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1. Gastrointestinal tract (16596 bytes)
   45: ...ting tube from the [[mouth]] to the [[anus]] (see figure). Inside this tube is a lining called the [[m...
   61: The first major muscle movement occurs when food or liqu...
   65: ... stomach, which has three mechanical tasks to do. First, the stomach must store the swallowed food and...
   69: ...ss include undigested parts of the food, known as fiber, and older cells that have been shed from the ...
   73: The glands that act first are in the mouth--the salivary glands. Saliva ...
2. Anus (740 bytes)
   1: ...ion of the anus. Most animals — from simple worms to elephants and humans — have a tubular gu...
3. Silk (8683 bytes)
   1: [[Image:Silk_worm4.jpg|right|thumb|250px|Silk Worms. Image provided by [http://classroomclipart.com C...
   2: ... appearance for which it is prized comes from the fibres triangular prism-like structure, which allows...
   5: ...edit to a Chinese Empress [[Xi Ling Shi]]. Though first reserved for the Emperors of China, its use sp...
   8: Perhaps the first evidence of the silk trade is that of an [[Egy...
   11: ...ks working for the emperor [[Justinian]] were the first to bring silkworm eggs to [[Constantinople]] i...
4. Animal (16429 bytes)
   19: &nbsp;&nbsp;&nbsp;&nbsp;[[Hemichordata]] (acorn worms)<br>
   21: &nbsp;&nbsp;&nbsp;&nbsp;[[Chaetognatha]] (arrow worms)<br>
   26: &nbsp;&nbsp;&nbsp;&nbsp;[[Nematoda]] (roundworms)<br>
   27: ...bsp;&nbsp;&nbsp;&nbsp;[[Nematomorpha]] (horsehair worms)<br>
   28: &nbsp;&nbsp;&nbsp;&nbsp;[[Onychophora]] (velvet worms)<br>
5. Deuterostome (1974 bytes)
   14: ... [[embryonic development]]; in deuterostomes, the first opening (the [[blastopore]]) becomes the [[anu...
   19: * Phylum [[Echinodermata]] ([[starfish]]es, [[sea urchin]]s, [[sea cucumber]]s, etc.)
   20: * Phylum [[Hemichordata]] (acorn worms)
   22: The phylum [[Chaetognatha]] (arrow worms) and the isolated genus [[Xenoturbella]] may also...
   24: ...' fates are not determined early on. Thus if the first four cells are separated, each cell is capable...
6. Pope Adrian III (859 bytes)
   1: ... Italy|Modena]], on a journey to [[Worms, Germany|Worms]], in modern [[Germany]].
   3: ...ided the Romans during a famine. His cult was confirmed in [[1891]], and his feast day is [[8 July]].
7. Protestant Reformation (26890 bytes)
   11: * ''[[Exsurge Domine]]'', [[Diet of Worms]] ([[1521]]), [[Peasants' War]]
   20: ...e]] [[clergy]], sensitizing the population to the financial and moral corruption of the secular [[Rena...
   22: ...o trade, industry, and burgeoning urban growth in fields as diverse as banking (the [[Fugger]] banking...
   24: ...ulation to reach its former levels in the late <b>fifteenth and sixteenth centuries,</b> the combinati...
   28: ...impatience among reformers. [[Erasmus]] and later figures like [[Martin Luther|Luther]] and [[Zwingli]...
8. Annelid (7780 bytes)
   19: ...species including the well-known [[earthworm|earthworms]] and [[leech|leeches]]. They are found in most ...
   23: ...]], and a system of longitudinal muscles. In earthworms, the longitudinal muscles are strengthened by col...
   25: ...including active and passive hunters, scavengers, filter feeders, direct deposit feeders which simply ...
   27: ...sels of various kinds, including in the true earthworms, capillaries on the body wall.
   29: ...mental units, in others the number of segments is fixed in early development.
9. Arthropod (9248 bytes)
   35: '''NOTE:''' Some classification schemes group<br/> Myriapoda and Hexapoda i...
   37: ...s, and other similar creatures. Over four out of five extant (living today) animal species are arthro...
   41: ... from growing too big. The arthropod group identified with the subphylum [[Chelicerata]] is the class...
   43: ... [[maxilla|maxillae]] right behind them. The crayfish also has walking legs and claws on its thorax r...
   50: ...h a [[Trachea | tracheal]] system; a potential difficulty considering that the skeletal structure is e...
10. Ocean (6829 bytes)
    6: ...tioned only in [[2000]], and is unique in being defined only by a line of [[latitude]] with no landmas...
    12: ...y water. Oceanic crust is the thin layer of solidified volcanic [[basalt]] that covers the Earth's [[m...
    26: ...cean is the [[Mariana Trench]] located in the Pacific Ocean near the [[Northern Mariana Islands]]. It ...
