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What is the name of the gland that excretes water and salt through the skin?

The type of gland that is primarily responsible for the excretion of salt and water is the eccrine sweat gland. This type of sweat gland is located in nearly every area of the skin and is partly responsible for keeping the body's temperature cool. Apocrine sweat glands do not primarily excrete salt and water, and they are found in the pubic regions of the body after a person has reached puberty.

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Why does the Earth spin on its axis?

Imagine two people walk into each other. If they hit directly, they both come to a stop in front of each other. If they instead only clip their shoulders, they will spin slightly and move past one another. In space, almost nothing hits anything straight on, and these collisions impart spin because of their angular momentum. As there is no friction, normally these bodies will continue to spin unless they are pulled on by another object's gravity.

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What are some facts about research on Mars?

Scientific research has already determined that Mars sits 141,633,260 miles from the Sun and takes 687 days to complete its orbit around the sun. Its days are similar to those on Earth, with Mars taking 24 hours and 37 minutes to make a complete planetary rotation. The temperatures range from minus 125 degrees F to 23 degrees F. Gravity is roughly a third of gravity on Earth. A 100-pound person would weigh only 38 pounds on Mars.\nSome of the most effective research missions to Mars involve the rovers Spirit and Opportunity. Both were launched in 2003 and arrived on different ends of Mars in 2..

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Where is the gall bladder located in the human body?

As part of the biliary tract, the gall bladder helps digestion with the movement of bile. It also breaks up fats and drains waste products from the liver. A common condition affecting the gall bladder is gallstones, which are small, hard deposits formed when components of the bile crystallize. While most gallstones are harmless, large ones may block the gall bladder, causing a painful inflammation.

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Is tongue rolling genetic?

According to Dr. McDonald, twin studies and family studies show that while genetics are involved in tongue rolling, there are also environmental factors to consider. The University of Utah Health Sciences genetics department agrees that there are environmental factors in tongue rolling and further states that tongue rolling can be learned over time. Dr. McDonald notes that between 65 percent and 81 percent of people can roll their tongues, and women are more likely to be able to roll their tongues.

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What are the five functions of lipids?

The five functions of lipids include:Acting as an energy source - although the body uses carbohydrates as its primary form of energy, it can turn to lipids when it needs a reserve. Most people weighing 154 pounds have enough lipids to carry them through 24 to 30 days without food.Protecting and structuring organs - various organs are surrounded by fat pads that protect them and give them structure. For example, the renal fat pads keep the kidneys in place and prevent kinks in the ureters.Insulation - layers of fat under the skin insulate the body when temperatures drop.Generating heat - when s..

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Where can you access NASA moon photographs?

Moon.nasa.gov provides information and photographs of the Earth's moon. The multimedia section compiles the best lunar images and videos from different positions, mission sources and lunar explorations. The image gallery includes photographs from the Apollo 11 space mission to recent pictures of lunar eclipses and phases of the moon.\nNASA also posts timely photos of the moon taken by the Lunar Orbiter, a spacecraft designed to take pictures of the moon. The photos are accessible by searching and selecting the Lunar Reconnaissance Orbiter under the Missions section of NASA.gov. Publish un..

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What are atoms made of?

Protons and neutrons come together in the center of the atom to form the nucleus. Electrons orbit the nucleus. These electrons are bound to the nucleus by an electromagnetic force. Protons have a positive charge, while electrons carry a negative charge. Neutrons do not have a charge. Protons and neutrons can be further divided into particles called quarks. Electrons can not be further broken down because they are fundamental particles. Atoms are the basic building blocks of matter. Atoms can join together to form molecules which make up most of life. All elements found on the periodic table ar..

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How do bones grow?

By the time a person reaches the age of 25, the bone fusion process is complete. At this age, growth has completely stopped and the bones will be as large as they will ever be. Bones are important because they help a person move, support muscle tissue and protect the internal organs. Bones in the human body are always changing and are made up of the outer surface called the periosteum, compact bone and bone marrow.

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What distinguishes urethane and polyurethane from one another?

Urethane and polyurethane are both sealants commonly used in painting and in flooring. They form distinct finishes, with polyurethane darkening wood noticeably, while urethane dries quickly and forms a thin veneer. They are most often used indoors, but outdoor sealants are also manufactured and used in contracting and building.The finish formed with polyurethane displays the following qualities:Resistant to blunt force and solvents.Dark, thick gloss.Slow setting period.Polyurethane is formulated to resist chipping and staining. It takes time to set, but it forms a durable bond that is stain-re..

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