nerves
Yes, unmyelinated axons are present in the cerebral cortex. While many neurons in the cerebral cortex have myelinated axons, some interneurons and shorter local circuit neurons have unmyelinated axons. These unmyelinated axons play a role in the local processing and communication within the cortex.
Oligodendrocytes
The adrenal medulla has many similarities with post-ganglionic sympathetic neurons, they release catecholamine because medullary cells are derived from the neural crest and, as such, are simply modified neurons. The adrenal gland releases epinephrine, norepinephrine and dopamine in response to neural not hormonal signals just like postganglionic neurons. The most significant different between adrenal medulla cells and true postganglionic sympathetic neurons is the absence of axons. The neurotrasmitter has become a hormone and is released into the blood.
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There are two basic neural speeds: fast-conducting myelinated neurons, which have speeds up to 120 m/s, and slow-conducting unmyelinated neurons, with speeds around 2 m/s.
Axons
Yes, unmyelinated axons are present in the cerebral cortex. While many neurons in the cerebral cortex have myelinated axons, some interneurons and shorter local circuit neurons have unmyelinated axons. These unmyelinated axons play a role in the local processing and communication within the cortex.
The ones carrying the input are the dendrites, the ones carrying the output are the axons.
Oligodendrocytes
The adrenal medulla has many similarities with post-ganglionic sympathetic neurons, they release catecholamine because medullary cells are derived from the neural crest and, as such, are simply modified neurons. The adrenal gland releases epinephrine, norepinephrine and dopamine in response to neural not hormonal signals just like postganglionic neurons. The most significant different between adrenal medulla cells and true postganglionic sympathetic neurons is the absence of axons. The neurotrasmitter has become a hormone and is released into the blood.
Many examples lies for neural networks in real life; most knew among others are the OCR or character recognition software; even the retina and finger prints recognizers are based on neural networks
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Neural convergence refers to the phenomenon of multiple sensory receptors giving information to a smaller number of neural cells. For example, in the retinal periphery, many photoreceptors converge on a smaller number of ganglion cells so that the brain doesn't have to process inputs from each photoreceptor.
The autonomic reflex contains two. (preganglionic and postganglionic)
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