psychology help!!!!!!!!!!!!!!!?

Question

answer the following questions and i will greatly appreciate it and you will get 10 people....

1. describe the stimulus and receptors for taste and explain the difference for olfaction than all the other senses.


2. outline how sensory process occurs in the ear.

MY BAD I MEANT POINTS NOT PEOPLE

Answer 1

No! I want the people, not the points. I have a shedload of ironing to do.

Ear: three little bones, hairs, eardrum. Nose: sorry, dunno.

Answer 2

1. Taste and smell are the two "chemical" senses, meaning that they need an actual chemical substance to come in contact with their receptors in order to send information to the brain.

For taste, four basic "tastes" have been distinguished - sweet, salty, bitter, and sour (although there is some discussion that there may be more, including "umami" which translates to "savory").

For a substance to be tasted, it has to come into contact with saliva and therefore it must be water-soluable. The chemical characteristics of the substance are what determines what it tastes like.

The basic receptors for "taste" are called "taste buds" and they are located in tiny pits and grooves of the throat, mouth, tongue, etc. We have about 9,000-10,000 in our mouths. They are mostely found in clusters on the tongue called "papillae".

Each taste bud has about 50-150 "taste cells" that have "microvilli" with are like little hairs that come into direct contact with the chemical substance and send the information to the brain.

2. For the auditory system:

First, sound waves are collected by the "pinna", which is the outer portion of our ear. It acts as a sort of funnel.

The sound waves travel through the external auditory canal and to the eardrum, which is stretched across the inner end of the canal and seals off the middle ear.

The eardrum vibrates in response to the sound waves and transmits these vibrations to the middle ear. The three bones of the middle ear are the malleus, the incus, and the stapes (in that order). The vibrations travel between these three tiny bones. The staples has a footplate that connects to the "oval window", which is the entrance to the middle ear. The stapes vibrates against this membrane to send the vibrations through to the inner ear.

The inner ear is a small tubular structure called the "cochlea" and it is coiled. The vibrations go through the cochlea and hit the receptive structure known as the "organ of corti". It contains tiny hair cells that move to the vibrations and send the information to our brains.

Answer 3

In your nose are cells called the olfactory cells which control smell. They are found in the nasal mucosa or soft cells and mucus membranes of your nose. On the top of these cells are hairs (cilia) which receive the chemicals that make up a smell and transmit it to the nerve cell at its root. I think .
In your ear small hairs in your cochlea stimulate nerves from sound vibrations at different points across its surface representing different frequencies.

Answer 4

In mammals taste buds are aggregations of 30-100 individual elongated "neuroepithelial" cells (50-60 microns in height, 30-70 microns in width), which are often embedded in specializations of surrounding epithelium, termed papillae. At the apex of the taste bud, microvillar processes protrude through a small opening, the taste pore, into the oral milieu. Just below the taste bud apex, taste cells are joined by tight junctional complexes.

Taste papillae can be seen on the tongue as little red dots, or raised bumps, particularly at the front of the tongue. These ones are actually called "fungiform" papillae, because they look like little button mushrooms. There are three other kinds of papillae, foliate, circumvallate and the non-gustatory filiform. Taste buds, on the other hand, are collections of cells on these papillae and cannot be seen by the naked eye. To illustrate the point, have a look at the diagram below. You can see that the taste buds are collections of cells situated on top of, or on the sides of, the different papillae.

http://www.cf.ac.uk/biosi/staff/jacob/teaching/sensory/taste.html

If you are still listening here is the ear.
Three sets of actin filaments in sensory cells of the inner ear. Identification and functional orientation determined by gel electrophoresis, immunofluorescence and electron microscopy
Summary Receptor cells in the ear are mechanically excited through displacement of sensory hairs, stereocilia, in relation to a sub-surface platform, the cuticular plate, into which rootlets of the stereocilia insert.
The presence of actin in inner ear sensory organs and receptor cells was established by gel electrophoresis, by labelling with antibodies against actin, and by electron microscopy after decoration with subfragment-1 of Myosin. The latter method was used to determine the functional orientation of actin filaments found to be present in the mechanosensitive region of the receptor cells. Actin filaments were demonstrated in the stereocilia and their rootlets, in the cuticular plate and in relation to the zonula adherens surrounding the top of the cell. Filaments which run parallel to the cell surface were found in the cuticular plate and zonula adherens. Some filaments associated with the zonula adherens had a functional orientation opposite to that of more centrally located filaments in the cuticular plate. A structural complex consisting of a solid filament surrounded by actin filaments in hexagonal packing was found in the periphery of the cuticular plate. The possibility is suggested that the central filament is myosin.

That's all I have to say about that.....

Answer 5

Hope this isn't for Open University work, I struggle on my own to do my essays as do thousands of other OU students all across the world. What's the point in asking people on here for the answer? You won't have achieved anything except cheating. Do it yourself, and revise properly.

Answer 6

If I have to do all this work, I'll be darned if I give you my answers for this crap! Do it yourself like I have to!
whats the other two senses?

Answer 7

i am not sure how to answer this so can i just have the 10 points?????

Answer 8

Can I have the 10 points please. I hate psychology. They try to tell U who U are.

Answer 9

Because thats the way it is!!!!!!!. I never got 10 points please help.

Answer 10

do your own bloody homework!!