Olfaction Essays

A short history of olfaction theories 1. Molecular shape (“lock and key” model) Generally, odorants activate many olfactory receptors, as the receptors are more about the properties of the substance than the substance itself. A particular odorant will bond only to the receptors it corresponds to, enabling a person to identify the smell. Odorants and receptors can be imagined as a lock and key pair. SIGNAL TRANSDUCTION Action potentials (electrical signals) convey information along neurons. Electrical

that refers to smell is placed in a similar area to the part of the sensory cortex that refer to taste. The smell is only activated when it hits the neurons. Obtaining information (scent) from the back of the mouth is process called retro nasal olfaction, but obtaining information (scent) via our nostrils is ortho nasal

David Shoemaker Dr. Molesworth Graduate Seminar January 29, 2016 Abstract The olfactory bulb is a vital part of the olfaction process sending signals to different areas of the Central Nervous System. The olfactory receptors are located in the nasal cavity and are responsible for binding different odors which causes signals to be sent to the olfactory bulb. When the whole process is completed we have our sense of smell. Located in the olfactory bulb are mitral cells. Mitral cells receive signals

Wonderful light holders, and even the candles inside are a vital part in inside adorning. Not exclusively will they make your home feel cozier in a moment, yet it will speak to the eye, and to the nose of your guests. With flame holders you can locate the ideal one that will compliment or even outwardly make the light seem to cost more, or even show up originator. On the off chance that you have a major flame holder, or even need an enhancement or your divider then a period divider sconces holder

Richard Adams’ novel, Watership Down, is a story about a group of rabbits and their journey to a new place to call their home. These rabbits are led by Hazel. Although Hazel is not the chief of the warren, he eventually becomes it. Along the way, he proves to be great leader. On their journey, they encounter a rabbit named General Woundwort who is the chief rabbit of the Efrafa warren. Throughout the novel, Hazel and General Woundwort showcase qualities that make a good leader. Although they share

In the modern day, the most important trait looked for in the profession field is not a strong work ethic, leadership, or charisma, but rather a strong sense of integrity. In “The Old Man and the Sea”, Ernest Hemingway utilizes Santiago as a protagonist who maintains a strong sense of integrity and chooses to never boast despite being presented with many opportunities to do so. While boasting may temporarily satisfies various insecurities, it leaves no lasting impression on the crowd who hears it

Change is what forms our lives. It is what makes our life either different of similar to each other. It is complex, and we human tend to fear the face of change while lack of it also leaves us with thoughts of what could have been. Small choices form the both smaller and bigger changes of our life. Therefore, we are forced to always re-evaluate our choices and live with the shadow of the many possibilities our life may have had. The short story “The Irish Poet”, written by Ruth Benson, shows how

A few months ago, I binge-watched the first season of the television series Arrow. The show is about a billionaire named Oliver Queen, who returns to Starling City after being stranded on an island for five years. By day, Oliver acts like the wealthy businessman his friends and family consider him to be. By night, Oliver secretly is a vigilante who protects the people of Starling city--armed with only a bow and arrow. In episode seven, Oliver meets Helena Bertinelli, a girl Oliver feels he can finally

A tactic that authors use more often than not is to adopt certain characteristics and features that mirror human behavior or human nature in order to further convince and assure the readers that the story or work of fiction is realistic. The writers attempt to create characters that are wholesome – which means (in this context) being the most human like, with natural characteristics and flaws, as well as expressing genuine, convincing and believable traits in order for their audience to be able

Since driving your car every day, it's already a given that you're going to get dirty. If it rains or shines, placed in the garage or not, dust and dirt will accumulate in certain areas. Due to this, your car deserves some tender offer care, even in the simplest ways. As owner and driver, you can keep cleaning your car by washing and soaping your outside. Although you can always bring your car wash from the neighborhood, it will cost you some money. Finding the right soap to use is not a problem

