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Autonomic system
terms
| Question | Answer |
|---|---|
| sensory and motor divsions each with somatic and visceral subdivisions | PNS |
| signals to CNS | sensory(afferent) division |
| receptors from skin,muscle, bones, joints | somatic sensory division |
| viscera of thoracic and abdominal cavities | visceral sensory division |
| CNS to gland and muscle cells | motor (efferent) division |
| to glands, cardiac, smooth muscle | visceral motor division |
| fight or flight | sympathetic division |
| rest and digest | parasympathetic division |
| control over involuntary functions | biofeedback |
| unconscious autonomic response | visceral reflex |
| autonomic activity requires | visceral reflex arc |
| carries out the end response | effector |
| both system are referred to as | autonomic tone |
| neither division has | excitatory or inhibitory effects |
| control nuclei | hypothalmus and brainstem |
| myelinated axon to skeletal muscle | somatic pathway |
| travel across two nerve fibers | autonomic pathways |
| nuerosoma in the brainstem | preganglionic |
| myelinated second neuron secetes neurotransmitter | ACH to stimulate |
| unmyelinated secon neuron leaves ganglion and extends | target organ or cells |
| secretes Ach or | norepinephrine (NE) |
| preganglionic somas are in the | lateral horn |
| axons exit via | spinal nerves |
| paravertebral gamglion connected to spinal nerve | communicating rami |
| preganglionic fibers to ganglion | white communicating ramus |
| postganglionic fibers leave ganglion | gray communicating ramus |
| post is longer than pre fibers | longer |
| stomach, spleen, liver, pancreas, etc, | celiac ganglia |
| intestine, colon , kidneys | superior mesenteric ganglia |
| rectum, urinary bladder, reproductive organs | inferior mesenteric ganglia |
| scretes steroids | adrenal cortex |
| secretes catecholamines into blood | medulla |
| aderenaline | epinephrine |
| noradrenaline | norepinephrine |
| control lens and pupil, cilliary | lll, oculomotor |
| glands, pterygopalatine | Vll, facial |
| inferior is submandibular | facial |
| last gland is parotid, and otic | Ix, glossopharyngeal |
| smooth muscle not brainstem or spinal cord | enteric nervous system |
| preganglionic secretes in both | ACH |
| postganglionic secretes in P division | ACH |
| binding of Ach to nicotininc | excitatory |
| sympathetic postganglionic fibers | norepinephrine |
| Ach is broken down by | ACHe |
| Ne is broken down by | MAO or COMT |
| blood vessel contricted | vasomotor tone |
| Ans influenced by | CNS |
| passes throughout sympathetic ganglia | splanchnic |
| preganglionic is | myelinated |
| relases nuerotransmitters molecules | preganglionic sympthetic fiber |
| postganglionic is | unmyelinated |
| autonomic fibers on target cells | excitory or inhibit, alway excited |
| order of visceral reflex | sensory receptor, affernet nerve , interneuron, efferent nerve fiber, gland |
| vision | oculomotor |
| ANS controls except | skeltal muscle in the rectus abdomin |
| fibers travel in | vagus |
| reganglionic travels in | adrenal medulla |
| heart rate below intrisinc rate | parasympathetic tone |
| not under control of ANS | adrenal medulla |
| adrenal medulla secretes | epinephrine |
| baroceptor in arteries | heart decreses beats |
Created by:
edith1234
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