Home | Links | Contact Us | About Us | Bookmark
Medical Forum Search :
 
   Homepage      News      Health Topics     Health Directories      Medical Forum      Dictionary  
Alphabetical list of technical and popular medical terms
Type the word that you would like to find.
Blue Arrow Go
Medical Dictionary     A
Page 5 / 211 First 1 2 3 4 5 6 7 8 9 10  >  Last

  • abdominoplasty
    An operation performed on the abdominal wall for cosmetic purposes.
  • abdominoscrotal
    Relating to the abdomen and the scrotum.
  • abdominothoracic
    Relating to both the abdomen and the thorax.
  • abdominothoracic arch
    a bell-shaped line defined by the lower end of the sternum and the costal arches on each side, constituting a boundary line between the anterolateral portions of the thoracic and abdominal walls.
  • abdominovaginal
    Relating to both the abdomen and the vagina.
  • abdominovaginal hysterectomy
    a combined vaginal and abdominal surgical dissection that allows partial or complete removal of vagina, vulva, rectum, and perineum (abdominoperineal approach) as well as pelvic organs; usually done in cases of advanced pelvic cancer.
  • abdominovesical
    Relating to the abdomen and urinary bladder, or to the abdomen and gallbladder.

    Alternate names: abdominocystic

  • abducens nucleus
    a group of motor neurons in the lower part of the pons, innervating the ipsilateral lateral rectus muscle of the eye; unique among motor cranial nerve nuclei in that it consists of two distinct populations of neurons: neurons that give rise to fibers forming the abducens nerve root and those internuclear neurons the processes of which cross the midline, ascend in the opposite medial longitudinal fasciculus, and terminate on specific oculomotor neurons; considered a primary center for mechanisms controlling conjugate horizontal gaze.

    Alternate names: nucleus nervi abducentisTA

  • abducent
    Abducting; drawing away, especially away from the median plane.

    Alternate names: abducent nerve [CN VI]

    Alternate names: abducens

  • Abducent nerve

    Abducent nerve: A small motor nerve that has one task: to supply a muscle called the lateral rectus muscle that moves the eye outward. Paralysis of the abducent nerve causes inward turning of the eye (internal strabismus) leading to double vision. The abducent nerve is the sixth cranial nerve. All 12 cranial nerves, the abducent nerve included, emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the vertebral column. The word "abducent" comes from the Latin "ab-", away from + "ducere", to draw = to draw away. The abducent (or abducens) operates the lateral rectus muscle that draws the eye toward the side of the head. The abducent nerve is also called the abducens nerve.

  • abducent nerve [CN VI]
    a small motor nerve supplying the lateral rectus muscle of the eye; its origin is in the facial colliculus of the tegmentum of the pons just below the surface of the rhomboid fossa. It emerges from the brain in the fissure between the medulla oblongata and the posterior border of the pons (medullopontine sulcus); it enters the dura of the clivus and passes through the cavernous sinus, entering the orbit through the superior orbital fissure.

    Alternate names: nervus abducens [CN VI]TA, abducens nerve, abducent2, sixth cranial nerve [CN VI]

  • abduct
    To move away from the median plane.

    Alternate names: abduce

  • Abduction

    Abduction: No less an authority than Merriam Webster's Collegiate Dictionary defines "abduction" as (1) the action of abducting: the condition of being abducted (and) (2) the unlawful carrying away of a woman for marriage or intercourse. In medicine, the word "abduction" has an entirely different meaning. It refers to the movement of a limb sideways away from the midline of the body. Abduction of the legs serves to spread the legs. The opposite of abduction in this sense is adduction. Adduction of the legs brings the legs together. The word �abduction� comes from the Latin prefix �ab-� meaning �away from� + �ducere� meaning �to draw or lead� = �to draw away from.�

  • abductor (muscle)
    muscle that causes movement away from the median plane of body, axis of middle finger, or axis of second toe, or in the case of the thumb, anterior to the plane of the palm.

