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Pharm def ch 17
HCC Pharm def ch 17 definitions
| Question | Answer |
|---|---|
| a-adrenergic receptors | A class of adrenergic receptors that are further subdivided into a1 and a2-adrenergic receptors, occur on the surface of postsynaptic effector cells, and are differentiated by their anatomic location in the tissues, muscles, and organs regulated by |
| Adrenergic receptors | Receptor sites for the sympathetic neurotransmitters norepinephrine and epinephrine, (p. 270) |
| Adrenergics | Drugs that stimulate the sympathetic nervous system. They are also referred to as adrenergic agonists or sympathomimetics because they mimic the effects of the sympathetic neurotransmitters norepinephrine and epinephrine,(p. 270) |
| Autonomic functions | Bodily functions that are involuntary and result from physiologic activity of the autonomic nervous system. The functions often occur in pairs of opposing actions between the sympathetic and parasympathetic divisions of the autonomic nervous system, (p. |
| Autonomic nervous system (ANS) | A branch of the peripheral nervous system that controls autonomic bodily functions. It consists of the sympathetic nervous system and the parasympathetic nervous system, (p. 270) |
| B-adrenergic receptors | Receptors located on postsynaptic effector cells of tissues, muscles, and organs stimulated by specific autonomic nerve fibers. B1 adrenergic receptors are located primarily in the heart, whereas (B2-adrenergic receptors are located in the smooth muscle |
| Catecholamines | Substances that can produce a sympathomimetic response. They are either endogenous catecholamines (such as epinephrine, norepinephrine, and dopamine) or synthetic catecholamine drugs (such as dobutamine).(p. 270) |
| Dopaminergic receptor | A third type of adrenergic receptor (in addition to a-adrenergic and (B-adrenergic receptors) located in various tissues and both endogenous and synthetic (drug) forms, (p. 270)organs and activated by the binding of the neurotransmitter dopamine, which oc |
| Mydriasis | Pupillary dilation, whether natural or drug induced, (p. 273)(physiologic) |
| Ophthalmics | Topically applied eye medications, (p. 273) |
| Positive chronotropic effect | An increase in heart rate,(p. 273) |
| Positive dromotropic effect | An increase in the conduction of cardiac electrical impulses through the atrioventricular node, which results in the transfer of nerve action potentials from the atria to the ventricles. This ultimately leads to a systolic heartbeat (ventricular contract |
| Positive inotropic | An increase in the force of contraction of the heart muscle (myocardium), (p. 273) |
| Synaptic cleft | The space either between two adjacent nerve cell membranes or between a nerve cell membrane and an effector organ cell membrane, (p. 271) |
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laura999
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