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Extrinsic asthma
Extrinsic asthma Asthma that is triggered by an allergic reaction, usually to something that is inhaled.
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Asthma
Asthma is a chronic, inflammatory lung disease characterized by recurrent breathing problems. People with asthma have acute episodes or when the air passages in their lungs get narrower, and breathing becomes more difficult. Sometimes episodes of asthma are triggered by allergens, although infection, exercise, cold air and other factors are also important triggers.
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Extra-strength aim
Extra-strength aim is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): sodium monofluorophosphate.
Extracellular
Outside the cells.
Extracerebral
Located outside the cerebral hemispheres.
Extracolonic
Outside the colon. An hereditary colon cancer syndrome may also predispose to extracolonic malignancies.
Extracorporeal
Outside the body, in the anatomic sense. As in extracorporeal circulation, extracorporeal dialysis, and extracorporeal shock wave lithotripsy.
Extracorporeal membrane oxygenation
(ECMO) A life support system that circulates the blood through an oxygenating system. ECMO is like a heart-lung machine that takes over the work of the heart and lungs during open heart surgery. ECMO may be used, for example, to treat ARDS (acute respiratory distress syndrome), lethal smoke inhalation injury, or irreversible heart failure. As a general rule, ECMO is only used for limited time because of the high risks of bleeding, clotting, infection and organ failure.
Extracorporeal shock wave lithotripsy
A technique for shattering stones such as kidney stones or gallstones with a shock wave produced outside the body.
Extracorporeal shock wave lithotripsy (ESWL)
A method of breaking up bile stones and gallstones. Uses a specialized tool and shock waves.
Extracranial
Outside the cranium, the bony dome that houses and protects the brain. As opposed to intracranial, inside the cranium.
Extracranial hematoma
A hematoma (a collection of blood) outside the cranium (skull).
Extraction
Removal of a tooth
Extradural
External (outside) to the dura mater.
Extraembryonic tissues
Intrauterine tissues derived from the zygote that support the embryo(for example, the placenta, the umbilical cord, and membranes such as the amniotic sac).
Extrafallopian
A term meaning "outside the fallopian tube." There are two fallopian tubes in female mammals, including human females. These tubes are also called oviducts. They serve as passageways connecting the egg-producing ovaries to the uterus (womb) in the pelvis.
Extraneal
Extraneal is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): icodextrin.
Extraocular
Adjacent to but outside the eyeball.
Extrapyramidal side effects
Physical symptoms, including tremor, slurred speech, akathesia, dystonia, anxiety, distress, paranoia, and bradyphrenia, that are primarily associated with improper dosing of or unusual reactions to neuroleptic (anti-psychotic) medications.
Extrapyramidal system
System consisting of nerve cells, nerve tracts and pathways that connects the cerebral cortex, basal ganglia, thalamus, cerebellum, reticular formation, and spinal neurons that is concerned with the regulation of reflex movements such as balance and walking.
Extrastriate cortex
Region of primate cerebral cortex anterior to striate cortex.
Extrasystole
A premature contraction of the heart that is independent of the normal rhythm of the heart and that arises in response to an impulse in some part of the heart other than the normal impulse from the sinoatrial (SA) node. The extrasystole is followed by a pause, as the heart electrical system "resets" itself and the contraction following the pause is usually more forceful than normal. These more forceful contractions are frequently perceived as palpitations.
Extrauterine
Outside the uterus (the womb). As opposed to intrauterine: inside the uterus. For example, normal pregnancies are intrauterine; extrauterine pregnancies can occur in the uterine tube or abdominal cavity and are distinctly abnormal.
Extrauterine pregnancy
A pregnancy that is not in the usual place and is located outside the inner lining of the uterus. A fertilized egg settles and grows in any location other than the inner lining of the uterus. The large majority (95%) of extrauterine pregnancies occur in the Fallopian tube. However, they can occur in other locations, such as the ovary, cervix, and abdominal cavity.
Extravasate
To seep through the skin, like drops of perspiration, or more accurately as plasma seeps through from the underlying capillaries to form droplets of lubrication on the adjoining vaginal mucosa.
Extraversion
A state in which attention and energies are largely directed outward from the self as opposed to inward toward the self, as in introversion.
Extremity
The extremities in medical language are not freezing cold or scorching heat but rather the uttermost parts of the body. The extremities are simply the hands and feet.
Extremophile
An organism that lives under extreme conditions. An example of an extremophile is Methanococcus jannaschii, a microbe that lives near hydrothermal vents deep beneath the sea.
Extrinsic
1. Not an essential or inherent part of a something such as a structure. 2. Coming from the outside. Extrinsic forces can mold the head before birth.
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Esophagus
The organ that connects the mouth to the stomach. Also called gullet.
Estrogen replacement therapy (ERT)
Use of the female hormone estrogen to replace that which the body no longer produces naturally after medical or surgical menopause.
Excrete
To get rid of waste from the body.
Expectant management or therapy
"Watchful waiting" or close monitoring of prostate cancer by a physician instead of immediate treatment.
External urethral sphincter muscle
A voluntary and involuntary ring-like band of muscle fibers that you voluntarily contract when you want to stop urinating.
Extrinsic asthma
Extracorporeal shock wave lithotripsy (ESWL)
A method of breaking up bile stones and gallstones. Uses a specialized tool and shock waves.
Egg
The mature female reproductive cell.
Embryo splitting
Separation of an early-stage embryo into two or more embryos with identical genetic makeup, essentially creating identical twins or higher multiples (triplets, quadruplets, etc.).
Embryoid bodies (EBs)
Irregularly shaped clumps of cellular structures that arise when embryonic stem cells or embryonic germ cells are cultured. Embryoid bodies usually contain tissue from all three of the germ layers: endoderm, mesoderm, and ectoderm. Embryoid bodies are not part of normal development and occur only in vitro.
Embryonic germ cells
Pluripotent stem cell lines that migrate, during early development, to the future gonads to form the progenitors of egg or sperm cells. The properties of EG cells are similar to those of embryonic stem cells, but may differ in the DNA methylation of some imprinted regions.
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