicles malleus, incus, stapes, oval window, round window and inner opening of the eustachian tube. Ear drum membrane that sends sound waves to hammer 4. These middle ear bones mechanically amplify sound and compensate mismatched impedance. The outer ear consists of the pinna and the ear canal. Let us now discuss how our ears actually hear these sound vibrations. In mammals, the ear is usually described as having three partsthe outer ear, the middle ear and the inner ear.
Anatomically human ear mainly consists of 3 parts the outer part middle part inner part. The three divisions of the ear function to provide the sense of hearing. The pinna is the shelllike part of your external ear, and. Describe the changes that occur in the human eye for each of the following. Human ear structure and function we have just learnt how sound vibrations from a source propagate through the air and reach our ears. Learn about the ears function in the body and test and. The major functions of the ear are to maintain the balance and equilibrium of the body and to aid in hearing capabilities. This chapter will deal mainly with the ear, first its structure and then its function, for it is the ear that is mainly at risk from hazardous sounds. As a nonspecialist i would appreciate any feedback. The outer ear the pinna, also called the auricle, is part of the outer ear and the most visible portion figure 42. The ear can be broadly classified into three parts.
Structure of the ear printable 5th 7th grade teachervision. The middle ear contains the three auditory ossicles, malleus, incus and sta pes, which transmit sound vibrations between the tympanic. Learn about the ear s function in the body and test and. It sets three ossicle bones malleus, incus, stapes into motion, changing acoustic energy to mechanical energy. This chapter will deal mainly with the ear, first its structure and then its function, for it. The human ear and hearing 1 the human ear and hearing 2 initial experiments on the frequency sensitivity of the human ear. The external part of your ear consists of the pinna and ear lobe. Is a pigmented muscular structure consisting of an inner ring of circular muscle and an outer layer of radial muscle. The rat was chosen primarily because the gross structure of its middle ear. It channels the sound waves into the ear canal where it gets amplified from where the waves travel towards a membrane that vibrates. The pinna is a projecting elastic cartilage covered with skin. The ear is another extraordinary organ of the house of wonders, that is, the human body.
This action is passed on to the inner ear and the cochlea, a fluidfilled, spiralshaped structure that contains the spiral organ of corti, which is the receptor organ for hearing. Also has tasks on ear damage and improving hearing. Auditory ganglion cell densities are double land mammal averages 20004000mm. Anatomy of eye and ear structure, functions of human eye. May 25, 2014 power point and resources for looking at ear structure and function.
It is mainly concerned with detecting, transmitting and transducing sound. Bhanu prakash usmle, fmge and neet pg 20,017 views. The external ear, from the pinna or auricle, gathers sounds, which funnel through the external auditory canal. This quiz focuses on testing you on the middle ear, its structure and how it helps you to hear. Its function is to help control the amount of light entering the eye so that. Help maintain ossicles in proper position protect inner ear from excessive sound levels this protective reflex termed acoustic reflex. Middle ear is small chamber between tympanic membrane and inner ear. Displaying all worksheets related to structure and function of ear. Its most prominent outer ridge is called the helix. Inner ear consists of semicircular canals, utriculus, sacculus and cochlea. In odontocetes, two soft tissue channels conduct sound to the ear. Semicircular canal three fluidfilled structures of inner ear. Learn about the structure and function of the digestive system and how it works.
Outer ear structure function explanation pinna pinna is also called auricle or external ear, the flap like organ on either side of the head. The middle and inner parts of the ear are located in hollow cavities on either side of the head within the temporal bones of the skull. The middle ear is airfilled but has an extensible mucosa. Structure of the ear life sciences for all, grade 12, macmillan, page 74 part of the ear function pinna picks up sound waves from the air and guides them into the auditory canal. The internal ear is involved in two sensory function. It receive sound wave and amplify into appropriate magnitude. Ear anatomy structure and function of hearing hsls1a tpt. The middle ear is a difficult part of the journey for s.
Structure and function of the ear teaching resources. In this article, we will focus on the structure and anatomy of the human ear. Since the outer ear is the only visible portion of the ear in most animals, the word ear often refers to the external. Maintaining a sense of balance is another important function performed by the human ear. Sound waves hit the ear drum, causing it to vibrate like a drum. For example, the ear has three main portions, each having its own role to play. The outer ear consists of the auricle or pinna which happens to be the visible portion.
