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9966 [12]
3 years ago
7

Which protective covering of the brain provides passageways for cerebrospinal fluid (csf) to drain into the superior sagittal si

nus?
Biology
1 answer:
IceJOKER [234]3 years ago
7 0

The protective covering of the brain that provides passageways for cerebrospinal fluid (CSF) to drain into the superior sagittal sinus is called the arachnoid mater.

 

To add, the arachnoid mater is the middle of three layers that make up the meninges, or membranes, that surround the spinal cord and brain.

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The correct answer is B. The iris would get smaller, the pupil would get bigger.

Explanation

The iris is the name by which the colored part of the eye is known, it is located between the cornea and the lens. In the central part of the iris, there is a round opening known as the pupil. The relationship between these two parts of the eye is very important to sight because between them they control the amount of light that enters the eye. This occurs when the eye is exposed to a high amount of light, the iris muscles make the pupil smaller and the iris larger, limiting light entry into the eye. When the eye is exposed to low amounts of light or darkness, the iris becomes smaller and the pupil enlarges, allowing more light to enter. According to the above, the correct answer is B. the iris would get smaller, the pupil would get bigger. Because it describes the behavior of the iris and the pupil when going from a bright room to a dark room.

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C. In addition to being advantageous the allele also exhibits overdominance.

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The correct answer is B. An atom has four protons. Hope this helped. Have an awesome day! :)

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