explain human ear in short (for 5 marks)
Answers
Explanation:
HEY MATE......
➡️The ear is a sensitive organ of the human body.
➡️ It is mainly concerned with detecting, transmitting and transducing sound.
➡️Maintaining a sense of balance is another important function performed by the human ear.
Structure of Ear
Structure of EarThe human ear consists of three parts:
➡️External ear
➡️Middle ear
➡️Internal ear
The human ear parts are explained below:
➡️External Ear⤵️
The external ear is further divided into the following parts:
➡️Auricle (Pinna)⤵️
The auricle comprses a thin plate of elastic cartilage covered by a layer of skin. It consists of funnel-like curves that collect sound waves and transmits them to the middle ear.
Middle Ear:
The middle ear comprises the following parts:
➡️Tympanic Cavity⤵️
It is a narrow air-filled cavity separated from the external ear by tympanic membrane and from inner ear by the bony wall. The tympanic cavity has an auditory tube known as the eustachian tube in its anterior wall.
➡️Eustachian Tube⤵️
The eustachian tube is a 4cm long tube that equalizes air pressure on either side of the tympanic membrane. It connects the tympanic cavity with the nasopharynx.
➡️Ear Ossicles⤵️
These are responsible for transmitting sound waves from the eardrum to the middle ear.
There are three ear ossicles in the human ear:
Stapes: It is the smallest ossicle and also the smallest bone in the human body.
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