Category: S

  • Subumbilical space

    The triangular space within the body cavity below the navel.  

  • Southern tick-associated rash illness

    An expanding red rash, similar in appearance to erythema migrans, the rash found in Lyme disease. It results from the bite of the tick Amblyomma americanum, found in the southeastern U.S. Ticks of this species may harbor the spirochete Borrelia lonestari, which produces the rash.  

  • Southern blot test

    An analytical method traditionally used in DNA analysis. After a sample of DNA fragments is separated by agarose gel electrophoresis, the fragments are transferred to a solid cellulose support by blotting. The gel is placed between a concentrated salt solution and absorbent paper. Capillary action draws the fragments onto the solid support. The support is…

  • Souque’s phenomenon

    Finger extension on the involved side of a hemiplegic patient when the extremity is raised to a position 90° above shoulder flexion or abduction.  

  • Sound conducting apparatus

    Those parts of the acoustic apparatus that transmit sound.  

  • Succussion sound

    A splashing sound heard over a cavity with fluid in it.  

  • Splenic souffle

    The sound heard over the spleen in various diseases. A sound audible above the spleen in instances of malaria and leukemia.  

  • Sorbefacient

    Causing or that which causes or promotes absorption. Facilitating absorption; a medication or substance that promotes the process of absorption.  

  • Sonometer

    A noninvasive device that uses ultrasonic energy to measure bone mineral density.  

  • Sonolucent

    Capable of transmitting sound waves, rather than reflecting them to an ultrasound transducer. Said of anatomical structures that are fluid-filled rather than solid, such as the gallbladder or urinary bladder. In ultrasonography, these structures appear dark.