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Which organ consists of modified postganglionic neurons without dendrities or axons?
Wiki User
∙ 11y ago
Adrenal Glands
Wiki User
∙ 11y ago
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What is the chemical secreted into a gap between neurons at a synapse?
There is not just one chemical secreted into synapses (the gaps between neurons); instead, there are many chemicals secreted from the terminal buttons of neurons into the synapses. They are called "neurotransmitters."
A type of tissue that sends electrical signals through the body?
Nervous tissue is composed of neurons that use electrical signals to transfer impulses throughout the body.
What is snapse?
A "synapse" is the gap between neurons in the brain. Since the brain is not hard wired, and the neurons are only connected by a chemical synapse, the brain can be "re-wired" to act in a way it did not before. This is how we are able to learn and perfect new skills.
What are part icles called that move really fast?
Certainly not the neurons in your brain...learn English.
Physiological characteristics highly developed in neurons?
receive stimuli (irritability), and conduct waves of excitation, or impulses, to all parts of the body (conductivity)
Which autonomic neurons release norepinephrine as a neurotransmitte?
Sympathetic postganglionic neurons release norepinephrine,
When a preganglionic neuron innervates several postganglionic neurons it is called what?
divergence
Is acetylcholine the substance released by the axon terminals of both somatic motor neurons and postganglionic parasympathetic neurons?
True
Is the adrenal medulla a misplaced sympathetic ganglion?
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.
Does the gray rami communicans contain fibers of a preganglionic or postganglionic neurons?
could be preganglionic
Which neurons are classified as an adrenergic fiber?
The neuron classified as an adrenergic fiber is the sympathetic postganglionic neuron.
What are the differences between preganglionic and postganglionic neurons?
You have a really good question. Studying the nervous system can be overwhelming and quit confusing. Preganglionic Neurons come from the CNS to the Ganglion ( mass of neuron cell bodies and dendrites) and Postganglionic neurons leave the ganglion and head toward the effector organ ( smooth muscle, glands, etc..).
Which nervous system subdivision is a chain of two motor neurons consisting of a preganglionic and a postganglionic neuron?
autonomic
As part of which nervous system do postganglionic neurons release norepinephrine?
Sympathetic nervous system, which is part of autonomic nervous system.
Postganglionic fibers that innervate targets in the body wall or thoracic cavity originate on neurons within?
sympathetic chain ganglia
Where are post ganglionic neurons cell bodies located?
Postganglionic neuron cell body lies outside the CNS in an autonomic ganglion
What tissues consists of neurons?
nervous
