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Regina's Biology Blog July 2009 Archive

By Regina Bailey, About.com Guide to Biology since 1997

What is a Capillary?

Thursday July 30, 2009
A capillary is an extremely small blood vessel located within the tissues of the body, that transports blood from arteries to veins. Capillaries are most abundant in tissues and organs ... Read More

Flower Fragrances Reduce Stress

Saturday July 25, 2009
Photo Courtesy: FreeDigitalPhotos.net It has been known for some time that certain plant fragrances have the ability to calm a person's mood and reduce stress. Researchers in ... Read More

The Body's Control Center: Brain

Friday July 24, 2009
MRI Brain Scan Credit: NIH The brain is the control center of the body. Think of a telephone operator who answers incoming calls and directs them to where ... Read More

Drink Milk and Live Longer

Thursday July 23, 2009
Photo: Stefan Kühn Wikimedia Commons Researchers have discovered that drinking milk can increase a person's chances of surviving chronic illnesses such as coronary heart disease, stroke and ... Read More

Damaged Cells Alert Other Cells

Saturday July 18, 2009
This cell is undergoing apoptosis. Photo: © 2001 by the University of Central Arkansas Researchers have discovered that cells that experience DNA damage send signals to nearby cells ... Read More

Vein Function

Friday July 17, 2009
Normal VeinImage: NIH A vein is an elastic blood vessel that transports blood from various regions of the body to the heart. Veins can be categorized into four ... Read More

Sex and Self Defense in Plants

Thursday July 16, 2009
Evening primrose Photo courtesy NPS Photo Researchers have found a link between sexual reproduction in plants and self defense against insects. It appears that plants that reproduce sexually, ... Read More

Reproduction: Fertilization

Saturday July 11, 2009
Human Ovum (Egg) and Sperm © Dennis Kunkel In sexual reproduction, two parents donate genes to the young, resulting in offspring with a mix of inherited genes. These ... Read More

Artery Function

Friday July 10, 2009
An artery is an elastic blood vessel that transports blood away from the heart. There are two main types of arteries: pulmonary arteries and systemic arteries. Pulmonary arteries carry blood ... Read More

Fear and the Brain

Thursday July 9, 2009
Photo courtesy FreeDigitalPhotos.net Scientists have identified the location of the neurons in the brain that are responsible for fear conditioning. The neurons are found in the region ... Read More

Meiosis Questions

Saturday July 4, 2009
Can you identify the stage of meiosis that the following cell is in? Lily Anther© Jon C. Glase Prophase II Telophase II Metaphase II Anaphase II Test your ... Read More

Rosemary Reduces Carcinogens

Thursday July 2, 2009
Photo courtesy PDPhoto.org Summer is here and you know what that means. It's grilling time. Before you put that meat on the grill, you may want to add ... Read More

Sleep and Heart Health

Wednesday July 1, 2009
Researchers have shown that getting at least eight hours of sleep is needed for good heart health, especially for women. In fact, women who don't get at least eight hours ... Read More

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