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Bài viết của Nguyễn Mỹ Hương

Fungal Parasites and Pathogens

Parasitism describes a symbiotic relationship in which one member of the association benefits at the expense of the other. Both parasites and pathogens harm the host; however, the pathogen causes a disease, whereas the parasite usually does not. Commensalism ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Endocrine Regulation of Kidney Function

Several hormones have specific, important roles in regulating kidney function. They act to stimulate or inhibit blood flow. Some of these are endocrine, acting from a distance, whereas others are paracrine, acting locally. Renin is an enzyme that is ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Hearing

allows this vocalist, his band, and his fans to enjoy music. (credit: West Point Public Affairs, Flickr) The human ear has a tremendous range and sensitivity. It can give us a wealth of simple information—such as pitch, ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

The Urinary System and Homeostasis

All systems of the body are interrelated. A change in one system may affect all other systems in the body, with mild to devastating effects. A failure of urinary continence can be embarrassing and inconvenient, but is not life threatening. The loss of other ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Introduction to Government and Politics

Members of Britain’s royal family still captivate audiences around the world, but they have limited involvement in the day-to-day operations of their country’s government. (Photo courtesy of HerryLawford/flickr) ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Nervous System

As you read this, your nervous system is performing several functions simultaneously. The visual system is processing what is seen on the page; the motor system controls your eye movements and the turn of the pages (or click of the mouse); the prefrontal cortex ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Epithelial Tissue

Most epithelial tissues are essentially large sheets of cells covering all the surfaces of the body exposed to the outside world and lining the outside of organs. Epithelium also forms much of the glandular tissue of the body. Skin is not the only area of the ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Gender

Traditional images of American gender roles reinforce the idea that women should be subordinate to men. (Photo courtesy of Sport Suburban/flickr) The phrase “boys will be boys” is often used to justify behavior such ...

Tác giả: Nguyễn Mỹ Hương viết 15:22 ngày 25/05/2018 chỉnh sửa

Energy Flow through Ecosystems

All living things require energy in one form or another. Energy is required by most complex metabolic pathways (often in the form of adenosine triphosphate, ATP), especially those responsible for building large molecules from smaller compounds, and life itself ...

Tác giả: Nguyễn Mỹ Hương viết 15:21 ngày 25/05/2018 chỉnh sửa

Using Light Energy to Make Organic Molecules

After the energy from the sun is converted into chemical energy and temporarily stored in ATP and NADPH molecules, the cell has the fuel needed to build carbohydrate molecules for long-term energy storage. The products of the light-dependent reactions, ATP and ...

Tác giả: Nguyễn Mỹ Hương viết 15:21 ngày 25/05/2018 chỉnh sửa