15. Malieus (hammer shape), incus (anvil shape) and stapes (stirrup shape) are present in
(a) Internal ear of frog (b) Middle ear of human (c) Eye of rabbit (d) Eye of frog
Answers
Answer:
(b) Middle ear of human
Explanation:
The human ear structures are classically divided into three parts: the external ear, middle ear, and inner ear. The middle ear consists of the tympanic membrane and the bony ossicles called the malleus, incus, and stapes. These three ossicles connect the tympanic membrane to the inner ear allowing for the transmission of sound waves.
The malleus is the first ossicle and attaches to and moves with the tympanic membrane. It is divided into four parts: the head, neck, short process, and handle. The handle of the malleus attaches loosely to the tympanic membrane. The head of the malleus attaches to the incus and forms the incudo-malleolar joint. The incus is the second ossicle and is divided into the body, short process, and long process. The incus connects with the stapes and forms the incudo-stapedial joint. The stapes is the third ossicle and consists of the head, legs, and footplate. It is known as the smallest bone within the human body. The stapes articulates with the oval window of the inner ear.
The main function of the middle ear is to transmit the sound waves from the external environment to the inner ear. The sound waves initially make contact with the external ear and tympanic membrane. The tympanic membrane vibrates, leading to the movement of the chain of ossicles. The attachment of the footplate of the stapes to the oval window allows the displacement of fluid within the inner ear.
Answer:
Middle ear of human
Explanation:
Because The middle ear cavity in mammals characteristically contains a chain of three little bones or ear ossicles extending between the tympanic membrane and the fenestra ovalis. These are called from outside as the malleus (hammer), incus (anvil) and stapes (stirrup), so named because of their characteristic shapes.
So, the right answer is middle ear of human.