The process in which living things respond to stimuli in ways to keep conditions in their body suitable for life is homeostasis. ... For example, in sodium, the atomic number is 11, and the atomic mass number is 22.98977. This means that sodium contains 11 protons, 11 electron, and 12 neutrons. ... Table salt is made from one sodium atom and one chlorine atom, so the chemical formula is NaCl. ... The loss of the one electron makes a sodium ion (Na+), which is positively charged. ...

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• Approx Pages: 17
• Grade Level: High School

It is no surprise that geriatric medicine, the medical care of the elderly, has quickly evolved into a major specialty. ... The physical changes are mainly due to the slower replacement of worn out cells, so that the body is unable to maintain complete and optimal functioning. ... The body has less strength and endurance as it ages. ... These are not all of the changes to the body that are brought about by aging, but these are the major ones. ... • A major concern with mobility problems is the tendency to falls; injuries like fractured hips and wrists may result. ...

• Word Count: 3030
• Approx Pages: 12
• Grade Level: High School

Important Facts the smallest unit of life is the cell instructions for development are contained in DNA collectively, all of the chemical processes in a cell are called metabolism producers often obtain energy from the sun homeostasis refers to the ability to maintain a constant internal environm...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School

This development is made by British electrical engineer Godfrey Hounsfield in 1967 This has one special implication for the specialty of Neuroradiology as the CAT or "computerized axial tomography" scanner is born, in medical terminology the term tomography refers to the ability to view a particular part of the body eliminating views of the x-ray shadows that bones and/or organs throw in front of and behind that view. ... Since this time as we have learned the many benefits and practical uses of the x-ray we have been able to develop and modernize this once evolutionary tool of medicine, the ...

• Word Count: 3038
• Approx Pages: 12
• Has Bibliography
• Grade Level: Graduate

For adults aged 18 to 65 years and without disability or a chronic medical condition the specific guidelines are to perform each week: 150 minutes of moderate-intensity aerobic activity OR 75 minutes of vigorous-intensity aerobic activity OR an equivalent combination AND   Muscle-strengthening activities involving all major muscle groups on 2 or more days According to the Center for Disease Control and Prevention (CDC), less than half (48%) of all adults meet the 2008 Physical Activity Guidelines of: In addition, the guidelines specify that: Aerobic activity should be performed in bouts of ...

• Word Count: 10521
• Approx Pages: 42
• Grade Level: High School

Within the bones are also stored the calcium deposits which the body may access, via resorption, when needed. ... The skeletal system provides structural support for the entire body. ... The bones of the skeleton function as levers that direct and modify the forces generated by skeletal muscles. ... Since these are gene products, they need protein producing machinery to complete their function. ... A major product of the bone-forming osteoblast is type I collagen. ...

• Word Count: 5684
• Approx Pages: 23
• Has Bibliography
• Grade Level: Undergraduate

It is a large accumulation of fat in the body. ... Even after losing as much as one-fourth of their body weight, "anorexics say that they feel fat,"" (Erlanger, 1985). ... The major psychological features seem to be the fear of maturing and the fear of losing control. ...

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Another major development occurred in the second half of the 19th century, when ceramic materials for electrical insulation were developed. ... It applies the physics of stress and strain, in particular the theories of elasticity and plasticity, to the microscopic crystallographic defects  found in real materials in order to predict the macroscopic mechanical failure of bodies. ...

• Word Count: 3326
• Approx Pages: 13
• Grade Level: Undergraduate

At the same time they are also harming their body's. ... Their mind and body craves the feeling of them. Let's take a look at the brain and it's functions. ... When drugs are repeatedly used to simulate endorphins, the body cuts down on the production of them. ...

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Group1 1 OUR FOOD SYSTEM After a long hard day of work you sit down in your comfortable recliner and open up your favorite snack. But when you reach into grab a piece, you pull out a dead bug. Suddenly many thoughts come into your mind, you wonder how did the bug get there and was it dead or...

• Word Count: 3539
• Approx Pages: 14
• Grade Level: High School

A major component of the plants and animals in a region is their overall diversity, indicative of how many species can coexist there. ... Each individual is a collection of adaptations that allow it to function effectively in its environment, and these adaptations characterize the species to which it belongs. ... The temperature of water bodies affects nearby land masses greatly, although there is less effect with distance from water. ... The degree of seasonality also has a major effect. ... Descriptions of vegetation take into account plant species and their abundance and size distribution, ...

• Word Count: 12375
• Approx Pages: 50
• Has Bibliography
• Grade Level: Undergraduate