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valkas [14]
4 years ago
14

Describe the basic parts and functions of the circulatory system

Biology
1 answer:
Alex Ar [27]4 years ago
8 0
<span>blood, lungs and blood vessels that make up the circulatory system. ... The network of veins, arteries and blood vessels transports oxygenated blood from the heart, delivers oxygen and nutrients to the body's cells and then returns deoxygenated blood back to the heart</span>




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In a cell,which molecule is used as a messenger to carry instructions from the nucleus into the cytoplasms
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This copy, which contains the instructions to make 1 protein, is called an mRNA or messenger RNA. After the mRNA is made, it is trimmed down to a final size, and shipped out of the nucleus! When the mRNA gets into the cytoplasm, it is made into protein

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Which statement best describes cancer cells?. . A. They grow as a single layer of cells.. B. They cease to reproduce after 20–50
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Answer: The statement that best describes cancer cells is option D.

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4 years ago
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Explain how seasonal fires benefit grassland ecosystems.
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Answer:

Without fires, there would be no life on Earth . Fires are key to maintaining the proper oxygen concentration in the atmosphere; fire regulates the carbon cycle and life, as we know it, is based precisely on carbon

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3 years ago
Susan, a 67 year old female, is experiencing ataxia, or poor muscle coordination. when doctors perform a romberg test, the resul
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Correct Completed  Questions; Susan, a 67 year old female is experiencing ataxia, or poor muscle coordination. Doctors perform a neurological exam and they find that Susan is not positive for the Romberg test. Describe what these findings suggest about the sources of Susan's ataxia.

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In order to test for balance and positioning(proprioception)   as a measure of  neurological function, or to test level   of intoxication alcohol  during driving, Romberg test is usually conducted,which can be negative or positive.It is generally used to investigate the cause of loss of motor control in individuals.

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A positive result  showed that her  ataxia was due to loss of positioning due to loss of  sensory from sensory neurons.However if negative as in the case of Susan, then it  is to due to abnormality/dysfunctions   in the cerebellum, and not due to loss of sensory functions,

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I don’t know the answer but i can recommend two app that might

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