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- Human brain (15406 bytes)
19: ...d the [[circle of Willis]]. Blood is then drained from the brain through a [[brain sinuses|network of ...
21: ...he dense fluid protects the brain and spinal cord from shock; a brain that weighs 1,500 g in air weigh...
23: ...tes the soft tissues of the brain and spinal cord from the hard surrounding bones (skull and vertebrae...
25: ...dicine, [[childbirth]] was a dangerous event that frequently resulted in the death of the mother. The...
31: ...ind]] - the set of cognitive processes related to perception, interpretation, imagination and memory, of which... - Eye (21834 bytes)
1: ...yes are used to provide the [[sense]] of [[visual perception|vision]]. Many complex [[organism]]s including so...
9: ...yonic development, while mollusk eyes grow inward from skin cells.
13: ...rm the lenses of their eyes. In this, they differ from most other arthropods, which have soft eyes. Th...
24: ...ours, the [[aqueous humour]]. Most of the light refraction occurs at the [[cornea]] which has a fixed ...
25: ...from a single point of a distant object and light from a single point of a near object being brought t... - Retina (13061 bytes)
1: ...room Clip Art]]] Many animals have eyes different from the human eye.]]
5: ...ght, it also plays a significant part in [[visual perception]]. In [[embryonal development]], the retina and t...
12: ...ina is defined by the [[ora serrata]]. The length from one ora to the other (or macula), the most sens...
14: ...e raw input from the eyes to the brain. (Modified from a drawing by [[Santiago Ramó® ¹ Cajal| Ramó® ¹ ...
18: ...e [[white blood cell]]s in the [[capillaries]] in front of the photoreceptors can be perceived as tiny... - Heart (10132 bytes)
3: ...he term ''cardiac'' means "related to the heart", from the [[Greek language|Greek]] ''kardia'' (&kappa...
9: ...maintain coordinated unidirectional flow of blood from the atria to the ventricles.
13: ...art_labelled_large.png|thumb|250px|left|Anterior (frontal) view of the opened heart. White arrows indi...
15: ... through [[pulmonary vein]]s to the left atrium. From the left atrium this newly oxygenated blood pas...
23: ...and right ''coronary arteries'', which branch off from the aorta. - Renaissance (14795 bytes)
5: ...e [[French language|French]] translation, used by French historian [[Jules Michelet]], and expanded up...
12: ... concentrate on the Renaissance as the transition from the Middle Ages to the Modern Age.
21: ... the humanist method of learning. These new ideas from the past (called the "new learning" at the time...
49: ...cumstances which helped these geniuses to come to fruition.
51: ...Burckhardt|Burckhardt]]. This argues for a change from collective neutrality towards the ''lonely geni... - Sculpture (5545 bytes)
1: ...occupying it, relating to it, and influencing the perception of it.
41: ...stol, England. This was sculpted with a chain saw from a standing tree, which was diseased and due to ...
55: * frozen [[blood]], dead [[animal]]s
64: ...ture still attached to a background, standing out from that ground in "High Relief" or "Low Relief" ([...
65: ...the round": designed by the sculptor to be viewed from any angle. - Definitions of music (17609 bytes)
1: ...]s. The word has been used to mean various things from "any euphonious and pleasing sound" to only a p...
4: ...of the Latin ''musica''. It is ultimately derived from ''mousa'', the Greek word for [[muses|muse]]. I...
10: ... refers strictly to the mathematical proportions. From this concept later resulted the romantic idea o...
12: ...cult sciences]] or [[esoteric thought]] - ranging from [[astrology]] to believing certain [[minerals]]...
14: ...t the mathematical or physical relationships in [[frequency]] that give rise to the [[musical interval... - Science (19868 bytes)
15: ...ions, rules, practices, etc. and that transitions from one paradigm to another generally does not invo...
30: An especially fruitful theory that has withstood the test of time ...
39: ...ic method]] that can serve to distinguish science from non-science.
56: ...s to desire or which is 'best'. What one projects from the currently most reasonable scientific hypoth...
58: ...eme cases relativity allow us to predict anything from the effect one moving billiard ball will have o... - Sub-Saharan Africa (3920 bytes)
1: ...trictly applied, this term would exclude [[South Africa]], which lies outside the [[Tropics]].
3: ...terranean]] and the [[Middle East]]. Sub-Saharan Africa, on the other hand, had sporadic contacts with...
5: ...least developed countries]]. (See ''[[Economy of Africa]]''.)
7: ...ssification scheme, the countries of sub-Saharan Africa are:
9: '''Central Africa''' - Pakistan (74854 bytes)
39: established_dates = From the [[United Kingdom]]<br />[[1947-08-14]]<br /...
62: ...nions of the divided Greek empire of [[Bactria]] (from the areas of the [[Panjshir province|Panjshir]]...
64: The Kushan kingdom stretched from modern-day [[Uzbekistan]] to northwestern India...
69: ... by the [[Mughals]] from [[1526]] until [[1739]]. From 1739 until the early [[19th century]] the entir...
