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105 Cards in this Set
- Front
- Back
What is always present in the ANS? |
A synapse between the CNS and the effector organ |
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Where are post ganglionic neurons of the ANS located? |
Autonomic ganglia |
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Post ganglionic neurons are myelinated or unmyelinated? |
Unmyelinated |
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Why are post ganglionic neurons unmyelinated? |
They enter gray ramus |
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What part of the ANS maintains homeostasis during rest? |
Parasympathetic |
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Where are pre ganglionic neurons of the sympathetic division located? |
Lateral gray horn of segments T1 to L2 |
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Another name for the sympathetic division? |
Thoracolumbar division |
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Group of second order neurons of the sympathetic neurons lying along either side of the spinal cord |
Sympathetic chain ganglia |
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Group of second order neurons of the sympathetic division that innervate organs in the abdomino-pelvic region |
Collateral ganglia |
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Another name for collateral ganglia |
Pre-vertebral ganglia |
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Specialized group of second order neurons of the sympathetic division that release epinephrine and norepinephrine into the blood stream are located where? |
Adrenal medullae of adrenal glands on the kidney |
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Post-ganglionic nerve role regarding sweat secretion |
Increases |
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Sympathetic Post-ganglionic nerve role regarding gastric motility |
Decreases |
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Sympathetic Post-ganglionic nerve role regarding blood circulation in the skin |
Reduced circulation (vasoconstriction of blood vessels that supply the skin) |
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Sympathetic Post-ganglionic nerve role regarding skeletal muscle blood vessels |
Increased. Vasodilation of blood vessels that supply skeletal muscle) |
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Sympathetic Post-ganglionic nerve role regarding heart rate |
Increased |
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Sympathetic Post-ganglionic nerve role regarding pupils |
Dilation |
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Sympathetic Post-ganglionic nerve role regarding bronchi |
Dilation |
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What kind of drugs are used to treat an asthmatic patient |
Sympathomimetic drugs |
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Sympathetic Post-ganglionic nerve role regarding metabolism |
Increased (catabolism) |
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Increased metabolism |
Catabolism |
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Parasympathetic nerve role regarding sweat gland |
No action |
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Parasympathetic nerve role regarding gastric motility |
Increased (most important role) |
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Parasympathetic nerve role regarding blood vessels |
Vasodilation |
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Parasympathetic nerve role regarding heart rate |
Decreased |
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Parasympathetic nerve role regarding pupils |
Constriction |
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Parasympathetic nerve role regarding bronchi |
Constriction |
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Parasympathetic nerve role regarding metabolism |
Decreased metabolism (anabolism) |
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Decreased metabolism |
Anabolism |
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The splanchnic nerves are sympathetic/parasympathetic? |
Sympathetic |
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The splanchnic nerves originate where? |
Originate from the first order neurons (pre-ganglionic) |
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The splanchnic nerves are located where? |
In lower thoracic, lumbar, and sacral segments of the spinal cord |
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The splanchnic nerves carry nerves that synapse where? |
In the collateral ganglia (Pre-vertebral ganglia) |
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The splanchnic nerves control sympathetic functions of what organs? |
Organs in the abdomino-pelvic cavity |
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If the splanchnic nerves were injured what organ system would be affected? |
Digestive system |
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What are the three sympathetic ganglia of the sympathetic division? |
Sympathetic chain ganglia, collateral ganglia, adrenal medullae |
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What are the three major collateral ganglia of the sympathetic division? |
Celiac ganglia, superior mesenteric ganglia, inferior mesenteric ganglia |
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The celiac ganglion belongs to what division? |
Sympathetic. Specifically the collateral ganglia |
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Celiac ganglia innervate what organs? |
Stomach, liver, gall bladder and pancreas |
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Another name for the parasympathetic division? |
Craniosacral division |
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Where can the pre-ganglionic neurons of the parasympathetic division be found in the cranium? |
Cranial nerves III, VII, IX, and X |
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Where can the pre-ganglionic neurons of the parasympathetic division be found in the sacrum? |
S2-S4 and pelvic nerves (pelvic splanchnic nerves) |
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Four cranial outflows of post-ganglionic fibers of parasympathetic neurons |
Ciliary, pterygopalatine, submandibular, and otic ganglia |
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Sacral outflow of post-ganglionic fibers of parasympathetic nerves synapse at what organs? |
Synapse at intramural ganglion of the rectum, urinary bladder, kidney, and the reproductive organs |
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Intramural ganglion innervate what organs? |
Rectum, urinary bladder, kidney, and the reproductive organs |
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Splanchnic nerve is sympathetic/parasympathetic? |
Sympathetic |
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Pelvic nerve is sympathetic/parasympathetic? |
Parasympathetic |
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Intramural ganglion is sympathetic/parasympathetic? |
Parasympathetic |
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Pre-ganglionic of intramural ganglion? |
Pelvic nerve |
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Sympathetic activation is controlled by what part of the brain |
Sympathetic centers of the hypothalamus |
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Autonomic plexus definition |
A network that contains both sympathetic and parasympathetic nerves |
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Dual innervation definition |
Both sympathetic and parasympathetic nerves in an organ |
