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Anonymous users2024-02-13The largest number of animal groups on the earth on which we live is insects, and the forms of insects are different, there are many species, the number of insects is the largest, the life footprint of insects has spread to every corner of the earth, the olfactory function of insects has played a lot of important roles for its survival, the smell of insects can not only help insects choose habitats, but also forage and reproduce for them, and can also transmit information between their groups, so the sense of smell of insects is extremely important for insects.
But most insects have olfactory receptors on the antennae of their heads. The head of an insect has two antenna-like whiskers, which are called antennae, and the antennae are not only different in shape, but also different in length and thickness. Insects are constantly wiggling their antennae to sense the air currents and smell various smells of the outside world, and for some insects, their antennae have other special functions.
For example, when the bug swims, it will move its antennae and then achieve the effect of balancing the body. The water turtle worm will also use its antennae to help it breathe better.
Many insects are noseless, but their sense of smell is no less than that of animals with noses. The insect's olfactory aperture is located on its antennae, and when scientists look at honey with a microscope, it has as many as 4,000 to 30,000 olfactory apertors on a single antennae. These olfactory organs are mainly distributed in nerve endings, and the nerves are directly connected to the nerve endings, so when Xiuqi smells the smell, it will transmit this information to the brain through the nerves, and then direct the actions of the insects through the brain.
Even though an insect does not have a nose, its antennae have powerful olfactory receptors that can sense external tastes. Since insects can exist as the largest group of animals on the earth, their olfactory organs must have their special existence even if they grow on their antennae. For insects, olfactory receptors with antennae are also bound to be effective.
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Anonymous users2024-02-12Insect olfactory receptors are effective on the antennae of the head. First of all, their antennae are very long, they can sense the existence of their surroundings in a large range, and the receptors on their antennae are very sensitive and can recognize many things.
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Anonymous users2024-02-11Of course, the olfactory organ is the key organ for insects to find food, and it is the basis for their survival.
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Anonymous users2024-02-10With the deepening of the study of insect chemical ecology, the study of insect olfactory physiology has also become a hot spot in insect physiology research.
Insects rely on olfactory receptors on their antennae for volatile chemical signal recognition, and insect antennae are sensitive olfactory sensors that can identify necessary chemical signals (information chemicals) from many unrelated compounds in their surroundings, such as sex pheromones, and even a small change in chemical structure can completely inactivate them.
This unusual selectivity of the insect olfactory system is closely related to high sensitivity.
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Anonymous users2024-02-09The sense of smell is the main means of information communication between insects and the external environment, and plays an important role in the behavior of insects such as foraging, finding mates, gathering, selecting spawning sites and habitats, and avoiding the harm of the external environment. Insect sense of smell is characterized by a highly specific and extremely sensitive recognition function.
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Anonymous users2024-02-08Why do insects have a keen sense of smell without a nose?
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Anonymous users2024-02-07The body of the locust can be divided into three parts: head, thorax and abdomen, with a pair of antennae on the head, a pair of compound eyes and a mouthpart; thorax with two pairs of wings and three pairs of feet, abdomen soft and bent; Outside the body there are exoskeletons and other antennae and feet are evenly segmented, and the antennae have the role of smell and touch
Therefore, c
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Anonymous users2024-02-06The body of the locust can be divided into three parts: head, thorax and abdomen, with a pair of antennae on the head, a pair of compound eyes and a mouthpart; thorax with two pairs of wings and three pairs of feet, abdomen soft and bent; Outside the body there are exoskeletons and other antennae and feet are evenly segmented, and the antennae have the role of smell and touch
Therefore, c
There are a total of 10 million olfactory receptors, known as olfactory cells, on both sides of the nose. It is distributed on both sides than the septum and the middle turbinate to form an olfactory fissure, with an area of 5 square centimeters. Each olfactory cell has 1000 cilia, which increase the receptive area of the receptors. >>>More
300 words for insects after reading.
Recently, I read "Insects", written by the famous French entomologist Fabre over a period of almost 20 years, and I loved it so much that I read it three times in one sitting. "Insects" not only made me familiar with the living environment of insects, the homes of insects, and the food of insects; It also gave me an understanding of the habits, instincts, and strategies of insects. Fabre tells us an ordinary, peculiar and interesting insect world in the form of an easy-to-understand story, from which I know how dung beetles roll dung balls and are the "cleaners" of the grassland; The tubeworm uses tiny balls to make beautiful clothes for babies, and is the "smart tailor" of the insect world; The cicada is a singer of nature, a self-reliant and hard-working man, and the ants are fierce predators who snatch up all the food that the cicadas have worked so hard to find. >>>More
It should be there, otherwise you wouldn't know that people are **.
The nose has no sense of smell, you can't smell anything, and if it appears during a cold, there is no need to make a fuss, after a cold**, the sense of smell will return to normal. >>>More
From the top of **, olfactory dysfunction or anosmia is divided into two types: primary and secondary. Primary is a loss of smell for which no cause has yet been found, such as a sudden loss of smell after a cold. Some people even lost it inexplicably. >>>More