72: ... the British by the Muslim leader [[Tipu Sultan]] from 1749 to 1799 left the remnants of the Mughal Em... - Ancient history (7857 bytes)
1: ....com Classroom Clip Art]]'''Ancient history''' is from the period of time when [[writing]] and [[histo...
3: ...y of evidence that [[Homo sapiens]] first left [[Africa]] about 60,000 years ago.
12: *African Ancient Kingdoms: [[Axumite Kingdom]], [[Kush...
18: *[[Indus Valley civilization]], unified from 2600 BC - 1900 BC.
28: *[[Urartu]] -- Kingdom from [[860 BC]] to [[585 BC]] - Hawaii (34434 bytes)
39: ...o grow due to active [[lava]] flows, most notably from [[Kilauea|Kīlauea]]. Ethnically, it is the...
51: ...of the island chain. These islands are, in order from the northwest to southeast, Niihau, Kauai, O...
54: ...iian Islands were formed by [[volcano]]es arising from the sea floor through a vent described in geolo...
58: The movement of the Hawaiian royal family from the Island of Hawaii to Maui and subsequently t...
64: ...to extend their sway and defend their communities from predatory rivals. Warfare was endemic. The gen... - Pennsylvania (32594 bytes)
42: ...ges, while others are virtually indistinguishable from non-Amish or Mennonites.
55: ...en founded a colony there as a place of religious freedom for [[Quaker]]s, and named it for the [[Lati...
59: ...rench]] during the [[French and Indian War]]. The French established numerous fortifications in the ar...
61: The colony's reputation of religious freedom also attracted significant populations of [[...
67: ...turning point of the [[American Civil War]]. Dead from this battle rest at [[Gettysburg National Cemet... - West Virginia (24258 bytes)
38: ... Maryland and Virginia. West Virginia broke away from [[Virginia]] during the [[American Civil War]]....
40: .../www.wvbridgeday.com/bridge-day-BASE-jumping.php] from the bridge), as well as many national and state...
48: ...braham Lincoln]]. Upon the secession of Virginia from the union on [[April 27]], [[1861]], anti-seces...
76: ...n a near shore environment from sediments derived from mountains to the east, in a shallow inland sea ...
90: ...sup2;), most statistics in this section are taken from the 2002 US Census of Agriculture for West Virg... - Aenesidemus (3613 bytes)
5: #different animals manifest different modes of perception;
8: #vary from time to time with physical changes, and
12: #all perceptions are relative and interact one upon another;
16: ...f modern scepticism. Cause has no existence apart from,the mind which perceives; its validity is ideal...
18: ...is destructive scepticism is essentially the same from its first crystallization by Aenesidemus down t... - Dinosaur (35313 bytes)
2: ...ption = Skull of ''[[Tyrannosaurus rex|T. Rex]]'' from the <br /> [[United States Department of the In...
16: ...of the [[Cretaceous]] period. Dinosaurs are known from both fossils and nonfossils including [[fossil]...
20: ...on|classifying]] dinosaurs, which are still known from a spotty [[fossil record]].
27: ...os'' ("lizard" or "reptile"). Contrary to popular perception, the name was chosen to express Owen's awe at the...
34: ...are [[morphology|morphologically]] quite distinct from their reptilian ancestors, and referring to bir... - Space (10661 bytes)
6: ...damental [[abstract]] mathematical [[concept]]ual framework (together with [[time]] and [[number]]) wi...
16: * That which separates objects from one another
47: ... think (and talk) about the world. Another way to frame this is to ask, "Can space itself be measured,...
49: ...s, but rather both are elements of a systematic [[framework]] we use to structure our experience. Spa...
51: ...en by [[Isaac Newton]] (space is absolute), [[Gottfried Leibniz]] (space is relational), and [[Henri P... - Solar system (21174 bytes)
26: **[[Planetesimal]]s, from which the planets were originally formed, are s...
30: **[[Meteoroid]]s are asteroids that range in size from roughly boulder sized to particles as small as ...
34: ... belt and [[scattered disk object]]s in the outer fringes.
36: ...Sedna]], with a highly elliptical orbit extending from about 76 to 928 AU, does not obviously fit in e...
37: ... Some of the dust is likely [[interstellar dust]] from outside the Solar System. - Sun (20830 bytes)
10: ! align="left" | Mean distance from<br>Earth
21: ! align="left" | Mean distance from<br>[[Milky Way]] core
55: ! align="left" | [[Escape velocity]]<br> from the surface
122: ...onally referred to as '''Sol''' to distinguish it from other "suns". Planet [[Earth]] [[orbit]]s the ...
128: ...istance of about 25,000 to 28,000 [[light-year]]s from the [[galactic centre]], completing one revolut... - Art (11479 bytes)
11: ... some extent, and [[child art]] is created by all from about the first birthday.
52: The word ''art'' derives from the [[Latin]] ''ars'', which, loosely translate...
57: * Requires creative perception both by the artist and by the audience
68: ... whether it is perceived to be ugly or beautiful. Perception is always colored by experience, so a reaction to...
74: ... is often described as a lay critique and derives from the fact that in [[Western culture]] at least, ...
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