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Drugs and diseases reference index

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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

  1. Single palmar flexion line Single palmar flexion line
    Four-finger line: See: Simian crease....
  2. Single transverse palmar crease Single transverse palmar crease
    Single transverse palmar crease: Preferable term for what historically was called a simian crease. See: Simian crease....
  3. Single transverse palmar line Single transverse palmar line
    Single upper palm crease: See: Simian crease....
  4. Single upper palm crease Single upper palm crease
    Single upper palm crease: See: Simian crease....
  5. Single upper palm line Single upper palm line
    Single upper palm line: See: Simian crease....
  6. Single-blind Single-blind
    Single-blind: Term used to described a study in which either the investigator or the participant, but not both of them, is unaware of the nature of the treatment the participant is receiving. Also called single-masked....
  7. Single-masked Single-masked
    Single-masked: See: Single-blind....
  8. Single-payer health care Single-payer health care
    Single-payer health care: A system of health care characterized by universal and comprehensive coverage. Single-payer health care is similar to the health services provided by Medicare in the US. The government pays for care that is delivered in the private (mostly not-for-profit) sector. Doctors ar...
  9. Singultus Singultus
    Singultus: A rarely used medical word for an ordinary hiccup. A hiccough is an extraordinary type of breathing movement involving a sudden intake of air (inspiration) due to an involuntary contraction of the diaphragm accompanied by closure of the vocal apparatus (glottis) of the larynx. A hiccough...
  10. Sinoatrial node Sinoatrial node
    Sinoatrial node: The sinoatrial node (the SA node) is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to...
  11. Sinuous Sinuous
    Sinuous: Curving in and out; in a serpentine, wavy form; winding. From the Latin noun "sinus," which means "curve, fold, or hollow' and also was borrowed directly to designate the "and out; in a serpentine, wavy form; winding. From the Latin noun " sinus"....
  12. Sinus Sinus
    Sinus: 1. An air-filled cavity in a dense portion of a skull bone. The sinuses decrease the weight of the skull. The sinuses are formed in four right-left pairs. The frontal sinuses are positioned behind the forehead, while the maxillary sinuses are behind the cheeks. The sphenoid and ethmoid sinuse...
  13. Sinus arrhythmia Sinus arrhythmia
    Sinus arrhythmia: The normal increase in heart rate that occurs during inspiration (when you breathe in). This is a natural response and is more accentuated in children than adults. The "sinus" refers to the natural pacemaker of the heart which is called the sinoatrial (or sinus) node. It is located...
  14. Sinus barotrauma Sinus barotrauma
    Sinus barotrauma: Sinus troubles, particularly with pain and a feeling of pressure, due to changing atmospheric pressures, as when going up or down in a plane. Also called aerosinusitis or barosinusitis....
  15. Sinus bradycardia Sinus bradycardia
    Sinus bradycardia: A regular but unusually slow heart beat (60 beats/minute or less at rest). Sinus bradycardia can be the result of many things including good physical fitness, medications, and some forms of heart block. "Sinus" refers to the sinus node, the heart's natural pacemaker which creates ...