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MIOSIS
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Irregular inflected form: mioses
I. (noun)
Sense 1
Meaning:
Reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
Synonyms:
light reflex; miosis; myosis; pupillary reflex
Classified under:
Nouns denoting acts or actions
Hypernyms ("miosis" is a kind of...):
inborn reflex; innate reflex; instinctive reflex; physiological reaction; reflex; reflex action; reflex response; unconditioned reflex (an automatic instinctive unlearned reaction to a stimulus)
Derivation:
miotic (of or relating to or causing constriction of the pupil of the eye)
Sense 2
Meaning:
(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
Synonyms:
meiosis; miosis; reduction division
Classified under:
Nouns denoting natural processes
Hypernyms ("miosis" is a kind of...):
cell division; cellular division (the process in reproduction and growth by which a cell divides to form daughter cells)
Meronyms (parts of "miosis"):
anaphase (the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle)
cytokinesis (organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells)
karyokinesis (organic process consisting of the division of the nucleus of a cell during mitosis or meiosis)
metaphase (the second stage of meiosis)
prophase (the first stage of meiosis)
segregation ((genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes)
telophase (the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle)
Domain category:
genetic science; genetics (the branch of biology that studies heredity and variation in organisms)
Hyponyms (each of the following is a kind of "miosis"):
nondisjunction (meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells)
Context examples:
Stimulation of the mu receptors produces the typical narcotic effects of analgesia, miosis, euphoria, respiratory depression, sedation, physical dependence and bradycardia.
(Dihydrocodeine Bitartrate, NCI Thesaurus)
Additional pharmacological effects of fentanyl include anxiolysis, euphoria, feelings of relaxation, respiratory depression, constipation, miosis, and cough suppression.
(Fentanyl citrate, NCI Thesaurus)
Naloxone binds to opioid receptors in the CNS in a competitive manner, reversing or inhibiting characteristic opioid effects, including analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia, and physical dependence.
(Naloxone Hydrochloride, NCI Thesaurus)
Meperidine mimics the actions of endogenous neuropeptides via opioid receptors, thereby producing the characteristic morphine-like effects on the mu-opioid receptor, including analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia and physical dependence.
(Meperidine, NCI Thesaurus)
The characteristic morphine-like effects include analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia and physical dependence.
(Methadone, NCI Thesaurus)
Meperidine mimics the actions of endogenous neuropeptides via opioid receptors such as the mu-opioid receptor, thereby producing characteristic morphine-like effects including analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia and physical dependence.
(Meperidine hydrochloride, NCI Thesaurus)
When applied topically to the eye, this agent stimulates the sphincter pupillae to contract, resulting in miosis; stimulates the ciliary muscle to contract, resulting in spasm of accomodation; and may cause a transitory rise in intraocular pressure followed by a more persistent fall due to opening of the trabecular meshwork and an increase in the outflow of aqueous humor.
(Pilocarpine Hydrochloride, NCI Thesaurus)
In addition to analgesia and a depressive effect on the cough center in the medulla, this agent may cause euphoria, anxiolysis, miosis, sedation, physical dependence, constipation, and respiratory depression, depending on dosage and variations in individual metabolism.
(Oxycodone hydrochloride, NCI Thesaurus)
Naloxone reverses the effects of opioid analgesics by binding to the opioid receptors in the CNS, and inhibiting the typical actions of opioid analgesics, including analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia, and physical dependence.
(Naloxone, NCI Thesaurus)
Similar to morphine and other morphine-like agents, methadone mimics the actions of endogenous peptides at CNS opioid receptors, primarily the mu-receptor, resulting in characteristic morphine-like effects including analgesia, euphoria, sedation, respiratory depression, miosis, bradycardia and physical dependence.
(Methadone hydrochloride, NCI Thesaurus)
