Do insects have brains?

Answer 1

All insects have bi-lobed brain located in the dorsal part of the head. It is a solid organ unlike humans. Vertebrate brains are internally hollow.

Answer 2

The Nervous System




The insect nervous system consists of a 'brain' (the result of the fusion of 3 pairs 'ganglia' [a 'ganglion' {plural 'ganglia'} is a collection of neurons or nerve cells in a single place] ). A pair of slender connectives cords run, side-by-side from the brain to the end of the insect's abdomen are known as the 'ventral nerve cord'. These connective cords meet at intervals along the insect's body at the 'ganglia'.

In the most primitive design there is one pair of ganglia per body segment, thus, as the head is made up out of 6 fused body segments, it contains 6 pairs of ganglia, these are collected into 2 groups, each of 3 ganglia, the foremost of which is called the brain and the hindmost the 'subesophageal ganglion'. The ganglia function to co-ordinate the activities of the body segment they represent. In the most basic design there are usually 3 thoracic ganglia and 8 abdominal ganglia but in most of the higher insects some of abdominal ganglia have been lost, or become fused with those nearer the head. In the cockroach Blatta orientalis there are 3 thoracic and only 6 abdominal ganglia and in the hornet Vespa crabro there are only 2 thoracic ganglia and 3 abdominal ganglia, the yhind most of which is very mich larger than the other two because it is made up of a number of ganglia fused together. This trend culminates in insects such as the common house fly, Musca domestica, where all the abdominal and thoracic ganglia have become fused into a single compound body-ganglion.


Insects do not have brains as we define them, but they do have groups of
nerve cells in several locations that basically act as brains. I believe
the biggest one is in the insect's head, so it's actually not too wrong to
conclude that insects do have brains.

Brains do not direct the development of an insect's body any more than a
brain directs the development of a human body. As the larval insect grows,
small groups of cells form in several locations. When the insect pupates,
that is, ceases activity so that it can metamorphose from a larva to an
adult, these groups of cells grow, divide, and ultimately consume most of
the larval cells, eventually becoming the adult.

Answer 3

Does an insect have a brain? No.

Not a true brain as in higher animals. It's a group of ganglia, just a few nerve cells. Some insects have one, most have two, others have three of these ganglia groups.

http://instruct1.cit.cornell.edu/Courses/ent201/content/anatomy2.pdf

Answer 4

yes they do have,,,,, but their brains are not developed like us..... almost all living organisms have brains,,, but in different forms lik earthworms have brain in form of pharyngeal gaglia,

Answer 5

Yes. It is just a few nerves that they use to control bodily movements and in which their instinctive behavior is stored. They are actually smarter than you might think, but they cannot reason.

Answer 6

Yes, they have a bunch of cells that control their motor functions. I don't think they'll be using tools anytime soon though.