464784
Description
Flashcards by Morgan Morgan, updated more than 1 year ago
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Created by Morgan Morgan
over 10 years ago
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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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