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NARA [144]
2 years ago
7

Why would 131I be used to specifically destroy the thyroid gland and have minimal effect on other cells And tissues in the body

Medicine
1 answer:
bonufazy [111]2 years ago
7 0

Answer:

The thyroid gland absorbs almost all of the iodine in the body. When radioactive iodine (RAI), also known as I-131, is given to the body as a liquid or capsule, it becomes concentrated in thyroid cells. Radiation can kill the thyroid gland and any other thyroid cells or tissues (including cancer cells) that absorb iodine, without damaging any other organs.

Explanation:

The thyroid gland is an organ that belongs to the endocrine system and its function is to synthesize hormones that are responsible for controlling the body's metabolism, this gland has an important characteristic and that is that the hormones it produces have a unique chemical composition due to They are the only hormones that contain iodine in their structure, this in turn is essential for its functioning because the body does not synthesize it and it must be consumed in the diet. When a small dose of the radiopharmaceutical iodine 131 (Sodium Iodide 131I) is consumed, it is absorbed into the bloodstream and concentrated by the thyroid gland, where it begins to destroy cancer cells in the gland. 131I quickly attaches itself to thyroid cells to destroy them, but continues to emit radioactivity for a long time: it takes 8 days to halve. The beta radiation particles of 131I, which we call radioiodine or radioactive iodine, have a range of 2mm and act for a long time in a constant way. Fortunately, the body's metabolism quickly expels iodine through the urine, so that in one day the amount of iodine has decreased considerably.

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Answer:

Taking into account that:

The flow velocity u of a fluid is a vector field

u = u (x, t)

What gives the velocity of a Fluid Plot at position x y time t.

q = || u ||

Now if the flow is continuous as it happens in the blood vessels then:

The flow of a fluid is said to be constant if it does not move over time, that is why the variant would be 0.

Explanation:

As for the pump with narrow vessels, there the area would be less, therefore the flow also and the flow velocity as well. Adding that the friction with the walls increases as it is narrower, thus generating an increase in pressure with the flow of the liquid.

So this is where we have to put emphasis on the biophysics branch that explains the following:

The Venturi effect is explained by the Bernoulli Principle and the principle of continuity of mass. If the flow rate of a fluid is constant but the section decreases, the speed necessarily increases after crossing this section. By the theorem of conservation of mechanical energy, if the kinetic energy increases, the energy determined by the value of pressure necessarily decreases.

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3 0
3 years ago
the nurse is to administer a potassium supplement to the client. the nurse does not check the potassium level prior to administe
lianna [129]

The nurse is to administer a potassium supplement to the client and does not check the potassium level prior to administering the medication and later finds that the potassium level was at a critical high which means that the nonmaleficence principle was violated which is denoted as option B.

<h3>What is Nonmaleficence? </h3>

This refers to the duty of a professional such as healthcare workers in ensuring that there is no harm done to the client or patient.

In this scenario, negligence caused the nurse to administer a medication which had a critically high amount of potassium which is harmful to the body.

This is therefore the reason why nonmaleficence was chosen as the correct choice.

Read more about Nonmaleficence here brainly.com/question/7448182

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The options are

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Answer:

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Because they are lipids, they can diffuse through cell membranes, and once inside the target cell they bind to receptors in the cytoplasm or the nucleus and alter gene expression.

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