Search results
Results from the WOW.Com Content Network
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord.The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts.
Beta-Endorphin is a relatively well-known example of a peptide neurotransmitter because it engages in highly specific interactions with opioid receptors in the central nervous system. Single ions (such as synaptically released zinc ) are also considered neurotransmitters by some, [ 40 ] as well as some gaseous molecules such as nitric oxide (NO ...
Microglia are a type of glial cell located throughout the brain and spinal cord of the central nervous system (CNS). [1] Microglia account for about 10–15% of cells found within the brain. [2] As the resident macrophage cells, they act as the first and main form of active immune defense in the CNS. [3]
The central nervous system (CNS), which includes the brain and spinal cord, is a sensitive system with limited capacity for regeneration. In that regard, the concept of "immune privilege" within the CNS was once thought to be critical in limiting inflammation.
These processes have the ability to take up various neurotransmitters, such as norepinephrine (NE) and glutamate, and perform various other functions to maintain chemical and electrical homeostasis in the neuronal environment. Constriction has been shown in vitro to occur when NE is placed in the synapse and is taken up by astrocyte receptors.
The nervous system of vertebrates (including humans) is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). [16] The CNS is the major division, and consists of the brain and the spinal cord. [16] The spinal canal contains the spinal cord, while the cranial cavity contains the brain.
the heart is able to regulate its output, to some extent, in accordance with the degree of saturation of the arterial blood ... we suggest that, in the body (either in the heart muscle itself or in the nervous system), there is some mechanism which causes a slowing of the circulation as soon as a serious degree of unsaturation occurs, and vice ...
Autonomic nervous system, showing splanchnic nerves in middle, and the vagus nerve as "X" in blue. The heart and organs below in list to right are regarded as viscera. The autonomic nervous system has been classically divided into the sympathetic nervous system and parasympathetic nervous system only (i.e., exclusively motor).