Autonomic nervous system

Morgan Morgan
Flashcards by Morgan Morgan, updated more than 1 year ago
Morgan Morgan
Created by Morgan Morgan over 7 years ago
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University Pod Year 1 Flashcards on Autonomic nervous system, created by Morgan Morgan on 05/01/2014.

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Question Answer
Two parts of the nervous system? Somatic and autonomic nervous system
Somatic nervous system function? Voluntary and reflex control of skeletal muscle.
Autonomic nervous system functions? Reflex control of smooth and cardiac muscle. Regulation of body's internal environment.
Autonomic nervous system operates through? reflex arcs.
Examples of afferent inputs Temperature receptors Pain receptors Chemoreceptors Blood pressure receptors
These receptors are found in the ? Heart, blood vessels, lungs, kidneys, gut,bladder
Outputs of the ANS? ......... nerve fibres are autonomic nerve fibres. efferent
Two divisions of the ANS? Sympathetic and parasympathetic nervous systems
Sympathetic nerve fibres leave the spinal cord at .......and........segmental levels. This is the.............................division of the ANS. thoracic and lumbar. Thoracolumbar
Parasympathetic nerve fibres leave the spinal cord at........and..........segmental levels. cranial and sacral.
Both divisions of the ans supply the.....organs. same.
Both divisions also have a .... .................output pathway. two neurone
.............ganglion is a collection of nerve cell bodies in ANS, where synapses between the two neurones occur. Autonomic
Sympathetic Pre-ganglionic nerve fibre - ...... Post-ganglionic nerve fibre - ......... Short Long
Parasympathetic Pre-ganglionic nerve fibre - ...... Post-ganglionic nerve fibre - ......... Long Short
Both divisions use .............at the synapses in the ganglion acetylcholine
At the target organ, the parasympathetic division uses .................... acetylcholine
At the target organ, the sympathetic division uses........... Noradrenaline
In most cases, both divisions operate............ antagonistically, i.e. they have opposite actions
Sympathetic ns .........heart rate. Parasympathetic ns............heart rate. increases decreases In a few cases, both divisions work in parallel
Adrenal medulla is the .....portion of the ......gland. middle, adrenal
Sympathetic ns is generally energy.............. expending.
Parasympathetic ns is generally energy........... conserving.
Parasympathetic ns.........at rest dominates
The sympathetic ns becomes...... when energy expenditure is required. active
Neurotransmitters can have ............actions on..............tissues. different
2 different noradrenaline receptors? a receptors and b receptors
2 types of acetylcholine receptors? Nicotinic receptors Muscarinic receptors
Nicotinic receptors are found in ? autonomic ganglia and at skeletal neuromuscular junction.
Muscarinic receptors found at parasympathetic target organs.
Different drugs can block or activate different receptors. ...............is a b blocker. ......................is a muscarinic blocker. Propranolol Atropine
Fight or flight response results in.............sympathetic output, coordinated by the............... increased, hypothalamus.
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