| 영문 | blood | 한글 | 혈액, 피 |
|---|---|---|---|
| 설명 | 순환기, 즉 심장과 혈관 안을 순환하는 유동성의 조직을 말한다. 혈액은 전체 체중의 약 8%를 차지하며, 비중은 1,056~1,059, 점도는 약 4.5, pH는 7.4이다. 혈액은 액체성분인 혈장과 거기에 떠돌고 있는 세포성분으로 구성되어 있다. 혈장은 전체 혈액의 55%를 차지하며 수분, 단백질, 혈당, 지방질, 무기염류, 질소화합물로 이루어진다. 세포성분은 전체 혈액의 45%를 차지하며 적혈구, 백혈구, 혈소판으로 이루어져 있다. 혈액의 주요 기능은 전신 조직으로 산소와 영양분 같은 필요한 물질을 운반하며 불필요한 물질을 배설기관으로 운반하는 일이다. 그 밖에 생체에 해로운 물질이나 세균을 제거하고, 내부환경의 향상성을 유지하며, 체온유지와 생체 방어 기능을 한다. 사람의 혈액은 여러 가지 세포 혈구와 그 세포를 포함하는 맑은 액체인 혈장로 구성되어 있다. 혈구는 적혈구, 백혈구, 혈소판으로 구성되어 있다. 적혈구는 붉은 색을 띠는 세포로 산소를 몸의 조직으로 운반하는 역할을 한다. 혈소판은 혈액응고에 중요한 역할을 하는 세포이다. 백혈구는 인간의 면역에 관계하는 세포이며 구체적으로 다음과 같은 세포들이 있다. 1.과립구(granulocyte): 과립구란 백혈구의 60%를 차지하며, 세포속에 특이한 과립을 가지고 있는 세포이며, 다음과 같은 3가지의 세포가 이곳에 포함이 된다. -호염기구(basophil): 염기성염색약에 잘 염색되는 과립을 가지고 있다. 불규칙한 모양의 세포로 푸른 색을 띠는 과립이 너무 많이 있어서 핵이 잘 보이지 않는다. -호산구(eosinophil): 산성염색약에 잘 염색되는 과립을 가지고 있고, 대개 기생충의 감염이나, 알러지에서 많이 증가한다. 대개 2개의 핵을 가지고 있으며 핵사이에 가는 실같은 것으로 이어져 있다. -호중구(neutrophil): 산성염색약이나 염기성염색약에 의하여 모두 잘 염색되는 과립을 가지는 세포로 대개 3개의 핵을 가진다. 그리고 핵사이에 가는 실같은 구조물이 있어서 핵을 서로 이어주고 있다. 2.단핵구(monocyte): 다각형모양을 가진 세포로 과립을 가지고 있지 않다. 외계로부터 들어온 물질을 잡아먹는 역할과 그것에 대한 정보를 제공하는 역할을 하여 면역에 관계한다. 이것이 혈액 중에 존재하지 않고 조직에 고정되어 있는 경우에 이것을 큰포식세포라고 한다. 3.림프구(lymphocyte): 작은 원형의 세포로 면역에 중추적인 역할을 한다. |
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| 영문 | blood gas | 한글 | 혈액가스, 혈액기체 |
|---|---|---|---|
| 설명 | 혈액 속에 용해되어 있는 산소, 이산화탄소, 질소 따위의 기체. 혈액의 산성-염기성의 정도를 측정할 수 있다. |
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| 영문 | blood test | 한글 | 혈액검사 |
|---|---|---|---|
| 설명 | 혈액형이나 질병 유무 따위를 알기 위하여 피를 뽑아 행하는 검사. 몸 전체의 장기나 조직에 병터가 있으면 이들 성분에 변화가 있게 되어 진단에 큰 도움을 준다. |
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| 영문 | blood-brain barrier | 한글 | 혈액뇌장벽 |
|---|---|---|---|
| 설명 | 혈액으로부터 뇌로는 지질용해성이 높은 약물밖에 이행되지 않는다. 수용성의 약물을 뇌로 이행되지 않게 하고 있는 것이 혈액뇌장벽이며 뇌의 모세혈관 내피세포, 모세혈관 주위의 세포가 장벽이 되고 있다. 물질교환은 수동확산에 의해 이루어지지만, 뇌의 생리적 활동에 필요한 물질은 이온형이라도 담체를 통해 이행된다. |
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| 영문 | blood volume | 한글 | 혈액량 |
|---|---|---|---|
| 설명 | 체내에 존재하는 혈액의 총량으로서, 보통 리터 또는 체중 1kg에 대하여 리터수로 표시한다. |
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| TC/HDL | total cholesterol/high density lipoproteins [ratio] |
|---|---|
| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
| BlT | bleeding time; blood test; blood type, blood typing |
| CBL | circulating blood lymphocytes; chronic blood loss; cord blood leukocytes |
| DRBC | denaturated red blood cell; dog red blood cell; donkey red blood cell |
| total cholesterol | A combination of the LDL, HDL and VLDL levels in the bloodstream. This is the cholesterol measurement that is given by the standard home cholesterol test kit. Less than 200 is desirable, 200 to 239 is considered borderline high, over 240 is considered high. (27 Sep 1997) |
|---|---|
| ldl cholesterol | Low-density lipoprotein cholesterol (the bad cholesterol). (12 Dec 1998) |
| lecithin-cholesterol acyltransferase | <enzyme> An enzyme that reversibly transfers an acyl residue from a lecithin to cholesterol, forming a 1-acylglycerophosphocholine (a lysolecithin) and a cholesterol ester; a deficiency of this enzyme leads to an accumulation of unesterified cholesterol in plasma resulting in anaemia, proteinuria, renal failure, and corneal opacities; LCAT is also low in individuals with fish-eye disease. Synonym: lecithin acyltransferase. Acronym: LCAT (05 Mar 2000) |
| lecithin-cholesterol transferase | A plasma enzyme that catalyses the uptake of cholesterol esters by intermediate-density lipoproteins formed by high density lipoproteins. (05 Mar 2000) |
| lipoproteins, hdl cholesterol | Cholesterol which is contained in or bound to high density lipoproteins (hdl). High density lipoproteins transport cholesterol from peripheral tissues to the liver thereby acting as a scavenger to prevent excess accumulation and deposition of cholesterol in blood vessels. (12 Dec 1998) |
