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

septum ventriculorum cordis
(sep´tәm ven-trik″-u lor´әm kor´dis) interventricular septum.

septuplet
(sep-tup´lәt) one of seven offspring produced at one birth.

sequel
(se´kwәl) sequela.

sequela
(sә-kwel´ә) pl. seque´lae a diseased condition following or occurring as a result of another condition or event. postpolio sequelae , postpoliomyelitis sequelae postpoliomyelitis syndrome.

sequence
(se´kwәns) a connected series of events or things. in dysmorphology, a pattern of multiple anomalies derived from a single known or presumed prior anomaly or mechanical factor. Called also anomalad and complex. the order of arrangement of residues or constituents in a biological polymer, as t...

sequencing
(se´kwens-ing) the placement in order of information, concepts, or actions.

sequester
(se-kwes´tәr) to detach or separate abnormally a small portion from the whole. to isolate a portion of a chemical system by chelation or other means; see also sequestrant.

sequestered antigens
the cellular constituents of tissue (e.g., the lens of the eye and the thyroid) sequestered anatomically from the lymphoreticular system during embryonic development and thus thought not to be recognized as “self.” Should such tissue be exposed to the lymphoreticular system during adult life, an autoimmune res...

sequestered disk
a free fragment of the nucleus pulposus that is in the spinal canal outside of the anulus fibrosus and no longer attached to the intervertebral disk.

sequestrant
(se-kwes´trәnt) a sequestering agent, such as cholestyramine resin (which binds bile acids in the intestine and prevents their absorption).

sequestration
(se″kwәs-tra´shәn) abnormal separation of a part from a whole, as a portion of a bone by a pathologic process, or a portion of the circulating blood in a specific part occurring naturally or produced by application of a tourniquet. isolation of a patient. pulmonary se...

sequestrectomy
(se″kwәs-trek´tә-me) excision of a sequestrum.

sequestrum
(se-kwes´trәm) a piece of dead bone that has become separated from sound bone during the process of necrosis. Formation of a sequestrum: (A), sound bone; (B), new bone; (C), granulations lining involucrum; (D), cloaca; (E), sequestrum. any tissue that has become seque...

sequoiosis
(se″kwoi-o´sis) a form of hypersensitivity pneumonitis due to inhalation of and tissue reaction to dust from moldy redwood bark.

Ser-Ap-Es
(sәr-ap´әs) trademark for a preparation of hydralazine hydrochloride, reserpine, and hydrochlorothiazide, an antihypertensive agent.

sera
(se´rә) plural of serum.

Serax
(ser´aks) trademark for preparations of oxazepam, an antianxiety agent.

Sereny test
(for invasiveness of bacteria) the organism is inoculated into the eye of a guinea pig; invasiveness is determined by the organism's ability to produce conjunctivitis. The test is used particularly for determining the invasiveness of strains of Escherichia coli and Listeria monocytogenes.

serial extraction
the selective extraction of deciduous teeth during the stage of mixed dentition in accordance with the shedding and eruption of the teeth; it is done over an extended period to allow autonomous adjustment to relieve crowding of the dental arches during the eruption of the lateral incisors, canines, and premolars, and may ...

serial radiography
the making of several exposures of a particular area at arbitrary intervals.

serial section
histologic section of a specimen made in a consecutive order and so arranged for the purpose of microscopic examination.

series
(sēr´ēz) a group or succession of events, objects, or substances arranged in regular order or forming a kind of chain; in electricity, parts of a circuit connected successively end to end to form a single path for the current. adj., se´rial., adj.

serine
(sēr´ēn) a naturally occurring, nonessential amino acid, used as a dietary supplement, in biological studies and tests, and in culture media.

serine protease inhibitor
serine proteinase inhibitor serpin.

SERM
selective estrogen receptor modulator.

sermorelin
(sur″mo-rel´in) a synthetic peptide corresponding to a portion of growth hormone–releasing hormone; used as the acetate salt in treatment of growth hormone deficiency in prepubertal children, administered subcutaneously.

seroconversion
(sēr″o-kәn-vur´zhәn) the change of a patient's serologic test results from negative to positive, indicating development of antibodies in response to infection or immunization.

seroculture
(sēr´o-kul″chәr) a bacterial culture on blood serum.

serodiagnosis
(sēr″o-di″әg-no´sis) diagnosis using serologic tests. adj., serodiagnos´tic., adj.

seroenteritis
(sēr″o-en″tә-ri´tis) inflammation of the serous coat of the intestine.

serofibrinous
(sēr″o-fi´brin-әs) marked by both a serous exudate and precipitation of fibrin.

serofibrinous pericarditis
pericarditis characterized by a fibrinous exudate and substantial serous effusion, but closely resembling fibrinous pericarditis.

serofibrinous pleurisy
pleurisy with effusion with a watery exudate and fibrinous deposits.

serogroup
(sēr´o-grldbomacp) a group of bacteria containing a common antigen, sometimes including more than one serotype, species, or genus. This is an unofficial designation, used in the classification of certain genera of bacteria, such as Leptospira, Salmonella, Shigella, and Streptococcus. a group of viral ...

serologic test
(sēr″ah-loj´ik) any laboratory test involving serologic reactions, such as precipitin reaction, agglutination, or complement fixation, especially any such test measuring serum antibody titer. serologic test for syphilis(STS) any test for serum antibodies indic...

serologist
(sēr-ol´ә-jist) a specialist in serology.

serology
(sēr-ol´ә-je) originally, the study of the in vitro reactions of immune sera, such as precipitin, agglutination, and complement fixation reactions. Currently, the term is used to refer to the use of such reactions to measure serum antibody titers in infectious disease (serologic tests), to the clinical correl...

seroma
(sēr-o´mә) a collection of serum in the body, producing a tumorlike mass.

seromembranous
(sēr″o-mem´brә-nәs) pertaining to or composed of serous membrane.

seromucous
(sēr″o-mu´kәs) both serous and mucous.

seromucous gland
mixed g. (def. 2).

seromuscular
(sēr″o-mus´ku-lәr) pertaining to the serous and muscular coats of the intestine.

seronegative
(sēr″o-neg´ә-tiv) showing negative results on a serologic test; showing a low level of antibody.

seronegative rheumatoid arthritis
any of various rare types of rheumatoid arthritis in which patients are seronegative for rheumatoid factor.

seropositive
(sēr″o-poz´ĭ-tiv) showing positive results on a serologic test; showing a high level of antibody.

seroprognosis
(sēr″o-prog-no´sis) prognosis of disease based on serum reactions.

seropurulent
(sēr″o-pu´roo-lәnt) both serous and purulent.

seroreaction
(sēr″o-re-ak´shәn) a reaction demonstrating a specific antibody or antigen in serum.

seroresistant
(sēr″o-re-zis´tәnt) showing a seropositive reaction to a pathogen after treatment.

seroreversion
(sēr″o-re-ver´zhәn) spontaneous or induced seroconversion going from a seropositive to a seronegative state.

serosa
(sēr-o´sә) (sēr-o´zә) any serous membrane. adj., sero´sal., adj.

serosal fold
serous fold a fold of serous membrane.

serosanguineous
(sēr″o-sang-gwin´e-әs) composed of serum and blood.

seroserous
(sēr″o-sēr´әs) pertaining to two serous surfaces.

seroserous suture
a suture that brings together two serous surfaces.

serositis
(sēr″o-si´tis) inflammation of a serous membrane.

serosity
(sēr-os´ĭ-te) the quality of serous fluids.

serosurvey
(sēr″o-sur´va) a screening test of the serum of persons at risk to determine susceptibility to a particular disease.

serosynovitis
(sēr″o-sin″o-vi´tis) synovitis with effusion of serum.

serotherapy
(sēr″o-ther´ә-pe) the treatment of infectious disease by the injection of immune serum or antitoxin.

serotonergic
(ser″o-tōn-ur´jik) containing or activated by serotonin.

serotonin
(ser″o-to´nin) a hormone and neurotransmitter, 5-hydroxytryptamine (5-HT), found in many tissues, including blood platelets, intestinal mucosa, pineal body, and central nervous system; it has many physiologic properties, including inhibition of gastric secretion, stimulation of smooth muscles, and production...

serotonin syndrome
a complex of symptoms caused by hyperserotonemia, usually owing to a person's taking selective serotonin reuptake inhibitors along with some other drug that increases serotonin levels. Symptoms are variable but may include mental status changes, hyperactivity of the autonomic nervous system, and irregular muscular movements; severe c...

serotoninergic
(ser″o-to″nin-ur´jik) pertaining to neurons that release serotonin as a neurotransmitter, such as those of the raphe nuclei of the brainstem, or neurons that secrete serotonin as a hormone.

serotype
(sēr´o-tīp″) the type of a microorganism determined by its constituent antigens, or a taxonomic subdivision based thereon. serovar.

serous
(sēr´әs) pertaining to serum; thin and watery, like serum. producing or containing serum.

serous atrophy
atrophy with the effusion of a serous fluid into the wasted tissues; wasting of fat.

serous borderline tumor
the most common type of borderline ovarian tumor, having a serous histology and thought to originate from germinal epithelium.

