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Explain the mechanism by which mechanical stimulation of the skin produces a flare?
As found on Page 504 of the Pearson Human Anatomy and Physiology Laboratory Manual 9th edition.
The redness or flare observed after mechanical stimulation of the skin results from a local inflammatory response promoted by chemical mediators released by injured tissues.
These mediators stimulate increased blood flow into the area and leaking of fluid (from the capillaries) into the local tissues.
Note about an extremely sensitive skin condition:
Dermatographism: a condition in which the direct line of stimulation will swell quite obviously is called a "wheal".
What else can I help you with?
What are two ways of getting fibers from wood and explain the major differences?
Two ways of getting fibers from wood are mechanical pulping and chemical pulping. Mechanical pulping involves grinding wood logs against a grater to separate fibers, while chemical pulping involves using chemicals to dissolve lignin and separate fibers. The major difference is that mechanical pulping produces higher yield but lower quality fibers, while chemical pulping yields higher quality fibers but with more environmental impact.
What describes many observations but does not explain them?
A pattern describes many observations but does not explain them. Patterns may be observed in data or phenomena, but the underlying cause or mechanism behind the pattern is not fully understood.
What were the two ideas proposed by Lamarck to explain the mechanism of evolution?
Jean-Baptiste Lamarck proposed two ideas to explain the mechanism of evolution: the inheritance of acquired traits and the use and disuse of organs. According to Lamarck, organisms could pass on traits they acquired during their lifetime to their offspring, and that the use or disuse of certain organs could lead to changes in those organs over time.
What does Charles Darwin's theory of evolution not explain?
Charles Darwin's theory of evolution does not explain the origin of life itself, but rather how different species have evolved over time through natural selection. It also does not explain the mechanism of inheritance of traits, which was later elucidated by Gregor Mendel's work on genetics. Additionally, there are still gaps in our understanding of specific evolutionary pathways and processes, especially at more detailed levels.
What was the major weakness in Charles Darwin's theory during his life time?
One major weakness of Charles Darwin's theory during his lifetime was the lack of understanding of the mechanism of heredity. Darwin did not have access to the concept of genetics and could not explain how traits were passed down from one generation to the next. This gap in knowledge led to some skepticism and criticism of his theory of evolution by natural selection.
Explain the access mechanism of a magnetic disk how is this access mechanism different in RAID level5?
Explain the access mechanism of a Magnetic disk. How is this access mechanism different in RAID level 5?
Explain what the ap is an all or none?
it depends on the stimulation. if the stimulation is not strong enough, there might be no action potential. However, if the stimulation is strong enough, there will be an action potential
Explain how the mechanical advantage of a wheel and axle change as the size of the wheel increases.?
Explain how the mechanical advantage of a wheel and axle change as the size of the wheel increases?
The lock and key hypothesis attempts to explain the mechanism of?
enzyme specificity
Explain why the stomach produces hydrochloric acid?
The stomach produces hydrochloric acid to aid digestion
Can you explain what a mechanical reaper is?
Its a machine that harvests grain and pulse crops.
What is the likely mechanism of inheritance for a character with a large range of phenotypes Explain?
mech and cromosomes
Explain the advantages and disadvantages of sigma mechanical comparator?
advantages of sigma comparators
Explain how a simple motor functions?
it converts electrical energy into mechanical energy
Explain the most important features of the market mechanism?
Well... I don't really know :P
What is the electrochemical corrosion and explain the mechanism of rust forming in acid?
methanol-oxygen fuel cell
Explain why you become taned after sitting in the sun?
Personally, but not conclusively I imagine that one becomes tanned due to stimulation on the production of melanine in the skin.
