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The Basement membrane is a layer of fiber that is located under epithelium or endothelium. The epithelium is the tissue that lines the surfaces and cavities of organs, whereas the endothelium lines the inside of blood vessels. It is made up of two district layers, the basal lamina and the reticular lamina which are joined together by collagen fibers. What is the function of this membrane? Read this article to discover more.
Spiders are arthropods that have 8 legs and fangs for injecting venom. There are more than 40,000 species of spider and many of these species are no larger than a few centimeters. However, some spiders can grow to impressive sizes and many of these larger spiders belong to the tarantula family. If you have ever wondered which spider is the largest in the world, keep reading to find out.
The National Football League (NFL) is the highest level of professional American football. Points are scored in a number of ways including touchdown (6 points) and the resulting extra point (1 point) or conversion (2 points), field goal (3 points) and safety (2 points). A field goal occurs during regular play and is usually taken via a place kick, although the rarely used drop kick is still permitted. To be successful and score points the field goal must be kicked between the upright posts and over the crossbar. Let’s find out who holds the record for the longest successful field goal of all time.
A basketball is the ball used in the game of the same name. The game was invented by physical education teacher James Naismith as a way to keep athletes fit over the winter months. The first ever game of basketball was played with a soccer ball, but a custom made ball was soon manufactured for the game. The materials and techniques for producing has undergone many changes throughout the years.
Bananas are a tropical fruit best known for their yellow skin, curved shape and pleasant taste. The banana plant is one of the oldest cultivated plants and today they are grown in many countries of the world. Bananas are a popular fruit because of their sweet taste, nutritional value and outer skin, which allows them to be easily transported without causing spoilage to the fruit inside. Let’s take a look at the nutritional value of this important fruit.
A shopping mall, usually simply called a mall, is a large complex that houses a number of different shops. The history of the shopping malls can be traced back to the large covered markets from the 15-18th century. It wasn’t until the 19th century that the idea for the modern shopping mall arose after the building of the Burlington Arcade in London and The Arcade in Providence, Rhode Island. The mall increased in popularity with the invention of the motor car. Today shopping malls are not only very popular, but many of them are built to an incredible scale. Let’s find out which mall is the largest ever built.
A tunnel is defined as an enclosed underground passageway with no openings except for the ends. They are used for a variety of purposes including water supply, telecommunications, power, road and/or rail traffic. They are used for a variety of reasons, such as when a bridge is not feasible or when a road/railway cannot be diverted around a large mountain. Most tunnels are only a few hundred meters in length, but the longest tunnels can run for many kilometers! Let’s find out which tunnel is the longest in the world.
Although there were many developments in the history of television, the biggest step forward came in the 1920’s when Scottish Inventor John Logie Baird was the first to invent and demonstrate a working television broadcast. Although there were many experimental broadcasts soon after this time, television didn’t really take off until the end of World War II. At this time the television became more than a novelty and it wasn’t long before it was a prominent feature in almost every home. Have you ever wondered which television show has been running for the longest? Continue reading to find out.
Eggnog is a sweet beverage popular throughout North America, especially during the Thanksgiving and Christmas seasons. Although it is most commonly consumed on its own it may also be added to other beverages, such as tea and coffee, as a flavoring. It is thought to have originated from England and the drink was brought to North America by the British where it became very popular. Today, it is still common for people to make their own eggnog, but commercially available eggnog is extremely popular. Let’s take a look at the most common ingredients of this popular drink.
A gold nugget is a naturally occurring piece of gold, which usually ranges between 82-93% in purity (equivalent to 20-22 carat). Gold nuggets can be found during certain types of gold mining and most are a smaller than a few grams. Large gold nuggets are extremely rare and highly sort after due to their incredible value. Even though many large nuggets were found during the gold rush years, there are still some being discovered today. If you have ever wanted to know the largest nugget of gold ever found, keep reading to find out!