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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

  1. Symptoms, withdrawal Symptoms, withdrawal
    Symptoms, withdrawal: Abnormal physical or psychological features that follow the abrupt discontinuation of a drug that has the capability of producing physical dependence. Common withdrawal symptoms include sweating, tremor, vomiting, anxiety, insomnia, and muscle pain....
  2. Synaesthesia Synaesthesia
    Synaesthesia: See: Synesthesia....
  3. Synapse Synapse
    Synapse: The point of connection usually between two nerve cells. Specifically, a synapse is a specialized junction at which a nerve cell (a neuron) communicates with a target cell. The neuron releases a chemical transmitter (a neurotransmitter) that diffuses across a small gap and activates specifi...
  4. Synapsis Synapsis
    Synapsis: The side-by-side and point-by-point pairing of homologous chromosomes during meiosis....
  5. Synaptic cleft Synaptic cleft
    Synaptic cleft: The tiny space between two nerve cells across which the neurotransmitter acetylcholine diffuses....
  6. Synaptonemal complex Synaptonemal complex
    Synaptonemal complex: A protein structure that forms between two homologous chromosomes during meiosis and that is thought to mediate chromosome pairing, synapsis, and recombination. The synaptonemal complex is a tripartite structure consisting of two parallel lateral regions and a central element. ...
  7. Syncephaly Syncephaly
    Syncephaly: Conjoined twins whose heads are joined together. From syn-, together + -cephaly, head = heads together. Also called craniopagus or janiceps....
  8. Synchronic study Synchronic study
    Synchronic study: A study done at a single point in time rather than over the course of a period of time (longitudinally)....
  9. Syncope Syncope
    Syncope: Partial or complete loss of consciousness with interruption of awareness of oneself and ones surroundings. When the loss of consciousness is temporary and there is spontaneous recovery, it is referred to as syncope or, in nonmedical quarters, fainting. Syncope accounts for one in every...
  10. Syncope, coughing Syncope, coughing
    Syncope, coughing: The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecating, c...
  11. Syncope, defecation Syncope, defecation
    Syncope, defecation: The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturi...
  12. Syncope, heat Syncope, heat
    Syncope, heat: Sudden dizziness or fainting experienced after exercising in the heat. The skin appears pale and sweaty but is generally moist and cool. The pulse may be weakened, and the heart rate is usually rapid. Body temperature is normal....
  13. Syncope, micturition Syncope, micturition
    Syncope, micturition: The temporary loss of consciousness upon urinating. (Syncope is the temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecat...
  14. Syncope, situational Syncope, situational
    Syncope, situational: The temporary loss of consciousness in a particular kind of situation. The situations that trigger this reaction are diverse, and include having blood drawn, straining while urinating or defecating, and coughing. It can also be due to the emotional stress, fear, or pain. W...
  15. Syncope, swallowing Syncope, swallowing
    Syncope, swallowing: The temporary loss of consciousness upon swallowing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecatin...