Copy of `Dorland's Medical Dictionary`

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Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

ileoanal reservoir
a pouch for the collection of feces, formed by suturing together multiple parts of the ileum and connecting this to the anus by a short conduit of ileum; it is done along with a colectomy and ileoanal anastomosis to provide for continent elimination of feces in a patient with ulcerative colitis.

ileocecal
(il″e-o-se´kәl) pertaining to the ileum and cecum.

ileocecal junction
the junction of the ileum and cecum, located at the lower right side of the abdomen and fixed to the posterior abdominal wall.

ileocecal valve
a valvelike structure formed by the flaps or lips, one above and one below, of the ileal (ileocecal) orifice. In the cadaver the flaps project into the lumen of the large intestine as thickened folds, but in the living individual there is only a conical or papillary projection called the ileal (or ileocecal) papilla.

ileocecocystoplasty
(il″e-o-se″ko-sis´to-plas″te) augmentation cystoplasty using an isolated segment of the ileum and cecum for the graft.

ileocecostomy
(il″e-o-se-kos´tә-me) surgical creation of a new opening between the ileum and the cecum. the opening so created.

ileocolic
(il″e-o-kol´ik) pertaining to the ileum and colon.

ileocolic artery
origin, superior mesenteric artery; branches, anterior and posterior cecal and appendicular arteries and colic (ascending) and ileal branches; distribution, ileum, cecum, vermiform appendix, ascending colon.

ileocolic vein
a vein that follows the distribution of the ileocolic artery and empties into the superior mesenteric vein.

ileocolitis
(il″e-o-ko-li´tis) inflammation of the ileum and colon.

ileocolostomy
(il″e-o-kә-los´tә-me) surgical anastomosis of the ileum to the colon.

ileocolotomy
(il″e-o-ko-lot´ә-me) incision of the ileum and colon.

ileocystoplasty
(il″e-o-sis´to-plas″te) augmentation cystoplasty using an isolated segment of the ileum for the graft.

ileocystostomy
(il″e-o-sis-tos´tә-me) use of an isolated segment of ileum to create a passage from the urinary bladder to an opening in the abdominal wall.

ileogastric reflex
inhibition of gastric motility by distention of the ileum.

ileoileostomy
(il″e-o-il″e-os´tә-me) surgical creation of an opening between two different parts of the ileum. the opening so created.

ileorectal
(il″e-o-rek´tәl) pertaining to or communicating with the ileum and rectum.

ileorectal anastomosis
surgical anastomosis of the ileum and rectum after total colectomy, as is sometimes done as a treatment for ulcerative colitis.

ileorrhaphy
(il″e-or´ә-fe) suture of the ileum.

ileosigmoidostomy
(il″e-o-sig″moi-dos´tә-me) surgical creation of an opening between the ileum and the sigmoid colon. the opening so created.

ileostomy
(il″e-os´tә-me) an artificial opening (stoma) created in the ileum and brought to the surface of the abdomen for the purpose of evacuating feces. This may be done in the treatment of ulcerative colitis, Crohn disease, congenital intestinal defects, cancer, trauma, and other conditions requiring an intestinal bypas...

ileostomy bag
any of various plastic or latex pouches attached to the stoma either for collection of fecal material as a continent ileal reservoir or for collection of urine as a neobladder.

ileotomy
(il″e-ot´ә-me) incision of the ileum.

Iletin
(il´ә-tin) trademark for preparations of insulin for injection.

ileum
(il´e-әm) the distal portion of the small intestine, extending from the jejunum to the cecum (beginning of the large intestine). duplex ileum congenital duplication of the ileum.

ileus
(il´e-әs) failure of appropriate forward movement of the contents of the intestine due to nonmechanical causes, such as disturbances in neural stimulation (adynamic ileus). The principal symptoms are abdominal pain and distention, constipation, and vomiting in which the vomitus may contain fecal material. Ileus is...

Ilheus virus
an arbovirus of the genus Flavivirus, first isolated from species of Aedes and Psorophora in Brazil; also found in Panama, where birds may be hosts. It is related to St. Louis encephalitis virus, Japanese encephalitis virus, and West Nile virus.

iliac
(il´e-ak) pertaining to the ilium.

iliac bone
ilium.

iliac crest
the thickened, expanded upper border of the ilium.

iliac fossa
a concave area occupying much of the inner surface of the ala of the ilium, especially anteriorly; from it arises the iliac muscle.

iliac region
either of the two abdominal regions that are inferior and lateral in position, one on the left (left iliac region) and one on the right (right iliac region). They overlie the superior part of the thighs and are lateral to the hypogastric region. Called also groin, inguen, and inguinal region.

iliacus muscle
iliac muscle: origin, iliac fossa and base of sacrum; insertion, greater psoas tendon and lesser trochanter of femur; innervation, femoral nerve; action, flexes thigh, trunk on limb.

iliadelphus
(il″e-ә-del´fәs) symmetrical conjoined twins united in the iliac region; iliopagus.

iliococcygeus muscle
iliococcygeal muscle: the posterior portion of the levator ani muscle, which originates as far anteriorly as the obturator canal and inserts on the side of the coccyx and the anococcygeal ligament; innervation, third and fourth sacral nerves; action, helps to support pelvic viscera and resist increases in intra-abdominal pressu...

iliocostal space
the area between the twelfth rib and the crest of the ilium.

iliocostalis cervicis muscle
origin, angles of third, fourth, fifth, and sixth ribs; insertion, transverse processes of fourth, fifth, and sixth cervical vertebrae; innervation, branches of cervical nerves; action, extends cervical spine.

iliocostalis lumborum muscle
origin, iliac crest; insertion, angles of lower six or seven ribs; innervation, branches of thoracic and lumbar nerves; action, extends lumbar spine. The term is sometimes used to mean the combination of both the lumbar and thoracic (iliocostalis thoracis muscle) parts, not just the lumbar.

iliocostalis muscle
iliocostal muscle: the lateral division of the erector spinae muscle, which includes the iliocostalis cervicis, iliocostalis thoracis, and iliocostalis lumborum muscles.

iliocostalis thoracis muscle
origin, upper borders of angles of six lower ribs; insertion, angles of six upper ribs and transverse process of seventh cervical vertebra; innervation, branches of thoracic nerves; action, keeps thoracic spine erect. See also iliocostalis lumborum muscle.

iliofemoral
(il″e-o-fem´or-әl) pertaining to the ilium and femur.

iliofemoral ligament
a very strong triangular or inverted Y-shaped band covering the anterior and superior portions of the hip joint.

iliofemoral triangle
a triangle formed by the Nélaton line, a second line through the superior iliac spine, and a third from this to the greater trochanter.

iliohypogastric nerve
origin, lumbar plexus—L1 (sometimes T12); branches, lateral and anterior cutaneous branches; distribution, the skin above the pubis and over the lateral side of the buttock, and occasionally the pyramidalis muscle; modality, motor and general sensory.

ilioinguinal
(il″e-o-in´gwĭ-nәl) pertaining to the iliac and inguinal regions.

ilioinguinal nerve
origin, lumbar plexus—L1 (sometimes T12); accompanies the spermatic cord through the inguinal canal; branches, anterior scrotal or labial branches; distribution, skin of scrotum or labia majora, and adjacent part of thigh; modality, general sensory.

iliolumbar
(il″e-o-lum´bәr) pertaining to the iliac and lumbar regions.

iliolumbar artery
origin,internal iliac artery; branches, iliac, spinal, and lumbar branches; distribution, pelvic muscles and bones, fifth lumbar segment, sacrum.

iliolumbar vein
a vein that follows the distribution of the iliolumbar artery and opens into the internal iliac or the common iliac vein, or it may divide to end in both.

iliopagus
(il″e-op´ә-gәs) symmetrical conjoined twins united in the iliac region.

iliopectineal
(il″e-o-pek-tin´e-al) pertaining to the ilium and pubes.

iliopectineal line
the ridge on the ilium and pubes showing the brim of the true pelvis.

iliopsoas muscle
a compound muscle consisting of the iliacus and the psoas major muscles.

iliotibial tract
a thickened longitudinal band of fascia lata extending from the tensor muscle downward to the lateral condyle of the tibia.

iliotrochanteric
(il″e-o-tro-kan-ter´ik) pertaining to the ilium and femoral trochanter.

iliotrochanteric ligament
a portion of the articular capsule of the hip joint.

ilium
(il´e-әm) pl. i´lia the lateral, flaring portion of the hip bone. adj., il´iac., adj.

illness
(il´nis) disease. folk illness a condition in which a person has symptoms that are not identifiable with usual modern categories of disease; the causes may be said to be natural forces, supernatural factors, interpersonal factors, or emotions. An example is susto, a Latin America...

illumination
(ĭ-loo″mĭ-na´shәn) the lighting up of a part, cavity, organ, or object for inspection. the luminous flux per unit area of a given surface; SI unit, lux. Symbol E. darkfield illumination , dark-ground illumination the casting of peripher...

illuminator
(ĭ-loo″mĭ-na´tәr) the source of light for viewing an object.

illusion
(ĭ-loo´zhәn) a mental impression derived from misinterpretation of an actual sensory stimulus. adj., illu´sional., adj.

iloprost
(i´lo-prost) a synthetic analogue of prostacyclin that is a systemic and pulmonary arterial dilator, used in the treatment of primary pulmonary hypertension; administered by inhalation.

Ilosone
(il´o-sōn) trademark for a preparation of erythromycin estolate, a broad-spectrum antibiotic.

IM
intramuscular.

image
(im´әj) a picture or concept with more or less likeness to an objective reality.

image distributor
beam splitter.

imaging
(im´ә-jing) the production of diagnostic images, as in radiography, ultrasonography, or scintigraphy.

imago
(ĭ-ma´go) pl. imagoes, ima´gines the adult form of an insect. in psychoanalysis, an idealized, unconscious mental image of a key person in one's early life.

imatinib
(ĭ-mă´tĭ-nib″) a drug that inhibits the activity of an abnormal enzyme that is created by the Philadelphia chromosome abnormality; it is used to treat chronic myeloid leukemia.

imbalance
(im-bal´әns) dysequilibrium (def. 2). lack of balance, such as between ocular muscles or between different electrolytes in the body.

imbibition
(im″bĭ-bish´әn) absorption of a liquid.

imbricated
(im´brĭ-kāt″әd) overlapping like shingles.

Imerslund syndrome
(e´mәr-slund) Imerslund-Graesbeck syndrome (e´mәr-slund grās´bek) a rare familial form of megaloblastic anemia, usually transmitted as an autosomal recessive trait, characterized by selective intestinal malabsorption of vitamin B12 uninfluenced by intrinsic factor, and associated with proteinu...

imidazole
(im″id-az´ōl) an organic compound in which two of the five atoms that make up the ring are nitrogen atoms. It is an antimetabolite and inhibitor of histamine and is used as an insecticide. any of a class of antifungal agents that contain this compound.

imide
(im´īd) any compound containing the bivalent group dbondNH.

imiglucerase
(im″ĭ-gloo´sәr-ās) an analogue of the enzyme lacking in Gaucher disease, used for treating the adult form of the disease; administered by intravenous infusion.

imine
(ĭ-mēn´) an organic compound containing an imino group.

imino acid
(im´ĭ-no) an amino acid whose amino group is part of a closed ring; the most common ones are proline and hydroxyproline.

iminodiacetic acid
(im″ĭ-no-di″ә-se´tik) a simple dicarboxylic acid containing an imino group; radiolabeled (99mTc) analogues of iminodiacetic acid are used in hepatobiliary imaging.

iminoglycinuria
(im″ĭ-no-gli″sin-u´re-ә) a benign hereditary disorder of renal tubular reabsorption of glycine, proline, and hydroxyproline, marked by excessive levels of all three substances in the urine.

imipenem
(im″ĭ-pen´әm) a β-lactam antibiotic with a broad spectrum of activity against gram-positive and gram-negative organisms. Because it is metabolized in the kidneys, it is administered with the enzyme inhibitor cilastatin in order to decrease the amount of it that is degraded by an enzyme in the kidne...

imipramine
(ĭ-mip´rә-mēn) a tricyclic antidepressant of the dibenzazepine group, used also in the treatment of childhood enuresis, panic disorder, chronic pain, attention-deficit/hyperactivity disorder, cataplexy associated with narcolepsy, urinary incontinence, and bulimia nervosa. Administered orally or intramuscularly...

imiquimod
(im″ĭ-kwim´od) a biologic response modifier used topically in the treatment of venereal warts of the external genitalia and perianal region.

immature
(im″ә-chldbomacr´) unripe or not fully developed.

immature cataract
incipient cataract an incomplete cataract; the lens is only slightly opaque and the cortex clear.

immediate transfusion
transfer of blood directly from a vessel of the donor to a vessel of the recipient.

immersion foot
damage to the skin of the feet of persons who have stood for long periods in water; see trench foot and warm water immersion foot.

immiscible
(ĭ-mis´ĭ-bәl) not susceptible to being mixed.

immobility
(ĭ″mo-bil´ĭ-te) lack of movement; the state of not being movable; see also hazards of immobility.

immobilization
(ĭ-mo″bĭ-lĭ-za´shәn) the rendering of a part incapable of being moved.

immobilization test
detection of antibody based on its ability to inhibit the motility of a bacterial cell or protozoon.

immobilize
(ĭ-mo´bĭ-līz) to render incapable of being moved, as by a cast.

immobilizer
(ĭ-mo´bĭ-li″zәr) something that immobilizes. sternal-occipital-mandibular immobilizer(SOMI) any of a variety of cervical orthoses that have two or three posts running between head plates and a jacket or corset.

immotile cilia syndrome
primary ciliary dyskinesia.

immovable joint
fibrous joint.

immune
(ĭ-mūn´) being highly resistant to a disease because of the formation of humoral antibodies or the development of immunologically competent cells, or both, or as a result of some other mechanism, as interferon activities in viral infections. characterized by the development of humoral antibodies ...

immune agglutinin
a specific agglutinin found in the blood after recovery from the disease or injection of the microorganism.

immune antibody
a type of isoantibody induced by immunization, either by pregnancy or by transfusion, in contrast to natural antibodies.

immune body
antibody.

immune complex
antigen-antibody complex.