| 영문 | muscle biopsy | 한글 | 근육생검 |
|---|---|---|---|
| 설명 | 생체내에서 근육에 대한 질병의 감별진단을 위해서 실시하는 검사법. 방법은 병터가 있는 부위나 혹은 없어도 크게 활동에 지장이 없는 근육부위의 조직을 떼어 현미경적으로 검사한다. 예를 들어 신경조직의 이상으로 인한 근육병터의 경우, 근육생검을 하여 관찰해보면 이른바 “무리진 위축(grouped atrophy)”이 나타나서, 다른 병터에 의한 것과 감별이 가능하다. |
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| 영문 | smooth muscle | 한글 | 민무늬근육, 평활근육 |
|---|---|---|---|
| 설명 | 근육 중에서 가로무늬가 없는 근. 가로무늬근에 대응되는 말이다. 척추동물에서는 심장근 이외의 내장근은 모두가 민무늬근이다. 많은 내장장기의 벽에 분포되어 있으며, 대개 돌림층과 세로층의 두 층으로 배열되어 있다. 소화관이나 요관 같은 관모양의 구조에서는 꿈틀운동을 일으켜 내용물이 아래로 내려가게 하는 작용을 한다. 항문관, 위, 요도 등에서는 돌림층의 근육이 특히 두꺼워져 내용물이 내려가는 것을 조절하는 조임근육이 형성되어 있다. 혈관에는 돌림층만 있으며, 혈관을 수축하여 혈액을 쥐어짜는 작용을 한다. 또한 자율신경의 지배를 받으며, 우리의 의지와 관계없이 작용한다. |
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| 영문 | voluntary muscle | 한글 | 수의근 |
|---|---|---|---|
| 설명 | 의지의 힘으로 움직일 수 있는 근육. 골격근 외에 피부 내의 피근, 관절주머니에 부착하고 있는 관절근 등이 여기에 속한다. 수의근의 근섬유에는 가로무늬가 있으므로 가로무늬근이라고도 하나, 심장근은 가로 무늬가 있어도 수의근이 아니므로 수의근과 가로무늬근은 동의어는 아니다. 수의근의 운동은 민무늬근보다 빠르다. 수의근이라 해도 골격근 등은 근육무리로서 움직일 수 있으나, 개개의 근육은 따로따로 마음대로 움직이게 할 수 없다. 귓바퀴근육은 사람의 경우 발육이 나빠 마음대로 움직이게 하기 어렵다. |
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| 영문 | facial muscle | 한글 | 얼굴근육 |
|---|---|---|---|
| 설명 | 얼굴의 피부를 움직이고 이에 부착되어 있는 얼굴신경의 공급을 받는 수많은 근육을 포함하는 얼굴표정근이나 모방근. |
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| DS | dead air space; dead space; deep sedative; deep sleep; defined substrate; dehydroepiandrosterone sul... |
|---|---|
| DSC | de Sanctis-Cacchione [syndrome]; desmocollin; digital scan converter; disodium chromoglycate; Doctor... |
| DSI | deep shock insulin; Depression Status Inventory; disulfide isomerase; Down Syndrome International |
| SDU | standard deviation unit; step-down unit |
| ASM | acid sphingomyelinase; airway smooth muscle; American Society for Microbiology; anterior scalenus mu... |
| down | <dermatology, zoology> Fine, soft feathers, soft, fine hair. (04 Mar 1998) |
|---|---|
| Down, John Langdon | <person> English physician, 1828-1896. See: Down's syndrome. (05 Mar 2000) |
| down promoter mutation | <molecular biology> A mutation (a change in base pair sequence) in a promoter region, this results in lower gene expression (less transcription of the gene occurs). (09 Oct 1997) |
| down-regulation | <physiology> Development of a refractory or tolerant state consequent upon repeated administration of a pharmacologically or physiologically active substance. It is the process that decreases ligand and receptor interactions or reduces the responsiveness of a cell to a stimulus following first exposure. This is often accompanied by an initial decrease in affinity of receptors for the agent and a subsequent reduction in the number of available receptors expressed on the surface which can result from internalisation of the ligand:receptor complex or from decreased expression of the receptor. Classically the concept referred to hormone receptors but contemporary usage includes other cell surface receptors. (03 Jul 1999) |
| Down's syndrome | <genetics, syndrome> A congenital disorder in which a person is born with three copies of chromosome 21 (trisomy 21). Clinical features include moderate to severe mental retardation, slanting eyes, a broad short skull, broad hands and short fingers. Other congenital abnormalities include heart defects, oesophageal atresia and an increased incidence of acute lymphocytic leukaemia. Trisomy 21 can be detected in the first few months of pregnancy by amniocentesis. Risk factors include prior child with Down's syndrome and mothers who become pregnant after age 40. This disorder was formerly known as mongolism. Incidence: 1 in 1000 births. (09 Oct 1997) |
| down syndrome | <radiology> Trisomy 21, mongolism, atlantoaxial subluxation, Wormian bones, absent/small paranasal sinuses, endocardial cushion (AV canal) defects, aberrant right subclavian artery, 2 ossification centres for manubrium (90%), 11 or 13 ribs, duodenal atresia / stenosis, tracheo-oesophageal fistula, Hirschsprung disease (12 Dec 1998) |
| turn down ratio | The lowest load at which a boiler will operate efficiently as compared to the boiler's maximum design load. (05 Dec 1998) |
| let-down reflex | <neurology, paediatrics> An involuntary reflex during breast feeding which causes the milk to flow freely. See: milk-ejection reflex (22 Sep 2002) |
| abdominal external oblique muscle | <anatomy, muscle> Origin, fifth to twelfth ribs; insertion, anterior half of lateral lip of iliac crest, inguinal ligament, and anterior layer of the rectus sheath; action, diminishes capacity of abdomen, draws thorax downward; nerve supply, thoracoabdominal nerves. Synonym: musculus obliquus externus abdominis, abdominal external oblique muscle. (05 Mar 2000) |
| abdominal internal oblique muscle | <anatomy, muscle> Origin, iliac fascia deep to lateral part of inguinal ligament, anterior half of crest of ilium, and lumbar fascia; insertion, tenth to twelfth ribs and sheath of rectus; some of the fibres from inguinal ligament terminate in the conjoint tendon; action, diminishes capacity of abdomen, flexes lumbar vertebral column (bends thorax forward); nerve supply, lower thoracic. Synonym: musculus obliquus internus abdominis, abdominal internal oblique muscle. (05 Mar 2000) |
| abdominal muscle deficiency syndrome | <syndrome> Congenital absence (partial or complete) of abdominal muscles, in which the outline of the intestines is visible through the protruding abdominal wall; in males, genitourinary anomalies (urinary tract dilation and cryptorchidism) are also found; genetics unclear. (05 Mar 2000) |
| abductor digiti minimi muscle of foot | Origin, lateral and medial processes of calcanean tuberosity; insertion, lateral side of proximal phalanx of fifth toe; action, abducts and flexes little toe; nerve supply, lateral plantar nerve. Synonym: musculus abductor digiti minimi pedis, abductor muscle of little toe, musculus abductor digiti quinti. (05 Mar 2000) |
| abductor digiti minimi muscle of hand | 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, ulnar. Synonym: musculus abductor digiti minimi manus, abductor muscle of little finger, musculus abductor digiti quinti. (05 Mar 2000) |
| abductor muscle | <anatomy> 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. The opposite of abductor is adductor. (12 Dec 1998) |
| abductor muscle of great toe | <anatomy, muscle> 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. Synonym: musculus abductor hallucis, abductor muscle of great toe. (05 Mar 2000) |