It is oval bluish grey membranous structure located on medial part of auditory meatus. Anatomy of eye and ear structure, functions of human eye and ear. How hearing works video process of hearing animation. Outer ear structure functionexplanation pinna pinna is also called auricle or external ear, the flap like organ on either side of the head. Ppt the human ear and hearing powerpoint presentation. Ear anatomy structure and function of hearing hsls1a. Outer ear pinnaauricle,auditory canal middle ear eardrum, ossicles, eustachian tube inner ear cochlea, vestibule and semicircular canal 3. The human ear consists of three partsthe outer ear, middle ear and inner ear. The pinna is made up of cartilage and covered by the skin. Jan 18, 2018 it is oval bluish grey membranous structure located on medial part of auditory meatus. Webmds ear anatomy page provides a detailed image and definition of the ear as well as an overview of ear related health problems. Mar 11, 2016 how hearing works video process of hearing animation.
Structure and function of ear definition, examples, diagrams. The structure of the ear can be broken down into three parts. In some animals they function to direct the pinna towards the direction of a sound source, in humans they are mostly redundant. Pdf the inner ear of mammals consists of the cochlea, which is involved with the sense of hearing. Pdf on feb 23, 2017, ghada m wageih felfela and others published ear. Made of cartilage and skin and shaped like a funnel. Ear structure and function in modern mammals biology department. The outer ear is called the pinna and is made of ridged cartilage covered by skin.
The outer ear consists of the visible portion called the auricle, or pinna, which projects from the side of. Human ear, organ of hearing and equilibrium that detects and analyzes sound by transduction and maintains the sense of balance. Let us have an overview of the structure and functions of the human ear. It vibrates, striking the anvil to carry on the sound 5. The inner ear is a complex structure that includes the cochlea the organ of hearing and the vestibular system the organ of balance. Cochlear component, vestibular component, semicircular component animation duration.
Outer ear consisting of pinna, auditory canal and ear drum. In this article we will discuss about the structure and functions of human ear. A 5page worksheet product designed to introduce middle school and early high school anatomy students to the structure and function of the human ear. Its major function is to capture and direct sound waves into the ear canal. Anatomically, the ear has three distinguishable parts. It is unclear whether the canals normally transmit sound to the ear. How does the ear work and what are its functions a plus topper. Physical examination of a horses ear infections of the ear and other ear disorders are less common in horses than in dogs or cats.
Skin incl desquamation, migration wax protection, migration hairs protection, expulsion cartilage perichondrium bone eardrum seals off middle ear pinna external auditory meatus drum tympanic membrane. It channels the sound waves into the ear canal where it gets amplified from. The human pinna is formed primarily of cartilage and is attached to the head by muscles and ligaments. Acoustic energy, in the form of sound waves, passes pinna, ear canal. Human ear is divided into three portions namely outer, middle, and inner ear.
The function of the outer ear is to collect sound waves and guide them to the tympanic membrane. Pinna outer portion of ear used to collect sound waves 2. How does the ear work and what are its functions a plus. Cochlear structures are hypertrophied and vestibular components are reduced. Trichechus manatus ears have two distinct components. Learn about the structure and function of the digestive system and how it. The ear catches sound waves and converts it into impulses, that the brain interprets, making it understandable and helps the human body differentiate between different sounds. Sounds reach the tympanum, or eardrum, in the middle ear. The outer ear comprises the earlobe, pinna, and the ear canal, all of which can be seen externally. The human ear facts and functions of the ear an organ of. It is spanned by a chain of three tiny bones the malleus hammer, incus anvil, and stapes stirrup, collectively called the auditory ossicles. Structure and functions of the ear explicated with.
Worksheets are ear structure and function, s2 topic 11 ear, teachers guide hearing grades 3 to 5, the ear basic anatomy physiology, the ear 22 may 20, 2 the anatomy and physiology of the ear and hearing, ear parts and functions work, ear anatomy activity. In mysticetes, bone and soft tissue conduction are likely. The outer ear, which includes the complex shell that is the visible ear we see on the outside of our heads. Just as the eyes turn certain wavelengths of light into images, so the ear turns certain wavelengths of vibration into sounds. Human ear is used to perceive sounds, and to maintain balance and position of the body. The ear canal of the outer ear is separated from the airfilled tympanic cavity of the middle ear by the eardrum. The lobule is the soft pliable part at its lower end composed of fibrous. Hence called as the stato acoustic organ of the body. A diagram and definitions about the structure of the human ear. The middle ear is a narrow airfilled cavity in the temporal bone. The ear is the organ of hearing and, in mammals, balance. So, lets try out this quiz to know whether you have at least basic knowledge.