Search results
Oct 20, 2023 · The left brain largely receives connections from the parasympathetic system, while the right brain largely receives connections from the sympathetic system (Conesa 1995). Together, the two halves of the brain work with the rest of the nervous system to maintain a homeostatic balance.
- Brain Lateralization
Hemispheric lateralization is the idea that each hemisphere...
- Brain Lateralization
- Introduction
- Pyramidal Tracts
- Extrapyramidal Tracts
The central nervous system uses ascending and descending pathways to communicate with the external environment.
The pyramidal tracts are named as such due to their course through the pyramids of the medulla oblongata. The pyramidal tracts are responsible for the conscious, voluntary control of the body and face muscles. They can be divided into two tracts.
The extrapyramidal tracts all originate in the brainstem and do not pass through the pyramids.These tracts all carry motor fibres to the spinal cord that allow for unconscious, reflexive or responsive movement of muscles to control balance, locomotion, posture and tone.The contralateral organization of the forebrain (Latin: contra‚ against; latus‚ side; lateral‚ sided) is the property that the hemispheres of the cerebrum and the thalamus represent mainly the contralateral side of the body. Consequently, the left side of the forebrain mostly represents the right side of the body, and the right side of ...
Aug 16, 2023 · The gracilis and cuneate fasciculi, also known as the dorsal/posterior columns, are two ascending pathways located side-by-side in the posterior funiculus of the spinal cord. They carry fine and discriminative touch as well as proprioceptive sensations.
- Medical Content
- 33 min
For neurologists and most medical professionals, the fact that each half of the body is controlled by the opposite side of the brain informs everyday practice. Even patients and their families readily accept that a left hemiplegia is due to a stroke in the right hemisphere.
- Serge Vulliemoz, Olivier Raineteau, Denis Jabaudon
- 2005
Feb 21, 2024 · These terms describe positions towards the front (anterior) and back (posterior) of the body, with respect to the organism’s forward motion. In humans, the chest is anterior, while the back is posterior. In cats, for example, the head is anterior while the tail is posterior.
Feb 7, 2013 · Background. Each person's brain is divided into two sides—the left and right hemispheres. In some cases, one hemisphere may be more active than the other during a certain activity. For...
