| 영문 | optic nerve | 한글 | 시각신경 |
|---|---|---|---|
| 설명 | 시각을 인지하는 신경. 이 신경은 단지 감각신경으로서만 작용한다. 따라서 어떤 사물을 따라 눈을 움직일 수 있는 것은 이 시각신경과는 무관하다(이것은 눈돌림신경(oculomotor nerve)에 의해 가능하다). 또한 시각신경은 고위중추신경계인 뇌에서 직접 분지하므로 손상시 재생은 불가능하며, 이에 대한 치료법은 없다. |
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| 영문 | nerve | 한글 | 신경 |
|---|---|---|---|
| 설명 | 여러 기관들의 서로간 상호연결체계가 바로 신경계이다. 이러한 신경계는 각 신경세포들에 의해 이루어지고 있으며, 여기에는 중추신경계(central nerve system: CNS)와 말초신경계(peripheral nerve system: PNS)가 있다. 중추신경계란 뇌와 척수를 말하며, 말초신경계는 12쌍의 뇌신경(cranial nerve: 뇌에서 기시하여 주로 얼굴부위와 목 부위에 분포한다)과 31쌍의 척수신경(spinal nerve: spinal cord에서 각기 양쪽으로 쌍을 이루어 나오는데 주로 목이하부위의 신체 각 부분으로 분포하게 된다)으로 구성되어 있다. 또한 말초신경계에는 앞에서 말한 뇌신경과 척수신경외에 자율신경계가 존재한다. 자율신경계는 다시 교감신경과 부교감신경으로 나뉘어져 서로간의 올바른 상호작용으로 몸속에서 여러 가지 작용을 수행한다. |
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| 영문 | nerve cell | 한글 | 신경세포 |
|---|---|---|---|
| 설명 | 신경세포는 올바른 신경전달을 위한 각 부분별로 나뉘어져 있다. 신경세포에서는 전해져오는 자극을 전기적인 신호로 바뀌어 보내거나 받게 된다. 이런 전기적인 현상은 각 신경세포내에 존재하는 각 이온채널(ion channel: ion이란 나트륨, 칼륨 등을 지칭하는 말들로써, 이들이 세포막에 의해 나뉘어질 때 생기는 전압차가 전기적 자극을 일으키고 유지하는데 결정적인 역할을 한다)들의 작용에 의해 이루어지게 된다. |
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| EMG/NCV | electromyography/nerve conduction velocity [test] |
|---|---|
| MNCV | motor nerve conduction velocity |
| NCV | nerve conduction velocity; noncholera vibrio |
| SCV | sensory nerve conduction velocity; smooth, capsulated, virulent; subclavian vein; squamous-cell carc... |
| SNCS | sensory nerve conduction studies |
| prospective study | <epidemiology> A study in which people are initially enrolled and then followed up at subsequent times. (05 Dec 1998) |
|---|---|
| study | 1. To apply the mind to; to read and examine for the purpose of learning and understanding; as, to study law or theology; to study languages. 2. To consider attentively; to examine closely; as, to study the work of nature. "Study thyself; what rank or what degree The wise Creator has ordained for thee." (Dryden) 3. To form or arrange by previous thought; to con over, as in committing to memory; as, to study a speech. 4. To make an object of study; to aim at sedulously; to devote one's thoughts to; as, to study the welfare of others; to study variety in composition. "For their heart studieth destruction." (Prov. Xxiv. 2) Origin: OE. Studie, L. Studium, akin to studere to study; possibly akin to Gr. Haste, zeal, to hasten; cf. OF. Estudie, estude, F. Etude. Cf. Etude, Student, Studio, Study, v. I. 1. A setting of the mind or thoughts upon a subject; hence, application of mind to books, arts, or science, or to any subject, for the purpose of acquiring knowledge. "Hammond . . . Spent thirteen hours of the day in study." (Bp. Fell) "Study gives strength to the mind; conversation, grace." (Sir W. Temple) 2. Mental occupation; absorbed or thoughtful attention; meditation; contemplation. "Just men they seemed, and all their study bent To worship God aright, and know his works." (Milton) 3. Any particular branch of learning that is studied; any object of attentive consideration. "The Holy Scriptures, especially the new Testament, are her daily study." (Law) "The proper study of mankind is man." (Pope) 4. A building or apartment devoted to study or to literary work. "His cheery little study." 5. A representation or rendering of any object or scene intended, not for exhibition as an original work of art, but for the information, instruction, or assistance of the maker; as, a study of heads or of hands for a figure picture. 6. A piece for special practice. See Etude. Source: Websters Dictionary (01 Mar 1998) |
| study, crossover | A type of clinical trial in which the study subjects receive each treatment in a random order. In this type of study, every patient serves as his or her own control. (12 Dec 1998) |
| study, cross-sectional | A study done at one time, not over the course of time. A cross-sectional study a disease such as aids might be designed to learn its prevalence and distribution within the population at one point in time. Also known as a synchronic study. (12 Dec 1998) |
| study, diachronic | See: Study, longitudinal. (12 Dec 1998) |
| study, longitudinal | A study done over the passage of time. For example, a longitudinal study of children with down syndrome (trisomy 21) might involve the study of 100 children with this condition from birth to 10 years of age. Also called a diachronic study. The opposite of a cross-sectional (synchronic) study. (12 Dec 1998) |
| study, preclinical | A study to test a drug, procedure or medical treatment in animals. The aim is to collect data in support of safety. Preclinical studies are required before clinical trials can be started. (12 Dec 1998) |
| study, synchronic | See: Study, cross-sectional. (12 Dec 1998) |
| synchronic study | <epidemiology> A study in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with longitudinal studies which are followed over a period of time. Synonym: horizontal study. (18 Jul 2002) |
| diachronic study | A study done over the course of time. For example, a longitudinal study of children with Down syndrome (trisomy 21) might involve the study of 100 children with this condition from birth to 10 years of age. Also called a longitudinal study. The opposite of a synchronic (cross-sectional) study. (12 Dec 1998) |
| double-blind study | A study in which neither the experimenter nor any other assessor of the results, including patients, know which group is subject to which procedure, thus helping assure that the biases or expectations of either will not influence the results. (05 Mar 2000) |
| epidemiologic study characteristics | Types and formulations of studies used in epidemiological and clinical research. (12 Dec 1998) |
| twin study | A method of detecting genetic causes in human traits and genetic factors in behaviour using sets of twins. (12 Dec 1998) |
| foetal doppler study | <radiology> Non-stress test (NST), external monitoring for 20 minutes; poor specificity, greater than4 foetal heart accelerations (greater than15 bpm over baseline for 15 seconds) following foetal movement in foetus greater than34 weeks, no heart accelerations in immaturity, sleep, maternal sedation contraction stress test (CST), external monitoring after oxytocin or maternal breast stimulation, greater than 3 uterine contraction in 10 minutes; 50% specificity uterine and umbilical artery waveform, elevated systolic:diastolic ratio = increased vascular resistance foetal aortic flow volume, 185-246 ml/kg/min see also: biophysical profile, intrauterine growth retardation (IUGR) (12 Dec 1998) |
| follow-up study | Study in which persons exposed to risk or given a designated preventive or therapeutic regimen are observed over a period or at intervals to determine the outcome of the exposure or regimen. (05 Mar 2000) |