    Alternate names: musculus abductorTA, abductor

  • abductor digiti minimi (muscle) of foot
    muscle of first layer of plantar muscles; origin, lateral and medial processes of calcaneal tuberosity; insertion, lateral side of proximal phalanx of fifth toe; action, abducts and flexes little toe; nerve supply, lateral plantar nerve.

    Alternate names: musculus abductor digiti minimi pedisTA, abductor muscle of little toe, musculus abductor digiti quinti2

  • abductor digiti minimi (muscle) of hand
    superficial hypothenar muscle of palm; origin, pisiform bone and pisohamate ligament; insertion, medial side of base of proximal phalanx of the little finger; action, abducts and flexes little finger; nerve supply, deep branch of ulnar.

    Alternate names: musculus abductor digiti minimi manusTA, abductor muscle of little finger, musculus abductor digiti quinti1

  • abductor hallucis (muscle)
    muscle of third layer of plantar muscles; origin, medial process of calcaneal tuberosity, flexor retinaculum, and plantar aponeurosis; insertion, medial side of proximal phalanx of great toe; action, abducts great toe; nerve supply, medial plantar.

    Alternate names: musculus abductor hallucisTA, abductor muscle of great toe

  • Abductor muscle

    Abductor muscle: Any muscle used to pull a body part away from the midline of the body. For example, the abductor leg muscles serve to spread the legs away from the midline and away from one another. The word �abductor� comes from the Latin prefix �ab-� meaning �away from� + �ducere� meaning �to draw or lead� = �to draw away from.� The prefix "ab-" is opposed to the prefix "ad-". Therefore, the opposite of �abductor� is �adductor.� An abductor muscle opposes an adductor muscle.

  • abductor pollicis brevis (muscle)
    superficial thenar muscle origin, tubercle of trapezium and flexor retinaculum; insertion, lateral side of proximal phalanx of thumb; action, abducts thumb; nerve supply, median.

    Alternate names: musculus abductor pollicis brevisTA, short abductor muscle of thumb

  • abductor pollicis longus (muscle)
    outcropping muscle of posterior compartment of forearm; origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial.

    Alternate names: musculus abductor pollicis longusTA, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis

  • abductor spasmodic dysphonia
    a breathy form of spasmodic dysphonia caused by long and excessive vocal fold opening for voiceless phonemes extending into vowels.
  • Abegg rule
    the tendency of the sum of the maximum positive and negative valences of a particular element to equal 8; C may have a valence of +4 and −4, O of +6 and −2. Sometimes loosely stated as all atoms have the same number of valences, a consequence of the tendency of valence electron shells to be filled to 8.
  • Abell-Kendall method
    a standard reference method for estimation of total serum cholesterol involving saponification of cholesterol ester by hydroxide, extraction with petroleum ether, and color development with acetic anhydride-sulfuric acid; the method avoids interference by bilirubin, protein, and hemoglobin.
  • Abelson murine leukemia virus
    a retrovirus belonging to the Type C retrovirus group subfamily (family Retroviridae) that is associated with leukemia and induces in vitro transformation of certain mouse cells.
  • abembryonic
    The area of the blastocyst opposite the region where the embryoblast (early embryo) is located.
  • abembryonic pole
    the pole of the blastocyst opposite the embryonic pole where the embryoblast (primordial embryo) is located.
  • abenteric
    A nearly obsolete term meaning away from the intestine, said of a morbid process occurring elsewhere that would normally occur in the intestine.
  • aberrant
    Differing from the usual or norm; in botany or zoology, used for certain atypical individuals in a species; abnormal. Wandering off; used to describe certain ducts, vessels, or nerves that deviate from the usual or normal course or pattern.

    Alternate names: deviant1

  • aberrant artery
    artery having an unusual origin or course.
  • aberrant bile ducts
    small ducts occasionally present in the ligaments of the liver or originating from the surface of the liver.
Page 5 / 211 First 1 2 3 4 5 6 7 8 9 10  >  Last

Archive: Forum -Forum1 - Links - 1 - 2
HealthExpertAdvice does not provide medical advice, diagnosis or treatment. 0.014
Copyright (c) 2013 HealthExpertAdvice Tuesday, April 1, 2014
Terms of use - Privacy Policy