i need to know what part the ears play in the bodies defence system, ive looked in every book and searched the internet bot still none the wiser.
i know its got somethin to do with the hairs in the ears but i need to write more than just those few words!!
please help as as soon as i know this i will be able to finish my report!!!!!
thank you!!
2007-01-28 06:18:38 · 11 answers · asked by serenbach 2 in Science & Mathematics ➔ Biology
your ears can help in the bodies defense system in a number ways
the hairs in the ears help prevent large objects getting too far inside your ears.
the hairs and a cicillic (?) motion help remove impurities absorbed or taken up by the wax within the ear which circulates out from the ear.
your ears are acoustic detectors which can locate sounds...thus enabling you to locate threats which are making noise and thus react to them.
Your ears can also adjust to possibly damaging sounds by dampening loud noises...adapting to that frequency protects the ear from damage.
2007-01-28 19:12:26 · answer #1 · answered by geordiekimbo 2 · 1⤊ 0⤋
The human ear as an organ, is composed of inner, outer and middle ear.
It is true that the inner (internal) ear contains hairs but they are not for defense. The inner ear is hollow, embedded in the temporal bone, the densest bone of the body. The hollow channels of the inner ear are filled with liquid, and contain a sensory epithelium that is studded with hair cells. The microscopic "hairs" of these cells are structural protein filaments that project out into the fluid. The hair cells are mechanoreceptors that release a chemical neurotransmitter when stimulated by sounds. A part from the hollow channels, the inner ear includes both the organ of hearing (the cochlea) and a sense organ that is attuned to the effects of both gravity and motion labyrinth or vestibular apparatus. The balance portion of the inner ear consists of three semi-circular canals and the vestibule.
In humans, and almost all vertebrates, the only visible portion of the ear is the outer ear, which is the most external portion of the ear and somehow protects the "real" organ (i.e. the inner ear). The outer ear includes the pinna (also called auricle), the ear canal, and the very most superficial layer of the ear drum (also called the tympanic membrane).
Finally, the middle ear, an air-filled cavity behind the ear drum (tympanic membrane), includes the three ear bones or ossicles: the malleus (or hammer), incus (or anvil), and stapes (or stirrup). The opening of the Eustachian tube is also within the middle ear.
Can't think of a proper defense role played by the ear (or by ear...!) a part from making us alert.
2007-01-28 06:35:28 · answer #2 · answered by Jesus is my Savior 7 · 0⤊ 0⤋
Ok, firstly decide what aspect of defence you are writing about. Human instinct defence or the body's immune defence.
For human instinct defence the ears are vital for hearing. Obviously without the sense of hearing the body is more vulnerable to accidents and attacks. Ears also are responsible for balance.
For immune defence the hairs in the ear and ear wax play an important aspect for keeping bacterial and virus out of the body.
2007-01-28 22:59:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I seen a documentry where genetic engineers growed/attached a human ear on a mouse. I not think it helped the mouse hear any better than it's own ears.
2007-01-28 06:28:09 · answer #4 · answered by Snaglefritz 7 · 0⤊ 0⤋
You are thinking waaay too hard! The answer to the question "what part do the ears play in the body's defense system" is that they alert a critter to a possible threat before it can necessarily see that threat! If you hear a rustling in the bushes when it's dark, you know it's time to slink away before you get eaten!
2007-01-28 06:25:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Hearing provides us the ability to sense danger. The caveman could hear a wild animal approaching by the sounds it made running, and it's wild cries. Both betray where it was coming from, giving the caveman time to get out! So, our hearing is one form of self-preservation.
2007-01-28 06:52:29 · answer #6 · answered by Bud's Girl 6 · 0⤊ 0⤋
The ears can defend the body by hearing danger comming and cause you to run away and not get killed by wild bears.
2007-01-28 06:23:38 · answer #7 · answered by Ken M 2 · 2⤊ 0⤋
defense against what?
the inner ear controls balance
you hear things coming.
2007-01-28 06:23:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋
isnt it something to do with the fact that the hairs play a part in balance....?
2007-01-28 06:26:34 · answer #9 · answered by miss AM 1 · 0⤊ 0⤋
i think its the same mechanism as the hairs in your nose.
2007-01-28 06:21:53 · answer #10 · answered by sally s 2 · 0⤊ 0⤋