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6 autonomic plexuses |
Cardiac Pulmonary Celiac Superior mesenteric Inferior mesenteric Hypogastric |
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Celiac plexus contains what ganglia? |
Celiac ganglia |
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Hypogastric plexus contains what ganglia? |
Inferior mesenteric ganglia |
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Stimulation of alpha-1 receptors by nor-epinephrine would result in the release of what? |
Intracellular calcium stores (epsp) |
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Which neurotransmitter stimulates alpha-1 receptors that results in the release of intracellular calcium stores? |
Nor-epinephrine |
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Nor-epinephrine stimulates which receptor which results in the release of intracellular calcium stores? |
Alpha-1 |
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stimulation of the beta-1 receptors on the heart muscle causes the formation of what? |
Cyclic AMP |
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Cyclic AMP is released by the simulation of what receptor? |
Beta-1 |
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where are beta-1 receptors found? |
The heart |
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Cyclic AMP has what effect on the heart? |
Increases the heart rate and increase the force of cardiac muscle contraction |
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Stimulation of beta-2 receptors via an inhaler causes what? |
Bronchodilation |
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Beta receptor causes what? |
Vasoconstriction |
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What drug is used to treat hypertension? |
Beta-blockers (sympathetic blocking agent) |
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Drugs that have an effect similar to those of nor-epinephrine? |
Sympathomimetic drugs |
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Sympathomimetic drugs have a similar effect to what? |
Nor-epinephrine |
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Drugs that have a similar effect to those of parasympathetic |
Parasympathomimetic drugs |
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Parasympathomimetic drugs have a similar effect to what? |
Parasympathetic |
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What drugs target muscarinic receptors? |
Parasympathomimetic drugs |
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Where do mushroom toxins bind to? |
Muscarine receptors |
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Act as the main end-receptor stimulated by acetylcholine released from postganglionic fibers in the parasympathetic nervous system |
Muscarinic receptors |
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Muscarinic receptors definition |
Act as the main end-receptor stimulated by acetylcholine released from postganglionic fibers in the parasympathetic nervous system |
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Parasympathetic stimulation causes what in the lungs? |
Bronchoconstriction |
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Toxin from muscarinic mushroom causes what in the lungs |
Bronchoconstriction that leads to difficulty breathing |
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Neurotransmitter that may link to schizophrenia |
Dopamine |
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What neurotransmitter is released in presynaptic facilitation? |
Serotonin |
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Serotonin is released in pre/post synaptic facilitation |
Pre |
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Drugs that block secretion of ____ in the CNS can cause depression |
Nor-epinephrine |
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Drugs that block the secretion of nor-epinephrine in the CNS can cause what? |
Depression |
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What is useful in treating diarrhea? |
Parasympathetic blocking agents |
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Why are parasympathetic blocking agents useful in treating diarrhea? |
They block the role of parasympathetic in digestive function |
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Sweat glands contain what kind of receptors? |
Cholinergic |
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Dual innervation refers to what? |
An organ receiving both sympathetic and parasympathetic nerves. |
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Autonomic tone function |
Allows ANS neurons to increase or decrease their activity, providing a range of control options |
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Function that allows ANS neurons to increase and decrease their activity, providing a range of control options |
Autonomic tone |
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Most post-ganglionic of the sympathetic division release what? |
Nor-epinephrine |
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Only post-ganglionic sympathetic nerves for sweat glands release what? |
Acetylcholine |
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Acetylcholine released in post-ganglionic sympathetic nerves for what? |
Sweat glands |
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Pre-ganglionic sympathetic nerves release what? |
Acetylcholine |
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Both the pre-ganglionic and the post-ganglionic of the parasympathetic release what? |
Acetylcholine |
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Acetylcholine is released in what ANS systems? (specifically, which ganglia) |
Post-ganglionic sympathetic nerves for sweat glands, and both pre and post-ganglionic of the parasympathetic |
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Nicotinic receptors are part of which ANS nerve? |
Parasympathetic |
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How do nicotinic receptors produce an epsp? |
Opening sodium channels |
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Where are nicotinic receptors found? |
NMJ. Found in both ANS and SNS |
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What activates nicotinic receptors |
Acetylcholine |
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Muscarinic receptors are part of which ANS nerve? |
Parasympathetic |
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Muscarinic receptors are EPSP or IPSP? |
Both |
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Muscarinic receptors are activated by what? |
Acetylcholine |
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Where are muscarinic receptors found? |
Surface of smooth muscle |
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Examples of visceral reflexes |
Defecation, vomiting, coughing, swallowing, papillary, urination, and ejaculation in response to tactile stimuli |
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Defecation, vomiting, coughing, swallowing, papillary, urination, and ejaculation in response to tactile stimuli are examples of what kind of reflex? |
Visceral reflex |
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During sleep ____ activity increases and ____ activity decreases |
Parasympathetic. Sympathetic. |
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Increasing activity of parasympathetic division has what effect on the heart? |
Heart rate and blood pressure decrease |
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Increasing of activity of parasympathetic division has what effect on the penis? |
Erection due to vasodilation |