Parts of the spider

This is the first of the two parts that make up the body of a spider, separated by a “waist.” It is also called cephalothorax, because here is its headache along with its sensory organs necessary to interact with its environment and also its region analogous to a thorax.

This is the anterior part of the spider and they are arranged:

• Simple eyes: that can be found multiplied in several peers. Spiders usually seem to us terrifying animals, but when you see the tender eyes with “eyelashes” of the salticids you will think differently. The disposal, number and color of the spider eyes are important features that help for the identification and classification of species. In fact, many people ask how many eyes the spiders have, and their number can vary from 8, 6 or 4. There are some that have no eyes or lose vision for living underground.
• Mouth: Liking to the esophagus.
• Brain: that receives the impulses and that processes the information.
• Respiratory buche: But it does not replace the lungs.
• Digestive receptacleanalogous to the stomach.
• Circulatory system: that irrigates the prosoma with hemolymph, an equivalent liquid in arthropods to the blood. Discover what arthropods are: characteristics, classification and examples, here.
• Chelickers: With the poison glands located inside.
• Pedipalpos: This is its second pair of appendices.

In the following sections we explain more in detail about each of these parts that you may not know.

This is the posterior region of spiders and is also called abdomen. Most of the Systems for internal functions. Such are:

• Digestive gland: As they cannot digest their “solid” victims and have a digestive system of a small size, what they do is insert their prey a poison to liquefy them and absorb them later. It should be noted that spiders They are carnivorous And their favorite food is insects. Check out this article on predators and dams: examples and characteristics of ecology.
• Excretory system: composed of the Malphigi tubes, the stercoral sack and the anus.
• Reproductive system: With oviduct, seminal and vagina receptacle, or spermatic duct, copulatory organ and testicles.
• Rows: With associated glands for silk production.
• Continuation of the circulatory system: With heart, a hole called Ostiolo to allow the passage of hemolymph, side blood vessel and pericardium sack.
• Respiratory system: With a single lung in book, whose name refers to its form as pages of parallel books with each other, in order to optimize, organize and make this organ more efficient. Here the gas exchange is carried out and has an opening to transport the respiration results. Here the hemoolinfa is also stored.

They are the Locomotive Appendices for displacement of these organisms. Spiders have four pairs of legs, that is, eight. They belong to the artopods, which means that His eight legs are articulated. Each is composed of several fragments, called articles, which leave from the bottom of the prosoma where they have a small muscle. Starting from the united to the body, these parts are called:

• Coxa
• TROCONTER.
• Femur.
• Patela.
• Tibia.
• Metatarsus.
• Tarsus.
• Pretarsal: with one or two nails.

These joints make the Analogous function to vertebrate musclesbecause arthropods need to help some mechanism to move by lacking muscles themselves. They are divided into so many fragments to have a greater domain and flexibility when walking and even to jump.

The legs also help the hydraulic pressure to move, in which it is used Hemoolinfa pressure to move their legs out. The prosoma accumulates a great hemolymph content and that is why the legs are connected to this part of the spider. The exoskeleton, that is, the hard layer that covers insects and brings them a support, plays with this hydraulic pressure so that spiders can exert force out, helping their locomotion.

Do not hesitate to consult this other post about vertebrate animals: classification, characteristics and examples so you can know more about the subject.

These structures They are oral appendicessimilar to small fangs very sharp, used by spiders as a hand or tool to take your food. They are located before the mouth and are arranged in a couple. They can have different shapes, such as tweezers, fangs or knives.

Also They store their poison hereuseful to immobilize your prey. Depending on the spider, poison may or may not be lethal to humans. These cheers have a nail that comes out only when it is going to inject poison, functioning like an advanced needle.

We present this article with 16 poisonous mammals that may seem interesting.

Are Another type of appendices very similar to legsbecause they are composed of the same fragments. The difference is that they do not touch the ground and have a Tactile and olfactory function To recognize their environment (instead of locomotive) although some spiders can use them to move, such as tarantulas, for example. There are only a couple of them and they are after the chelickers and before the legs.

Spiders normally three pairs of rowsalthough the most primitive present eight in total. In these are several and different glands for silk production Spider or web, a hard but in turn elastic protein. These glands have ducts to the end of the row so that they can be used by the spider. The product is an extremely flexible silk, water repellent and very resistant, used to capture or wrap your preymove through the air or to build nests.

If you want to read more articles similar to Parts of the spiderwe recommend that you enter our biodiversity category.