It was early in the morning when I had gotten up to go do my chores. Mother was already cooking Tortilla Hispaniola, something she never did unless there was a special occasion. I went outside and felt the light crisp breeze hit my face and could smell the special dish my mother was preparing. I washed the clothes , mopped what little of a “house” we had, and was getting prepared to go out to the market to see if I could bargain something so we could have another weeks supply of food. I was lacing

The downstairs old lady must be baking a pumpkin pie this evening. The entire apartment building smells disgustingly sweet. Knocking on her door and screaming at her to leave the building with her stupid pumpkin pie but the idea seemed to be.. too aggressive regarding the society’s standard on people’s social interactions. Looking normal and amicable to the neighbors was significant to stay undercover. I bet she used a better quality of pumpkin than that she used last year since her pumpkin pie

Whenever death was close, that smell would be present too. Together with the pungent smell of rotten corpses and scorched flesh, it holds a marvelous symphony that no one wants to hear. Still, I can't help but be driven towards it. At the end of my life too, I was met with that smell. That putrid stench of sulfur would penetrate through my nose and engrave itself onto my bones. The smell of rotten eggs. It's distinct. It's disgusting. Still, I can't help but be driven towards it. I know even

Kiersten Ruecke Sarah Meinel WRT 150 September 10, 2014 Your mouth waters as the salty buttery smell of the popcorn fills your lungs. After a few bites, you quench your thirst with your sweet tea and wipe the condensations right off the table. The day is finally here. Waiting with anticipation all year long is finally coming to an end. The TV is turned on to CBS and in six excruciating minutes it will be ten o’clock. But the excitement overrides the impatience. The popcorn bowl is now empty with

David Sedaris’s short story entitled “Jesus Shaves” is a very interesting tale of a man and his fellow classmates in a French class trying to learn about important holidays. Sedaris uses multiple literary devices in his short story that drives the point towards learning about what Easter really stands for. In the early part of the story the teacher of the French class states, “And what does one do Easter? Would anyone like to tell us?” (435). This quickly deboogles the minds of the students in the

We remember your childhood well How could the text be read and interpreted differently by two different readers? In literature, there isn’t any literary piece that is interpreted exactly identically by different readers. The interpretation usually is based on the context of in what way the reader reads the poem (literature piece). Readers usually base their interpretation of the poem depending on the message of the poem that is related to the context that they are reading the poem. This text can

A Rose for Emily bares its biggest symbolism in the title, the mention of a rose. Traditionally the denotative meaning of a rose is a shrub-bearing plant with pinnate leaves and multiple petals, mostly fragrant flowers in various colors, it is a wild, high-stemmed, climbing, fast growing, flower. The rose is considered as the queen of flowers, typically bearing red, pink, yellow, or white fragrant flower petals, native to north temperate regions. Numerous hybrids and cultivars have been developed

The novel scarlet letter was written by Nathaniel Hawthorne. He wanted to expose the immorality that was committed by two parents of a daughter called Pearl. Nathaniel's novel explores the hypocrisy in puritan societies. The novel tells a story of Hester Prynne and her daughter. Hester having committed adultery and tries all what she can so as to ensure that she live of repentance and dignity. In the Scarlet letter, the influence and characteristics of Pearl, Hester Prynne daughter is used to convey

Dante’s Inferno represents a microcosm of society; meaning, laymen, church, politicians, and scholars are all compiled into one place and punished for their sins. Hell, despite being depicted as brutal, ugly, and chaotic, is made realistic because the inhabitants come from every country and every walk of life. While Dante Alighieri did not invent the idea of Hell itself, he did create an important and in depth concept that still receives attention in biblical, classical, and medieval works. The Divine

Ray Bradbury used symbolism, similes, and metaphors in The Veldt, in order to allow the family’s true colors to break the surface. Having multiple forms of symbolism allowed readers to let their imagination wander into how they interpreted the story and its meaning. The metaphors and similes handed readers something easy to compare the story to. Overall, Ray Bradbury’s excellent use of author’s craft made the short story interesting and fun to dive into. Happylife Home is what the Hadley’s