UB ANA 113 Lec 18 B Word Scramble
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Question | Answer |
Autonomic Nervous System | motor system. Controls cardiac muscle, smooth muscle, glands. 2 Neuron chain. |
Where are the centers for the ANS? | In PNS and CNS. Hypothalamus, brainstem, spinal cord |
Somatic motor | skeletal muscle. 1 neuron(motor). Thick heavily myelinated |
Visceral motor | ANS - glands, smooth, and cardiac muscle. 2 Neuron chain. Pre and post ganglionic. Thin and unmyelinated. |
2 Divisions of ANS and differences | Sympathetic and parasympathetic. Differ in location of pre+post neuron, neurotransmitter, effect |
Sympathetic ... where is the pre neuron | T1-L2 = thoracolumbar |
Sympathetic... where is the post neuron | sympathetic chain or prevertebral ganglia(in front of aorta) |
Splanchnic nerve | postganglionic neuron of sympathetic synapases with another post ganglionic |
sympathetic preganglionic neurotransmitter | acetylcholine |
sympathetic postganlionic neurotransmitter | norepinephrine |
Sympathetic general effect | flight or fight |
Adrenal Medulla | on top of kidneys. secretes epinephrine/norepinephrine. Cells derived from post-gang neurons |
parasympathetic 1st neuron | "craniosacral" - originates along here. Nuclei of cranial nerves 3(eye), 7(lacrimal), 9(salivary), 10(heart/stomach/lungs, Sacral (2,3,4) |
parasympathetic post ganglionic | on or near the target organ |
neurotransmitter of parasympathetic | acetylcholine |
general effect of parasympathetic | rest and digest |
heart rate up | sympathetic |
herat rate down | parasympathetic |
smooth muscles of bronchioles dialate | sympathetic |
smooth muscles of bronchioles constrict | parasympathetic |
urinary bladder relax to fill | sympathetic |
urinary bladder expel | parasympathetic |
digestive tract increase movement | parasympathetic |
digestive tract decrease movement (reduce peristalsis) | sympathetic |
sweat glands stimulate | sympathetic |
arrector pili muscles create goosebumps | sympathetic |
eye dialates (contract muscles of iris) | sympathetic |
pupil constricts (muscles of iris relax) | parasympathetic |
vascoconstriction | making blood more available for heart and skeletal muscle - associated with sympathetic |
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