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31 Cards in this Set
- Front
- Back
Agonist
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directly activates receptor
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Antagonist
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prevents receptor activation
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Direct acting
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stimulates receptor
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Indirect acting
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stimulates release of NT
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Sympathomimetic
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adrenergic (SNS)
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Sympatholytic
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antiadrenergic
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Parasympathomimetic
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cholinergic (PSNS)
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Parasympatholytic
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anticholinergic
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Neurons
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communication center
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Afferent transmission
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sensory neurons, impulses TOWARD the spinal cord & brain
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Efferent transmission
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motor neurons, impluses AWAY FROM the spinal cord, brain & glandular tissue
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Multipolar Efferent transmission
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-motor neurons, impluses AWAY FROM the spinal cord, brain & glandular tissue
-one axon with several dendrites |
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Bipolar Efferent transmission
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-motor neurons, impluses AWAY FROM the spinal cord, brain & glandular tissue
-one axon and one dendrite |
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Unipolar Efferent transmission
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-motor neurons, impluses AWAY FROM the spinal cord, brain & glandular tissue
-one axon and NO dendrites |
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Axons
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an extension of the neuron, they conduct the transmission of information, afferently or efferently, to different parts of the body through the use of AP's.
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All PREganglionic neurons of the PSNS and SNS release __________ as their NT.
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ACh
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All POSTganglionic neurons of the PSNS release __________ as the NT.
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ACh
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Most POSTganglionic neurons of the SNS release __________ as their NT.
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NE
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__________ is the main NT released bye the adrenal medulla (which is ONLY a feature of the SNS and is considered prejunctional).
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Epi
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ALL somatic motor neurons to the skeletal muscles directly release __________ as their NT.
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ACh
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After PREganglionic neurons of the PSNS and SNS release ACh, the ACh interacts with __________.
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Nicotinic n receptors, located on the cell bodies of all postganglionic neurons of the PSNS and SNS. Nicotinic n receptors are also found on the cells of he adrenal medulla.
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After Nicotinic n receptors of the PSNS release ACh, the ACh reacts with __________.
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Muscarinic receptor
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After Nicotinic n receptor of the SNS releases NE, the NE reacts with __________.
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alpha or beta receptors
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After Nicotinic n receptor of the SNS releases ACh, the ACh reacts with __________.
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Muscarinic receptors
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After Nicotinic n receptors of the SNS/adrenal medulla and releases Epi, the Epi reacts with __________.
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alpa or beta receptors
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SNS / Adrenergic Target Organs: Alpha 1 receptor activation.
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Alpha 1
-Eye: contr'n of radial & sphincter muscle & increase in pupil size. -Arterioles: contr'n of arterioles (skin, viscera mucous membrane). -Veins: venous constriction. -Sex organ: male ejaculation. -Prostate: contr'n of prostate. -Bladder: contr'n of trigone & sphincter muscle in bladder. |
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SNS / Adrenergic Target Organs: Alpha 2 receptor activation.
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-Presynaptic nerve terminals: inhibition of transmitter release (no actual target organ).
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SNS / Adrenergic Target Organs: Beta 1 receptor activation.
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-Heart: increased HR, force of contraction, AV conduction and velocity.
-Kidney: renin release (releases more salt & aldosterone which leads to more water/blood volume) |
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SNS / Adrenergic Target Organs: Beta 2 receptor activation.
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-Arterioles: dilation of arterioles in heart, lung, and skeletal muscle.
-Lungs: dilation of the bronchi in the lungs. -Uterus: relaxation of the uterus. -Liver: glycogenolysis in the liver (breakdown glycogen for glucose). -Skeletal muscle: enhance contr'n of skeletal muscle and glycogenolysis. |
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SNS / Adrenergic Target Organs: Dopamine receptor activation.
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-Kidney: dilation of kidney vasculature (used for shock).
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Additional Beta 2
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-Bronchial
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