Meaning of Bulb


Coming from the Latin word bulbus, the word bulb gives its name to a biological root structure whose format resembles a blister. The botanical presents it as a thick yolk is usually located in the underground portion of the plant and that holds reserve substances.

According to DigoPaul, the bulb, therefore, is an organ that allows storage of nutrients. It is formed when the base of the leaves becomes thicker and has five main parts: the basal disk (where the roots grow), the cataphils (where nutrients are stored), the tunic (which protects the cataphils), the stem (with the flower bud) and the lateral buds (which give rise to the new bulbs).

Among the bulbous plants, the onion, lily, tulip, garlic and leek stand out. It is possible to distinguish between tunicate bulbs (with overlapping layers that surround the bases) and squamous bulbs (with overlapping bases).

However, it must be emphasized that in addition to these two types of bulbs in the field of botany, mention must also be made of the existence of a third typology. We are referring to the so-called solid bulbs, which are those that are identified by having a fleshy saucer, because their form of reproduction occurs through the fact that the bulbous grow at the base of the bulb, and by being wrapped in dry and thin sheets.

In anatomy, on the other hand, the part of the medulla that extends from the annular protrusion to the occipital hollow of the cranial structure is known as the medulla oblongata. The bulb has the appearance of a truncated cone with a lower tip and is responsible for sending impulses from the spinal cord to the brain, regulating the secretion of gastric juices and controlling coughs and sneezes.

In the same way, we must also mention the existence of what is known as the olfactory bulb. This in particular is an organ that is found in the brain, exactly in its anterior part, and whose mission is to proceed to the perception of the various odors. To be able to carry it out with total success, it relies on a series of elements such as axons (neuron extensions) and mitral cells.

In the field of astronomy, the galactic bulb is the central group of stars that are part of spiral galaxies. These stars are distributed in space in an ellipsoidal way.

In this field we have to highlight that there is basically a double typology of bulbs. Thus, in the first place, we find the so-called classic bulbs, which are those that are formed by stars that belong to the so-called Population II. Specifically, these have as their main hallmark the fact that they are part of the first generations of stars that were created after the Big Bang. And that without forgetting that they are identified by being old, small and reddish.

Second, there are the pseudo bulbs that are listed as very similar to those that exist in spiral galaxies.

The electronic finally appeals to the bulb term for a component that is used to amplify, switch or modify an electrical signal.