0
Sympathetic responses are more widespread because of the way the efferent nerves (from spinal cord outward) are positioned. The autonomic system has two neurons between its spinal cord and the organ that it is modulating whereas the somatic system has only one.
The difference between the sympathetic and the parasympathetic is that in the case of sympathetic, the first nerve out of the spinal cord, called the preganglionic fiber is extremely short and ends relatively close to the spinal cord. Here, the preganglionic fiber synapses with on average of 10 postganglionic fibers which then moves onto effect a variety of different organs.
On the other hand, in the parasympathetic division the preganglionic nerve are extremely long and extends until it is almost at the organ. From there, it synapses with a very short post-synaptic nerve that then synapses an organ. The ratio in this case can be about 1:3 but usually is 1:1.
To sum things up, in the sympathetic division, the preganglionic fiber terminates very early and therefore has the "opportunity" to interact with a variety of nerves. On the other hand, the parasympathetic division has such a long preganglionic fiber that by the time it synapses its post ganglionic fiber, it is pretty much at the organ.
NE and epinephrine are secreted into the blood as part of the sympathetic response.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
The division of autonomic nervous system that controls the series of physiological responses that are collectively called the fight or flight response.?
Sympathetic division.
Are sweat glands parasympathetic or sympathetic?
They are sympathetic but an exception - ACh is released as a post-synaptic neurotransmitter rather than Adrenaline/Noradrenaline.Illicitinga parasympathetic response will not stimulate these neurons and therefore sweating is not a parasympathetic side effect.However, as post-synaptic sweat glands contain Muscarinic receptors and not adrenoceptors the administration of a non-selective Muscarinic agonist would result in both a parasympathetic response such as constriction of the pupil or decreased heart rate as well as sweating due to the activation of these sympathetic post-synaptic MAChR in the sweat glands.Atropine would reduce all parasympathetic responses and stop sweating.
What is a sympathetic person?
A sympathetic person is someone who feels pity of someone else.
The postganglionic sympathetic fiber originates from?
The postganglionic sympathetic fiber originates from PNS within a ganglion
What division of the autonomic nervous system that prepares the body for intense levels of activity and stressis the?
It's sympathetic division arouses its parsypathic division calms sympathetic division of the autonomic nervous system that arouses the body mobilizing it's energy in stressful situations.
Are the the thermoregulatory responses to increased heat are mediated by the sympathetic nervous division?
yes
What does adrenergic mean?
Adrenergic-- Activated by adrenalin (norepinephrine), loosely applied to the sympathetic nervous system responses.
What does the sympathetic nervous system?
This system controls autonomic functions. These are what are called the "fight or flight" response and the "rest and repose" responses.
The division of autonomic nervous system that controls the series of physiological responses that are collectively called the fight or flight response.?
Sympathetic division.
Why are hormonal responses generally longer lasting?
because.
In which types of interactions are the courts generally less sympathetic in sexual harassment actions?
(1) courts have been generally less sympathetic in supervisor to employee (as opposed to employee to employee) e-harassment;
What are alpha receptor antagonists?
If they are also known as alpha-adrenergic blocking drugs (i'm not sure if they are), then they prevent norepinephrine from producing sympathetic responses.
The British political party that was generally more sympathetic to the American cause?
The Whigs
How do the sympathetic and parasympathetic nervous systems operate antagonistically in emotional responses?
One system creates an emotional response, and the other dampens it. The sympathetic nervous system creates a short-term mobilizing response, and the parasympathetic nervous system dampens it in the long term.
Describe the meaning and importance of sympathetic tone and parasympathetic tone?
Both your sympathetic and parasympathetic neurons have a constant rate of firing under normal conditions. This is called their "tone", and it maintains the normal rate of your heartbeat, keeps your blood pressure within a normal range and such to maintain homeostasis. Of course, the sympathetic and parasympathetic firing rate changes greatly during fight-or-flight responses and such.
A driver comes upon an accident He jumps out of the car runs over and pulls out an injured passenger He feels full of energy What part of the drivers nervous system is responsible for this?
sympathetic
What does RSD nerve damage mean?
RSD is a chronic neurological syndrome characterized by: severe burning pain. pathological changes in bone and skin. excessive sweating. Reflex sympathetic dystrophy syndrome (RSDS), also known as complex regional pain syndrome, is a rare disorder of the sympathetic nervous system that is characterized by chronic, severe pain. Excessive or abnormal responses of portions of the sympathetic nervous system are thought to be responsible for the pain associated with reflex sympathetic dystrophy syndrome.