| lipoproteins, ldl cholesterol | Cholesterol which is contained in or bound to low density lipoproteins (ldl). Ldl transport cholesterol to peripheral tissues and regulate de novo cholesterol synthesis at these sites. Atherosclerosis is caused by the deposit of cholesterol on the walls of blood vessels, because of high concentrations of ldl cholesterol in plasma. (12 Dec 1998) |
| lipoproteins, vldl cholesterol | Cholesterol which is contained in or bound to very low density lipoproteins (vldl). High concentrations of vldl cholesterol are found in type IIb and type v hyperlipoproteinaemia. The end product of vldl cholesterol catabolism is ldl (low density lipoproteins). (12 Dec 1998) |
| cardiac output, high | A state of elevated cardiac output. Conditions that lower peripheral vascular resistance, such as anaemia, arteriovenous fistulas, thyrotoxicosis, and pregnancy, are among the most important factors augmenting the venous return and therefore elevating cardiac output. Increased cardiac output also occurs in muscular exercise, fever, and severe anoxia. (12 Dec 1998) |
| radiotherapy, high-energy | Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; X-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle. (12 Dec 1998) |
| mean higher high water | <marine biology> The average height of the higher high water over a 19-year period. For shorter periods of observation, corrections are applied to eliminate known variations and reduce the result to the equivalent of a mean 19-year value. (09 Oct 1997) |
| mean high water | <marine biology> The average height of the high water over a 19-year period. For shorter periods of observation, corrections are applied to eliminate known variations and reduce the result to the equivalent of a mean 19-year value. All high-waters heights are included in the average where the type of tide is either semidiurnal or mixed. Only the higher high-water heights are included in the average where the type of tide is diurnal. So determined, mean high water in the latter case is the same as mean higher high water. (09 Oct 1997) |
| chromatography, high pressure liquid | Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. (12 Dec 1998) |
| pregnancy, high-risk | Pregnancy in which the mother and/or foetus are at greater than normal risk of morbidity or mortality. Causes include lack of adequate prenatal care, previous obstetrical history, pre-existing maternal disease or pregnancy-induced disease, and multiple gestation, as well as advanced maternal age. (12 Dec 1998) |
| hearing loss, high-frequency | Hearing loss in frequencies above 1000 hertz. (12 Dec 1998) |
| high | 1. Elevated above any starting point of measurement, as a line, or surface; having altitude; lifted up; raised or extended in the direction of the zenith; lofty; tall; as, a high mountain, tower, tree; the sun is high. 2. Regarded as raised up or elevated; distinguished; remarkable; conspicuous; superior; used indefinitely or relatively, and often in figurative senses, which are understood from the connection. Elevated in character or quality, whether moral or intellectual; preeminent; honorable; as, high aims, or motives. "The highest faculty of the soul." Exalted in social standing or general estimation, or in rank, reputation, office, and the like; dignified; as, she was welcomed in the highest circles. "He was a wight of high renown." (Shak) Of noble birth; illustrious; as, of high family. Of great strength, force, importance, and the like; strong; mighty; powerful; violent; sometimes, triumphant; victorious; majestic, etc.; as, a high wind; high passions. "With rather a high manner." "Strong is thy hand, and high is thy right hand." (Ps. Lxxxix. 