serous cavity
a coelomic cavity, such as that enclosed by the pericardium, peritoneum, or pleura, not communicating with the outside of the body and lined with a serous membrane that secretes serous fluid.

serous cell
a cell concerned in the secretion of a watery fluid rich in protein, like the secretory cells of the parotid gland; called also albuminous cell.

serous gland
a gland that secretes a watery albuminous material, commonly but not always containing enzymes.

serous membrane
the membrane lining the walls of the body cavities and enclosing the contained organs; it consists of mesothelium lying upon a connective tissue layer and it secretes a watery fluid.

serous otitis media
chronic otitis media marked by serous effusion into the middle ear. Called also secretory or catarrhal o. media.

serous pericardium
the inner, serous portion of pericardium, consisting of two layers, visceral and parietal; the space between the layers is the pericardial cavity.

serous synovitis
synovitis with copious nonpurulent effusion.

serovaccination
(sēr″o-vak″sĭ-na´shәn) injection of serum combined with bacterial vaccination to produce passive and active immunity.

serovar
(sēr´o-var) a taxonomic subdivision of bacteria based on the kinds and combinations of constituent antigens present in the cell. Called also serotype.

serpiginous
(sәr-pij´ĭ-nәs) creeping from part to part; having a wavy border.

serpiginous corneal ulcer
hypopyon ulcer.

serrated
(ser´āt-ed) having a sawlike edge or border.

Serratia
(sә-ra´she-ә) a genus of gram-negative, facultatively anaerobic, motile bacteria, many species of which are opportunistic pathogens, causing infections of the endocardium, blood, wounds, and urinary and respiratory tracts. S. marces´cens is the most frequently isolated species.

Serratia
pneumonia a rare type of bacterial pneumonia, usually nosocomial, caused by infection with Serratia marcescens; it is often fatal to immunocompromised patients.

serration
(sә-ra´shәn) the state of being serrated. a serrated structure or formation.

serratus anterior muscle
origin, eight or nine upper ribs; insertion, medial border of scapula; innervation, long thoracic nerve; action, draws scapula forward; rotates scapula to raise shoulder in abduction of arm.

serratus posterior inferior muscle
origin, spines of two lower thoracic and two or three upper lumbar vertebrae; insertion, inferior border of four lower ribs; innervation, ninth to twelfth thoracic nerves; action, lowers ribs in expiration.

serratus posterior superior muscle
origin, nuchal ligament, spinous processes of upper thoracic vertebrae; insertion, second, third, fourth, and fifth ribs; innervation, first four thoracic nerves; action, raises ribs in inspiration.

Sertoli cell tumor
androblastoma (def. 1).

Sertoli cells
elongated cells in the seminiferous tubules to which the spermatids become attached; they provide support, protection, and, apparently, nutrition until the spermatids are transformed into mature spermatozoa.

Sertoli-cell–only syndrome
(ser-to´le) congenital absence of the germinal epithelium of the testes, the seminiferous tubules containing only Sertoli cells, marked by testes slightly smaller than normal, azoospermia, and elevated titers of follicle-stimulating hormone or of general gonadotropins.

Sertoli-Leydig cell tumor
androblastoma (def. 1).

sertraline
(sur´trә-lēn) a selective serotonin reuptake inhibitor administered orally as the hydrochloride salt as an antidepressant and to treat obsessive-compulsive disorder and panic disorder.

serum
(sēr´әm) pl. serums, se´ra the clear portion of any animal or plant fluid that remains after the solid elements have been separated out. The term usually refers to blood serum, the clear, straw-colored, liquid portion of the plasma that does not contain fibrinogen or blood cells, and remains fluid after ...

serum albumin
albumin of the blood.

serum amyloid A protein
a high-molecular-weight protein synthesized in the liver; it is an acute phase reactant and circulates in association with a subclass of HDL lipoproteins. It is the precursor to AA amyloid and accumulates in inflammation. Called also SAA protein.

serum bactericidal activity test
a type of antimicrobial susceptibility test for determining, by serial dilution, the titer of serum (and antimicrobial in serum) that has effective bactericidal activity.

serum disease
serum sickness.

serum gastrin test
any test that measures blood levels of gastrin; see fasting serum gastrin.

serum globulins
all plasma proteins except albumin, which is not a globulin, and fibrinogen, which is not in the serum. The serum globulins are subdivided into alpha-, beta-, and gamma-globulins on the basis of their relative electrophoretic mobilities.

serum glutamic-pyruvic transaminase
(SGPT) see alanine transaminase.

serum hepatitis
former name for hepatitis B.