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dogs have 1,000 more scent receptors then a human
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoAt least 200,000 receptors.
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How much stronger is a cats smell then people?
The olfactory receptor genes map topographically onto the first relay station, a sheet of modules called glomeruli in the olfactory bulb. Up to 80% of the glomerular layer in the rat can be removed without significant effect on olfactory detection and discrimination (Bisulco and Slotnick 2003). If the remaining 20% of the glomeruli-and the olfactory receptor genes they represent-can subserve the functions of 1,100 genes, it implies that 350 genes in the human are more than enough to smell as well as a mouse. Source : http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=406401
What machines do people use at home?
people use sewing machines, washing machines, TVs, computers, and much more
How much better can a dog smell than a human?
The structure of a dog's nose gives it a sense of smell that is thousands of times better than a human being's. A dog's nose has two hundred million nasal olfactory receptors. Each receptor detects and identifies the minute odor molecules that are constantly flying off different objects. Of all a dog's senses, its sense of smell is the most highly developed. Dogs have about 25 times more olfactory (smell) receptors than humans do. These receptors occur in special sniffing cells deep in a dog's snout and are what allow a dog to "out-smell" humans. Dogs can sense odors at concentrations nearly 100 million times lower than humans can. They can detect one drop of blood in five quarts of water! Sniffing the bare sidewalk may seem crazy, but it yields a wealth of information to your dog, whether it's the scent of the poodle next door or a whiff of the bacon sandwich someone dropped last week.When a dog breathes normally, air doesn't pass directly over the smell receptors. But when the dog takes a deep sniff, the air travels all the way to the smell receptors, near the back of the dog's snout. So for a dog, sniffing is a big part of smelling."Generally" dogs have an olfactory sense approximately 100,000 to 1,000,000 times more acute than a human's. A Bloodhound, (The dog with the highest sense of smell) has a 10,000,000 to 100,000,000 higher ability than a human.In the wild: Wild canines rely on smell for hunting. They also use smell to decode scent messages left by other animals -- friend or foe, predator or prey. A wild canine's sense of smell is especially important in habitats where seeing prey is difficult such as the thick underbrush of forestsre at home: sniffing dogsA dog can sniff out all sorts of smells that human noses miss. Because of this keen sense of smell, we can train them for jobs such as tracking, rescue, or drug and bomb detection and to detect a wide variety of specific scents, such as drugs, fruits or the feces of particular animals. Dogs that make a living by sniffing are trained to alert their handlers to the presence of these things by pawing, barking, or in the case of something dangerous, sitting quietly. They are trained by the promise of a favorite toy or play time each time they successfully sniff out the target scent.
How much are polydactyl cats worth?
they arn't really worth more money than other cats (though some people might pay more if they want one), but many people like them for their uniqueness. It sure is cool if you have one :)
How much does Cristina scabbia weigh?
Most people say around 50kgs (110lbs) but she has soo much mucele on her so I'd say more around 55-58 kg range.. (121lbs-127lbs) :)
What is your brain connceted to?
It's connected to your muscles, you eyes (via optic nerve), your ears (via auditory nerve), your nose (via olfactory bulb), your mouth (for taste receptors on tongue), your skin (different types of touch receptors in the skin). Your brain is responsible for regulating most of what the body does, so it's connected to pretty much everything
How much stronger is a cats smell then people?
The olfactory receptor genes map topographically onto the first relay station, a sheet of modules called glomeruli in the olfactory bulb. Up to 80% of the glomerular layer in the rat can be removed without significant effect on olfactory detection and discrimination (Bisulco and Slotnick 2003). If the remaining 20% of the glomeruli-and the olfactory receptor genes they represent-can subserve the functions of 1,100 genes, it implies that 350 genes in the human are more than enough to smell as well as a mouse. Source : http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=406401
What is the adaptive significance or survival value of having thousands of different olfactory receptors and only 5 different types of taste receptors?
You have to smell the different types of smell to locate the food and dangers and to find a partner for sex and reproduction. This function is much important as compared to eating a food. If you can taste that food is good to eat or not is enough to survive. There also nose can play very important part. This is the reason for the same.
Can your sense of smell alter your sense of taste?
Much of what most people consider "taste" actually is smell. Most fruit really tastes pretty similar... if you plug up your nose so you can't smell it, the difference between two fruits of similar acidity and sweetness is mainly in the texture. So, in that sense, yes. There is no direct causal relationship on a physical level because taste and smell are mediated by different types of receptors detecting different types of chemical compounds. Smell is carried from olfactory receptors in the nose to the brain via the Olfactory Nerve (cranial nerve I). Taste is carried from gustatory receptors on the tongue to the brain via the Facial Nerve and the Glossopharyngeal Nerve (cranial nerves VII and IX). However, these signals are integrated extensively in the cerebrum and many connections are made. Therefore, it is plausible that the mere smell of a certain type of food can elicit the memory of the taste of that particular food.
How do olfactory bulbs work during puberty?
The olfactory bulbs are a part of the brain involved in odor/taste. In antomical studies of animals such as dogs ,cat, rats, mouse which have a much greater reliance on sense of smell, the olfactory bulbs ate much larger in portion to the whole brain. This heightened sense of smell is used by these species for the detection of pheromones, and other chemical triggers given off by the other sex of the species. In humans, who rely so much less on the sense of smell, the olfactory bulbs serve a much smaller role in mating/reproduction. While it has yet to be determined if humans even produce significant pheromones, certain odors can have sexual responsive effects, but this is limited often to individuals and not the whole human race. While olfactory bulbs may increase in relative size during puberty in humans, it is unclear what significance this may have.