13) "Can heavenly minds such high resentment show?" (Dryden) Very abstract; difficult to comprehend or surmount; grand; noble. "Both meet to hear and answer such high things." (Shak) "Plain living and high thinking are no more." (Wordsworth) Costly; dear in price; extravagant; as, to hold goods at a high price. "If they must be good at so high a rate, they know they may be safe at a cheaper." (South) Arrogant; lofty; boastful; proud; ostentatious; used in a bad sense." "An high look and a proud heart . . . Is sin." (Prov. Xxi. 4) "His forces, after all the high discourses, amounted really but to eighteen hundred foot." (Clarendon) 3. Possessing a characteristic quality in a supreme or superior degree; as, high (i. E, intense) heat; high (i. E, full or quite) noon; high (i. E, rich or spicy) seasoning; high (i. E, complete) pleasure; high (i. E, deep or vivid) colour; high (i. E, extensive, thorough) scholarship, etc. "High time it is this war now ended were." (Spenser) "High sauces and spices are fetched from the Indies." (Baker) 4. Strong-scented; slightly tainted; as, epicures do not cook game before it is high. 5. Acute or sharp; opposed to grave or low; as, a high note. 6. Made with a high position of some part of the tongue in relation to the palate, as e (eve), oo (food). High admiral, the chief admiral. High altar, the principal altar in a church. High and dry, out of water; out of reach of the current or tide; said of a vessel, aground or beached. High and mighty arrogant; overbearing. High art, art which deals with lofty and dignified subjects and is characterised by an elevated style avoiding all meretricious display. High bailiff, the chief bailiff. High Church, and Low Church, two ecclesiastical parties in the Church of England and the Protestant Episcopal Church. The high-churchmen emphasize the doctrine of the apostolic succession, and hold, in general, to a sacramental presence in the Eucharist, to baptismal regeneration, and to the sole validity of Episcopal ordination. They attach much importance to ceremonies and symbols in worship. Low-churchmen lay less stress on these points, and, in many instances, reject altogether the peculiar tenets of the high-church school. See Broad Church. High constable, the open sea; the part of the ocean not in the territorial waters of any particular sovereignty, usually distant three miles or more from the coast line. High steam, steam having a high pressure. High steward, the chief steward. High tea, tea with meats and extra relishes. High tide, the greatest flow of the tide; high water. High time. Quite time; full time for the occasion. A time of great excitement or enjoyment; a carousal. High treason, treason against the sovereign or the state, the highest civil offense. See Treason. It is now sufficient to speak of high treason as treason simply, seeing that petty treason, as a distinct offense, has been abolished. High water, the utmost flow or greatest elevation of the tide; also, the time of such elevation. High-water mark. That line of the seashore to which the waters ordinarily reach at high water. A mark showing the highest level reached by water in a river or other body of fresh water, as in time of freshet. <botany> High-water shrub, a composite shrub (Iva frutescens), growing in salt marshes along the Atlantic coast of the United States. High wine, distilled spirits containing a high percentage of alcohol; usually in the plural. To be on a high horse, to be on one's dignity; to bear one's self loftily. With a high hand. With power; in force; triumphantly. "The children of Israel went out with a high hand." In an overbearing manner, arbitrarily. "They governed the city with a high hand." . Synonym: Tall, lofty, elevated, noble, exalted, supercilious, proud, violent, full, dear. See Tall. Origin: OE. High, hegh, hey, heh, AS. Heah, hh; akin to OS. Hh, OFries. Hag, hach, D. Hoog, OHG. Hh, G. Hoch, Icel. Hr, Sw. Hog, Dan. Hoi, Goth. Hauhs, and to Icel. Haugr mound, G. Hugel hill, Lith. Kaukaras. Source: Websters Dictionary (01 Mar 1998) |