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Module 13
Section 9: Medication actions on the nervous system
Question | Answer |
---|---|
What is the function of the somatic nervous system (SoNS)? | Regulates, or controls, voluntary muscles |
Which neurotransmitter stimulates receptors on muscles to make them move? | Acetylcholine (Ach) |
What is the function of the autonomic nervous system (ANS)? | Controls involuntary functions such as blood pressure, digestion, breathing, and pupil dilation or constriction |
Examples of the fight-or-flight reaction of the sympathetic nervous system | Heart rate increases Bronchioles dilate Pupils dilate Digestion slows |
What allows the sympathetic and parasympathetic nervous systems to balance each other out? | Dual innervation of organs and tissues |
What are the effects of medications that stimulate alpha receptors? | Excitation, stimulation, or constriction of the organ or tissue |
What are the effects of medications that stimulate beta receptors? | Relaxation, inhibition, or dilation of the organ or tissue except for the heart. Stimulation of beta receptors in the heart increases blood pressure. |
What is the effect of medications that stimulate muscarinic receptors? | Muscle contration |
What are the effects of medications that inhibit muscarinic receptors? | Dry mouth, dry eyes, pupil dilation, urinary retention, and constipation |
Example of anticholinergic medication | Diphenhydramine |