Science

Refine Search

What are the four types of bones in the human body?

Long bones have two ends connected by a shaft. This type of bone is found in the hands, legs, arms and feet, according to Judy Learn of North Seattle Community College. The thigh bone, known as the femur, is one of the best-known examples of a long bone. Flat bones are characterized by their distinctive structure. These bones consist of a layer of spongy bone tissue sandwiched between two pieces of compact bone. The ribs, collarbone and bones that form the top of the skull are flat bones.The heel bone, vertebrae and pelvic bones are classified as irregular bones because of their complex shapes..

Continue Reading

Cell biology concerns which aspects of a cell?

Cell biology is considered to have begun in the 1830s by Schleiden and Schwann. Schleiden, studying plants, and Schwann, studying animals, were the first to define a cell and state that all living beings were made out of one or more cells. This concept is known as cell theory. The expansion of technology, especially microscopes, allowed scientists to gain higher understanding of cell structure with 3D imaging and electron microscopy.\nCell biology is split into smaller fields that study a particular aspect of cell structure and function. Cell metabolism is the branch of cell biology that studi..

Continue Reading

Where can you find animal anatomy charts online?

Poster anatomy charts primarily depict pets and farm animals, including dogs, cats, cows and horses. The charts vary in detail from entire body systems, such as the nervous system, to charts detailing organs or the many anatomical systems of a single body part, such as a horse's hoof or cat's skull. As of 2015, the size of poster charts available ranged from 8.5 inches by 11 inches to 24 inches by 36 inches.

Continue Reading

What factors affect weather?

The amount of sunlight striking an air mass influences its temperature. As the air heats up, it rises in the air column and begins sucking cool air in behind it. This causes the winds that drive much of the planet’s weather systems.\nThe weather is also affected by the local geography. For example, mountains often block winds and rainfall. This causes one side of the mountain to have very high amounts of rainfall and lush vegetation, while the far side of the mountains remain very dry and desolate.\nThe air pressure in an area can impede or encourage the flow of weather systems. In general, ..

Continue Reading

How long does it take to get to Mercury?

When closest Earth and Venus ever are to each other is 48 million miles. Mariner 10, which in 1974 was the first spacecraft to get to Mercury, took 147 day to accomplish this feat. Another spacecraft, called MESSENGER, also flew by the planet in 2008. Since it was traveling at a slower velocity, it took 1,260 days to do this.

Continue Reading

What are some of the abiotic factors that influence regeneration in a tropical dry rain forest?

The low humidity and low soil moisture of dry tropical rainforests restrict water and nutrient availability for plants. Nonetheless, deciduous plants within this environment can adapt and regenerate in these dry conditions.\nThe rainfall within a dry tropical rainforest varies based on the season. Despite their ability to adapt to dry conditions, plants within this environment still germinate most favorably during the rainiest parts of the season.

Continue Reading

What causes a twisted ovary?

Mayo Clinic explains that sometimes when ovarian cysts enlarge, they force an ovary out of its typical position on the pelvis, resulting in a twisted ovary. The twisting can be extremely painful and typically requires surgical intervention to remove the cyst and return the ovary to a normal position.\nAccording to Medscape, a twisted ovary typically involves a damaged fallopian tube. While this condition can exist without any symptoms, the website explains that it is an uncommon but potent cause of severe abdominal pain.\nAccording to Wikipedia, women are at a much higher risk for a twisted ov..

Continue Reading

How fast is the speed of sound?

Unlike the speed of light, the speed of sound is not a constant and is affected by the medium through which it travels. Differences in atmospheric temperature and pressure cause variations in the speed of sound. Sound waves travel faster in liquids and non-porous solids than they do in air. In fresh water at 77 degrees Fahrenheit, sound travels at about 1497 meters per second, or nearly 3,350 miles per hour.

Continue Reading

What are examples of aerobic cellular respiration?

A common example of aerobic cellular respiration is the body’s conversion of carbohydrates and fat into energy. In other words, when the body metabolizes fat and protein, an aerobic cellular process occurs. According to class notes from the Indiana University-Purdue University Indianapolis Department of Biology, the low-carb Atkins diet and South Beach diet are examples of this process. They work by allowing the body to deplete its natural glucose reserves, which forces the body to burn protein and fat for fuel. For instance, when the body’s glucose levels are low, lipase is released to br..

Continue Reading

What is the length of a day on Pluto?

Pluto may or may not be a planet, depending on who you ask, but like undisputed and affirmed planets, Pluto orbits the sun on its own path and also rotates around its own axis. Pluto's days are long compared to Earth's, and its year is even longer in comparison: it takes Pluto more than 245 Earth years to complete a full orbit around the Sun.

Continue Reading
Showing 8301 to 8310 of 10000 (1000 Pages)