Neurons have a large metabolically active cell body with short dendrites on one side and a long axon on the other. Axons synapse with the cell bodies and/or dendrites of adjacent or more distant neurons. Axons are sheathed in myelin made by oligodendrocytes in the CNS and Schwann cells in ...
Typically, a neuron is composed of a cell body, also called a soma, and neuronal bodies that extend out from the body and include dendrites and axons. Neurons are commonly classified according to their function or their structure. Functionally, they are known as afferent, conveying i...
Cell Membrane The essential feature of every cell is the presence of a membrane (=plasma membrane), which defines its boundaries. The cell membrane also limits the boundaries of cytoplasmic organelles such as mitochondria, nucleus, endoplasmic reticulum, Golgi bodies, lysosomes, etc. Not only do ...
(2011) Heterogeneity of the Mechanisms of Nerve Cell Damage in Demyelinating Autoimmune Diseases of the CNS. Neuroscience and Behavioral Physiology 41 , 364-374 /Abdurasulova, I.N. and Klimenko, V.M., 2011b. Heterogeneity of the mechanisms of nerve cell damage in demyelinating autoimmune ...
Fill in the blank. ___ are found in the CNS and bind axons and blood vessels to each other. What cell bodies are found in the lateral horn? (a) cell bodies of neurons processing sensory inputs (b) cell bodies of somatic motor neurons (c) cell bodies of ...
Thus, a stimulus that induces membrane depolarization, applied to a certain point on a nerve fiber, opens a sodium channel, resulting in an influx of sodium ion into the cell according to the concentration and potential gradient across the cell membrane. This leads to AP production in a self...
Axonal pruning during development within the CNS of Drosophila, particularly the olfactory system and the mushroom bodies, provide some examples [26–29] although this development has not strictly been shown to have activity-dependent critical periods. Additionally, studies on neural rearrangements during...
mutations in the Cu/Zn superoxide dismutase 1 (SOD1) gene2. Hallmark pathological features in sporadic and familial ALS include the presence of axonal spheroids and perikaryal accumulation of inclusion bodies comprising neuronal intermediate filament proteins, such as neurofilaments and peripherin3,4....
In addition, the reaction within the neuron cell body begins: this is characterized by cell soma hypertrophy, displacement of the nucleus to an eccentric position, and dissolution of Nissl bodies. 3. Wallerian degeneration is well underway within a week of injury. Soluble factors produced by ...
Intracranial malignant peripheral nerve sheath tumors (MPNST) are a rare heterogeneous group of tumors affecting a wide range of age groups. Unlike their extracranial counterparts, these tumors appear to have a predilection for male persons and are less likely to be associated with neurofibromatosis(13...