    37: *[[fish]]
    53: ...e, and over what happened to it if it did; recent findings by the [[Mars Exploration Rover]] mission i...
11. Allergy (18658 bytes)
    4: ...as "allergies". A new four-class (now five) classification scheme was designed by P. G. H. Gell and R....
    32: ... are not always able to pinpoint a patient's specific allergies if the patient has an allergy but does...
    36: ...oassay]]s. Even the levels the amount of IgE specific to certain allergens can be measured through use...
    50: ...[[bee]] stings, [[peanuts]], [[nuts]], and [[shellfish]] often carry an [[adrenalin]] needle with them...
    62: When IgE is first secreted it binds to the Fc receptors on a mas...
12. Sea nettle (4594 bytes)
    15: ...rysaora quinquecirrha'') is one species of [[jellyfish]]. It is a semi-transparent bell-shaped [[inver...
    21: ...e required in order for a jellyfish to reproduce. First, the reproductive organs in the male (the [[go...
    23: ...dusa, completing its complex life cycle. The jellyfish will live for three to six months if nothing ha...
13. Silkworm (3141 bytes)
    19: Silkworms have a good appetite. They eat mulberry leaves da...
    20: ...re thrown into boiling water, which kills the silkworms and also makes the cocoons easier to unravel. The...
    21: [[Image:Silk_worm3.jpg|thumb|250px|left|Silkworms at a silk factory in Thailand. Picture provided b...
    26: ...came out! As more came out and wrapped around her finger, she slowly felt a warm sensation. When the s...
14. Mongoose (2463 bytes)
    14: ...]s), but they are best known for their ability to fight and kill venomous [[snake]]s such as the [[cob...
    16: ...are widespread in [[Hawaii]], and have had a significant impact on native species.
15. Germanic tribes (16394 bytes)
    3: ...aga]]. The existence of a common identity is testified by the fact that they had a name for non-German...
    5: In the absence of large-scale political unification, such as that imposed forcibly by the [[Anc...
    10: ...age probably arrived ca [[2000 BC]]) is also testified by the fact that no pre-Germanic place names ha...
    20: ...eem to have come under the leadership of Germanic figures from outside, according to some scholars.
    23: ...]] invoked the threat of such attacks as one justification for his annexation of Gaul to Rome.
16. Piranha (4128 bytes)
    20: ...tooth|teeth]] (able to bite through a [[steel]] [[fishing hook]]) and an aggressive appetite for [[mea...
    22: ...r life history. They are not strictly carnivorous fishes.
    24: ...t may come from [[Tupi languages|Tupi]] 'pirá' ('fish') and 'ánha' ('cut'). It is pronounced (in [[I...
    26: ...]]/[[French Guiana]] a large kind, weighing up to five [[kilogram]]s, can be found; it seems to be an ...
    29: ... aggressiveness caused by food scarcity. Piranha fish do not have the same sensory system that enable...
17. Aztec (38742 bytes)
    9: ...ean'': a broad term that does not refer to a specific culture.
    27: ...onomically under the Aztec conqueror, and only at first. This increase in the overall welfare was like...
    34: ... had become a more appropriate analogy for this office, although as in the [[Holy Roman Empire]], the ...
    36: ... coalesced more power into an "Emperor" type of office.
    40: ...e ''Huey Tlatoani''. When Moctezuma assumed the office, he replaced the counsellors, priests and admin...
18. Aztec mythology (10599 bytes)
    6: *[[Amimitl]] - god of lakes and fishermen
    13: *[[Camaxtli]] - god of hunting, war, fate and fire
    19: ...] - a god of the underworld, [[Mictlan]] and sacrifices
    21: *[[Chantico]] - the goddess of hearth fires, personal treasure, and volcanoes
    37: ...utechuhtli'') - an ancient god of the hearth, the fire of life. Associated with the pole star and the ...
19. Worm (1491 bytes)
    3: ...ater this definition was narrowed to the modern definition which still includes several different anim...
    5: * [[Acanthocephala]] (spiny-headed worms)
    6: * [[Annelida]] (segmented worms)
    7: * [[Chaetognatha]] (arrow worms)
    8: * [[Gnathostomulid]]a (jaw worms)
20. Platypus (21900 bytes)
    26: ...le spurs, used in vicious territorial battles and fights over mates. The poison is not lethal to human...
    35: ...h the male and surfacing behind him. Finally, the fifth recorded instance included the female and male...
    38: ... yolk sac for respiration. During the second, the fingers and toes appear, and in the last, the egg to...
    53: ...er]] [[shrimp]]s, and [[yabbie]]s (freshwater crayfish) that it digs out of the riverbed with its snou...
    55: ...m]] long and blocked with plugs at intervals. She fills the nest at the end of the tunnel with reeds f...

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