How can the touch of smell be artificially manipulated?
The sense of smell is a very sensitive and complex ability called one of the five special senses. One of things most people are not aware of is that most so-called air fresheners are actually made from chemicals that get dispersed into the air and when they come into contact with your olfactory receptors in your nose, they plug them up so that you cannot smell as well, so they don't really clean the odors out of the air as much as they cut off your ability to smell.
Identify three different types of stimuli?
Visual, tactile, auditory, olfactory, taste These are the most broad. They can be much more specific such as, just for Auditory: Verbal, Somatic, musical... It could also be very abstract. A stimuli can pretty much anything that solicits a response. Cause and effect.
How does eye control light?
The eye uses both the pupil and iris to control how much light enters the visual receptors. here is a source to read more: http://www.biologymad.com/NervousSystem/eyenotes.htm
What kind of stuff do we smell?
How We SmellDirty socks. Perfume. Fresh-cut grass. Coffee in the morning. Pizza. Hot dogs at a baseball game. Gasoline. Roses. Every day our noses play host to a variety of yummy and not-so-yummy odors.We generally don't pay a whole lot of attention to it, but our sense of smell has some important jobs to do. It helps us to distinguish between foods that are safe to eat and foods that are on the verge of becoming bacteria cultures. The sense of smell warns us of other kinds of danger, too - such as fire or a gas leak. Smells also give food their flavor; you couldn't taste very much without them.How do we smell things? How are we able to detect thousands of different odors, from dirty socks to roses? Here are the five steps of smelling - or "olfaction," as it's also known. The diagram below will help you follow the steps.Step 1: Molecules up your nose Molecules of whatever you are smelling are traveling up your nose, carried on the air you inhale. So, if you can smell dirty socks, it's because tiny dirty-sock molecules have made their way into your nostrils. (In fact, they're molecules of isobutyric acid, which is what gives sweat its odor.) These airborne molecules are "odorant molecules" or "smell molecules."Step 2: Lock and key En route to your lungs, smell molcules get caught in a gooey membrane inside the nostrils. This membrane, known as the "epithelium," is full of the neurons that carry smell receptors. Receptors are your body's tools for picking up smells; the receptors latch onto the smell molecules as you inhale. You've got about five million receptors altogether - so there's quite a welcoming committee for all those smell molecules that whizz up your nose.Smell receptors are picky: They'll only hook up with certain smell molecules, in the same way that a lock will only be opened by a certain key. So, for example, some smell receptors will respond to dirty-sock molecules, and some receptors will respond to coffee molecules.You have about 1,000 different kinds of smell receptors - but you can detect about 10,000 odors. How can you pick up so many odors if you've only got 1,000 types of choosy receptors?Scientists figure that groups of receptors act together in different configurations to pick up odors. A leading olfaction researcher, Linda Buck, compares it to the alphabet: The alphabet contains just 26 letters, yet we have thousands of words and numerous complex languages to convey meaning. Similarly, with 1,000 types of odor receptors working together in different combinations, your nose can make codes for about 10,000 odors.So, what happens after the smell receptors pick up smell molecules?Step 3: Sending signals The information picked up by the smell receptors has to make its way to your brain for processing - so your brain can figure out what the odor is.Each activated smell receptor triggers the neurons in your nose to send a signal - or impulse - to neurons in the part of your brain known as the olfactory bulb. But the work isn't done yet. The activity in the olfactory bulb is processed in an even higher level in your brain, in the place known as the "olfactory cortex."Step 4: Brainpower Signals are relayed from the olfactory bulb to the olfactory cortex, triggering patterns of activity in the cortex. Scientists figure that certain patterns of activity correspond to certain smells (just like certain groups of letters form words). So you'll see one pattern for coffee and another for dirty socks.This suggests that specific parts of the olfactory cortex respond to specific smells - an idea that scientists came up with only recently. It's like flicking light switches. One group of switches will go on for coffee. And another group will go on for roses.What's more, research suggests that the same smells probably activate the same switches for everyone. So, if you and your friend both smell dirty socks, the same patterns of activity are going on in your respective olfactory cortexes. Your brains register what odor it is in the very same way.This is actually a radical new finding in the study of olfaction, and it was made by scientists studying mice. In the Nature journal last November, leading researchers described how all mice are wired to decode smells in the same way. "The fact that this [smell] information is highly organized in the olfactory cortex, and is the same in different individuals, implies something about the perception of odors among different individuals," says researcher Linda Buck. "It provides a potential explanation as to why the odor of, say, a skunk smells bad to all people." Buck and her colleagues are making an "olfactory map" for mice and some day they expect to do the same for people. Their work is advancing the field of olfactory study by leaps and bounds.The smelling process is complex, but in real time, it happens instantaneously. When an odorant coffee molecule makes its way into your nose, it takes a split second for you to consciously realize what the smell is. Your body and brain have the power to receive and interpret complex data at phenomenal speed.I hope this helps XD
Is it difficult for people to get pregnant?
It is much more difficult to get pregnant in your thirties. Younger people are more fertile.
How much more can you comprehend visually than audibly?
This question has no answer because it is not true for everyone. Some people do not comprehend better visually. Some people about the same. Some people much more, some slightly more.
What differ from sensations in that they depend as much on prior experience as they do on neural cues traveling between receptors and the brain?
perception.
