Drugs Information Online
Drugs and diseases reference index

Drugs and diseases reference index
Search
EN


Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Ligament, patellar Ligament, patellar
    Ligament, patellar: See: Patellar tendon....
  2. Ligament, posterior cruciate Ligament, posterior cruciate
    Ligament, posterior cruciate: The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The posterio...
  3. Ligaments, knee Ligaments, knee
    Ligaments, knee: Ligaments are strong, elastic bands of tissue that connect bone to bone. They provide strength and stability to the joint. Four ligaments connect the femur (the bone in the thigh) with the tibia (the larger bone in the lower leg): The medial collateral ligament (MCL) provides stab...
  4. Ligand Ligand
    Ligand: A molecule that binds to another. Often, a soluble molecule such as a hormone or neurotransmitter that binds to a receptor. From the Latin ligandus, binding from the root ligare, to bind or tie. Ligate and ligature come from the same root....
  5. Ligate Ligate
    Ligate: To tie or to tie off, as in to ligate an artery. From the Latin "ligare" meaning "to bind or tie." Ligature and ligand come from the same root....
  6. Ligature Ligature
    Ligature: In surgery, a filament or thread used to tie something, such a blood vessel to prevent it from bleeding or the pedicle of a tumor to constrict it. Ligatures may be of silk, gut, wire, and other materials. From the Latin "ligare" meaning to "bind or tie." Ligate and ligand come from the sa...
  7. Lightening Lightening
    Lightening: Not to be confused with a discharge of atmospheric electricity, lightening refers to the sensation that a pregnant woman feels when the baby drops. This is the time when the presenting (lowermost) part of the fetus descends into the maternal pelvis. Lightening classically occurs 2 to ...
  8. Lightheadedness Lightheadedness
    Lightheadedness: A feeling you are "going to faint." Lightheadedness is medically distinct from dizziness, unsteadiness, and vertigo. See: Dizziness, Unsteadiness, and Vertigo....
  9. Lightning injuries Lightning injuries
    Lightning injuries: A major source of injury and death from the environment, lightning is one of the top 3 causes of death from environmental origins. (The other top environmental killers are floods and extreme temperatures.) Lightning is neither a direct current nor an alternating current. It is a ...
  10. Lights, flashing Lights, flashing
    Lights, flashing: A sensation of flashing lights is created when the vitreous (the clear, jelly-like substance that fills the middle of the eye) shrinks and tugs on the retina. These flashes of light can appear off and on for several weeks or months. With age, it is more common to experience fl...
  11. Lilliputian hallucination Lilliputian hallucination
    Lilliputian hallucination: An hallucination in which things, people, or animals seem smaller than they would be in real life. Lilliputian refers to the "little people" who lived (fictionally) on the island of Lilliput in Jonathan Swift's 1726 masterpiece Gulliver's Travels. The term "Lilliputian hal...
  12. Limb Limb
    Limb: The arm or leg. ...
  13. Limb-girdle muscular dystrophy Limb-girdle muscular dystrophy
    Limb-girdle muscular dystrophy: See: Muscular dystrophy, limb-girdle....
  14. Liminal Liminal
    Liminal: In neurolgy, at the threshold of perception to a sensory stimulus. In other words, just barely perceptible to the senses. "Liminal" comes from the Latin noun "limen" meaning "threshold." It makes sense, then, that "liminal" applies to the idea of a sensory threshold. "Subliminal" is below ...
  15. Lindane Lindane
    Lindane: An organochlorine pesticide and nerve poison. Also a suspected carcinogen (cancer-causing agent). Although many countries have banned lindane, it is still used in the US for treating head lice and scabies. Also known as gamma-hexachlorocyclohexane (HCH). The US Food and Drug Administration ...