Insects

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Insects
They are invertebrate animals from the insect family, from the arthropods branch, the insect has a fixed outer covering, or an external structure, a divided body, and joint legs, and adult insects usually have wings, and they are the only invertebrates that fly, and the body of adult insects is usually divided into three distinct parts , Namely: the head, chest, and abdomen, and the head carries three pairs of oral parts, one pair of compound eyes, three simple eyes (English: Ocellus), and one pair of common sensory antennas, and the chest is divided into three parts, each of which has a pair of legs , It has two pairs of wings, and the abdomen has posterior appendages associated with mating, and the exoskeleton consists of a solid substance called chitin.
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Insects breathe through a complex network of air tubes (trachea) that are open to the outside through a series of small openings (valves) along both sides of the body, and the digestive system includes the muscular viscera present in the insects that chew, and not found in sucking insects, The simple circulatory system consists of the tubular heart that pumps blood forward into the head, and spreads through the tissues and back to the heart, and the aquatic larvae breathe through the external gills, and some very primitive species also breathe directly through the body wall. شركة مكافحة حشرات بالقطيف

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