Brain Lobe

_Lobe of the brain_

Lobes of the brain are groups of brain cells that together provide a specific function and a specific direction for the transmission of nerve impulses. The cerebral lobes have differences in composition, function and circulation. Depending on this, motor (motor), premotor (coordinating voluntary movements), sensory (sensitive) and associative (providing integration and coordination of brain activity) lobes are distinguished. Usually in anatomy there are seven lobes, but the boundaries between them are not absolute. As a rule, only the main ones are described: frontal, parietal, temporal, occipital, insular and basal (the back of the cerebral hemispheres).

The frontal lobe is the largest lobe, is triangular in shape and extends into the interorbital space. She is involved in the organization of movements, movements associated with speech.

The parietal lobe has an average mass and occupies a completely medial position of the cerebral hemisphere. Directed downwards and backwards, contains 21 convolutions. Participates in the coordination of hand movements, “reading” speech, tactile sensitivity, the implementation of complex forms of memory, higher forms of gnosis (the ability to recognize), praxis (the ability to perform actions). It contains the gyri and grooves of the superior parietal lobule, which is called the Heschl sublobe, and exercises memory, control over words and their grammar. Also, part of the superior parietal contains the convolutions of the inferior parietal lobe, which constitutes the plane of expression of messages. This is the area responsible for the kinesthetic perception of external objects, the center of reading and writing, located in