Sunday, August 19, 2012

About your Teeth

As an embryo at certain times your teeth are starting to develop as the future line of the jaw bone thickens  bud like thickening's form along each jaw with 10 of these being made for the baby teeth, at around three months more tooth buds are made on the inside of the baby teeth which will be used for the permanent teeth which seem to appear at around 7 years old

Even though teeth are composed of a hard bone-like tissue, they are in fact derived from various skin tissues in much the same way as the placoid scales like on sharks and rays.

Each person has 4 different types of teeth in their mouth Incisor, Canine, Premolar and Molar

Each tooth is made of 4 structures

  • Enamel is the hard, white covering. Enamel protects the tooth from the wear and tear of chewing. The enamel on your teeth is the hardest substance in your body. 
  • Dentine  is below the enamel on your teeth. It's a yellow bone-like material that's softer than enamel and carries some of the nerves that tell you when something is going wrong inside your tooth.
  • Pulp   is the centre of the tooth. It's a soft tissue that contains blood vessels and nerves. The pulp is how the tooth receives nourishment and sends signals to your brain.
  • Cementum   is what covers most of the root of the tooth. It helps to attach the tooth to the bones in your jaw. A cushioning layer called the Periodontal Ligament sits between the cementum and the jawbone. It helps to connect the two.
For a more in-depth explanation of how your teeth are made link to this great page 

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Thursday, August 16, 2012

London Olympics medals by population

There are a few ways to see how each country scored in the medal tally the amount of Gold, Silver, Bronze
or by each country and their population.

This is the top 50 countries showing per population the medal tally

Total medals per million population
RankCountryGoldSilverBronzeTotal
Medals
Total Medals
/Million
1Grenada10019.1734
2Jamaica444124.1534
3Trinidad and Tobago10343.2616
4Bahamas10013.1627
5New Zealand625133.0037
6Slovenia11242.0034
7Hungary845171.7071
8Denmark24391.6235
9Australia71612351.5898
10Mongolia02351.5723
11Estonia01121.5690
12Georgia13371.5314
13Montenegro01011.5212
14Lithuania21251.4181
15Croatia31261.3393
16Cuba536141.2641
17Belarus255121.2575
18Netherlands668201.1954
19Ireland11351.0589
20Azerbaijan226101.0533
21Great Britain291719651.0310
22Qatar00221.0248
23Armenia01231.0099
24Czech Republic433100.9826
25Latvia10120.9126
26Sweden14380.8788
27Cyprus01010.8787
28Norway21140.8497
29Bahrain00110.8011
30Kazakhstan715130.7419
31Slovakia01340.7295
32Gabon01010.6218
33Russian Federation242632820.5938
34Republic of Korea1387280.5731
35Finland01230.5700
36Serbia11240.5497
37Republic of Moldova00220.5469
38Germany111914440.5412
39Canada1512180.5248
40Switzerland22040.5225
41France111112340.5181
42Puerto Rico01120.5001
43Botswana01010.4766
44Italy8911280.4571
45Ukraine659200.4459
46Romania25290.4119
47Kuwait00110.3779
48Singapore00220.3736
49Spain3104170.3614
50United States of America4629291040.3314
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Sunday, August 5, 2012

Cute olympic pics