CORPUS PYRAMIDALE Meaning and
Definition
-
The term "corpus pyramidale" refers to a prominent anatomical structure present in the brain of humans and certain other mammalian species. It is specifically located in the primary motor cortex, which is responsible for the voluntary control of movement.
The corpus pyramidale, also known as the pyramidal cell layer or pyramid layer, is a layer within the primary motor cortex that contains large pyramidal cells. These cells have a distinct triangular or pyramidal shape, lending the layer its name. These neurons are characterized by their long, vertically oriented dendrites, which extend towards the brain's surface, and their axons, which extend downwards towards the spinal cord and brainstem.
The corpus pyramidale plays a critical role in motor control. The pyramidal cells in this layer are involved in the generation and transmission of nerve impulses that initiate voluntary muscle movements. As such, they serve as the primary output neurons of the primary motor cortex. They relay motor signals to the spinal cord and brainstem via their axons, which form the corticospinal and corticobulbar tracts.
Overall, the corpus pyramidale is an essential component of the neural circuitry responsible for motor function. Its distinct cellular composition and connections with other brain regions contribute to the precision and coordination of voluntary movements. Dysfunction or damage to the corpus pyramidale can result in motor impairments or disorders, such as paralysis, paresis, or spasticity.
-
Pyramis medullae oblongatae.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for CORPUS PYRAMIDALE
- xorpus pyramidale
- vorpus pyramidale
- forpus pyramidale
- dorpus pyramidale
- cirpus pyramidale
- ckrpus pyramidale
- clrpus pyramidale
- cprpus pyramidale
- c0rpus pyramidale
- c9rpus pyramidale
- coepus pyramidale
- codpus pyramidale
- cofpus pyramidale
- cotpus pyramidale
- co5pus pyramidale
- co4pus pyramidale
- corous pyramidale
- corlus pyramidale
- cor-us pyramidale
- cor0us pyramidale
Etymology of CORPUS PYRAMIDALE
The word "corpus pyramidale" is formed by combining two Latin words: "corpus" and "pyramidale".
1. "Corpus": In Latin, "corpus" means "body" or "substance". It is derived from the Proto-Indo-European root "*krep-", meaning "body" or "form".
2. "Pyramidale": The word "pyramidale" is the neuter form of the Latin adjective "pyramidalis", which means "resembling a pyramid". It comes from the noun "pyramis" or "pyramidis", which is derived from the Greek word "πυραμίς" (pyramis) meaning "pyramid".
Therefore, when combined, "corpus pyramidale" refers to a "pyramid-shaped body" or "substance".
