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Bài viết của Lê Thị Khánh Huyền

Central Processing

Specific regions of the CNS coordinate different somatic processes using sensory inputs and motor outputs of peripheral nerves. A simple case is a reflex caused by a synapse between a dorsal sensory neuron axon and a motor neuron in the ventral horn. More ...

Tác giả: Lê Thị Khánh Huyền viết 15:35 ngày 25/05/2018 chỉnh sửa

Interactions of Skeletal Muscles, Their Fascicle Arrangement, and Their Lever Systems

To move the skeleton, the tension created by the contraction of the fibers in most skeletal muscles is transferred to the tendons. The tendons are strong bands of dense, regular connective tissue that connect muscles to bones. The bone connection is why this ...

Tác giả: Lê Thị Khánh Huyền viết 15:35 ngày 25/05/2018 chỉnh sửa

Torque on a Current Loop: Motors and Meters

Motors are the most common application of magnetic force on current-carrying wires. Motors have loops of wire in a magnetic field. When current is passed through the loops, the magnetic field exerts torque on the loops, which rotates a shaft. Electrical ...

Tác giả: Lê Thị Khánh Huyền viết 15:35 ngày 25/05/2018 chỉnh sửa

Reactance, Inductive and Capacitive

Many circuits also contain capacitors and inductors, in addition to resistors and an AC voltage source. We have seen how capacitors and inductors respond to DC voltage when it is switched on and off. We will now explore how inductors and capacitors react to ...

Tác giả: Lê Thị Khánh Huyền viết 15:34 ngày 25/05/2018 chỉnh sửa

Regulation of Fluid Volume and Composition

The major hormones influencing total body water are ADH, aldosterone, and ANH. Circumstances that lead to fluid depletion in the body include blood loss and dehydration. Homeostasis requires that volume and osmolarity be preserved. Blood volume is important in ...

Tác giả: Lê Thị Khánh Huyền viết 15:34 ngày 25/05/2018 chỉnh sửa

Introduction to Heat and Heat Transfer Methods

Energy can exist in many forms and heat is one of the most intriguing. Heat is often hidden, as it only exists when in transit, and is transferred by a number of distinctly different methods. Heat transfer touches every aspect of our lives and helps us ...

Tác giả: Lê Thị Khánh Huyền viết 15:34 ngày 25/05/2018 chỉnh sửa

Introduction to Gender, Sex, and Sexuality

Some children may learn at an early age that their gender does not correspond with their sex. (Photo courtesy of trazomfreak/flickr) When Harry was born, his parents, Steve and Barb, were delighted to add ...

Tác giả: Lê Thị Khánh Huyền viết 15:33 ngày 25/05/2018 chỉnh sửa

Theoretical Perspectives on Media and Technology

It is difficult to conceive of any one theory or theoretical perspective that can explain the variety of ways that people interact with technology and the media. Technology runs the gamut from the match you strike to light a candle all the way up to ...

Tác giả: Lê Thị Khánh Huyền viết 15:33 ngày 25/05/2018 chỉnh sửa

Energy and the Simple Harmonic Oscillator

To study the energy of a simple harmonic oscillator, we first consider all the forms of energy it can have We know from Hooke’s Law: Stress and Strain Revisited that the energy stored in the deformation of a simple harmonic oscillator is a form of ...

Tác giả: Lê Thị Khánh Huyền viết 15:33 ngày 25/05/2018 chỉnh sửa

Electric Power and Energy

Power is associated by many people with electricity. Knowing that power is the rate of energy use or energy conversion, what is the expression for electric power ? Power transmission lines might come to mind. We also think of lightbulbs in ...

Tác giả: Lê Thị Khánh Huyền viết 15:33 ngày 25/05/2018 chỉnh sửa