Biology, The EAR?

[failedmagician]

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This is what I've got on the ear:


Outer ear: 1. Auricle (Pinna), 2. Auditory Canal (Collects sound through Air medium)

Middle Ear: Collects sound through Air medium, ossicle = movement of cochlea liquid.

1. Tympain membrane (eardrum)-vibrates at frequency of incoming sound
2. Bones or OSSICLES: amplify stimulus and transmit to inner ear (incus, malleus, stapes--smallest bone human body)

Inner Ear: Collects sound through liquid medium. Hair cells are also the receptor cells involved in balance.

Cochlea + Vestiubular apparatus



Does anyone have a good idea of what is significant about each part of the ear? Anything that I'm missing that could be on the DAT? I don't know anything about the ear and I'm looking to cram it in. Thank you.

 

[navneetdh]

I think you have pretty much everything down for the ear , there are no more details necessary.

 

[nze82]

Maybe know some info about the Eustachian Tube and its function. In summary, I can say the Eustachian Tube equalizes the pressure at both sides of the Tympanic membrane, allowing it to oscillate, when sound waves hit. During an ear infection, sometimes the Eustachian Tube gets swollen and blocked, ******ing the oscillation of the Tympanic membrane. This explains why people sometimes have impaired hearing, when they have an ear infection.

Other than this, I think you've mentioned everything else in your post!

 

[pbure9]

What everyone said I'd have to agree with. Also it can't hurt to know that those hair cells sit on basilar membrane in the organ of corti. They are pinned into the bottom of the tectorial membrane, and vibrations of the fluid in the cochlea bend the hair cells which send action potentials to the brain.

And I'd also be aware of the semicircular canals that detect vertical and horizontal head movement and acceleration.

 

[192LT192]

there was nothign about the ear in cliffs bio. where did you study about the ear? and which topics should i know that arent in cliffs at all? im scared im missing so much stuff

 

[failedmagician]

there was nothign about the ear in cliffs bio. where did you study about the ear? and which topics should i know that arent in cliffs at all? im scared im missing so much stuff

It's in Kaplan. There's some stuff not in Cliffs. There's some stuff not in Kaplan. You have to go for more sources than just Cliffs.

 

[failedmagician]

What everyone said I'd have to agree with. Also it can't hurt to know that those hair cells sit on basilar membrane in the organ of corti. They are pinned into the bottom of the tectorial membrane, and vibrations of the fluid in the cochlea bend the hair cells which send action potentials to the brain.

And I'd also be aware of the semicircular canals that detect vertical and horizontal head movement and acceleration.

Thank you.

 

[failedmagician]

Maybe know some info about the Eustachian Tube and its function. In summary, I can say the Eustachian Tube equalizes the pressure at both sides of the Tympanic membrane, allowing it to oscillate, when sound waves hit. During an ear infection, sometimes the Eustachian Tube gets swollen and blocked, ******ing the oscillation of the Tympanic membrane. This explains why people sometimes have impaired hearing, when they have an ear infection.

Other than this, I think you've mentioned everything else in your post!

Thanks again nze!

 

[Extirpator]

there was nothign about the ear in cliffs bio. where did you study about the ear? and which topics should i know that arent in cliffs at all? im scared im missing so much stuff

Kaplan bb has a section on it, or just look it up the stuff that everyone mentioned on wikipedia real quick

 

[192LT192]

It's in Kaplan. There's some stuff not in Cliffs. There's some stuff not in Kaplan. You have to go for more sources than just Cliffs.

yeah i realized i have to do kaplan too but if i just do kaplan and cliffs is that enough sources? are there major things that ill be missing if i just study those 2?

 

[nze82]

yeah i realized i have to do kaplan too but if i just do kaplan and cliffs is that enough sources? are there major things that ill be missing if i just study those 2?

The only things you'll be missing out on, if you stick with cliff's are:
-Endocrinology (I suggest you review this section in KAPLAN)
-The eye & the ear (I think they're discussed in more details in KAPLAN)
-Minor stuff related to ecology like Biomes, Nitrogen and Carbon cycle, and some stuff related to animal behavior.

Other than that, cliff's is a highly recommended resource.

 

[GiTsticker]

I would do destroyer bio also just because the destroyer is worth its weight in gold. Unfortunately it is priced accordingly. lol

 

[navneetdh]

I personally feel kaplan and cliffs are great by themselves. I bought princeton GRE bio, and kaplan GRE bio. They have some more stuff but nothing that cliffs and kaplan bb didn't have. kaplan GRE bio is wayyyyy to much info, i think for DAT its a waste. Princeton GRE bio was a good supplement if you really want to buy another book. I have looked over quite a few other books and found princeton to be most straightforward.

 

[192LT192]

thanks everyone!