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ryzh [129]
3 years ago
6

Autonomic centers in the ________ exert neural control over hormone secretion by the adrenal medullae. a) pineal gland b) pituit

ary gland c) thyroid gland d) thalamus e) hypothalamus.
Biology
1 answer:
frez [133]3 years ago
3 0

Answer:

The correct answer will be option-E

Explanation:

The autonomic nervous system or ANS activity in the brain is mainly controlled and regulated by the hypothalamus structure. The autonomic centres of the hypothalamus control the hormonal secretion adrenal medulla like adrenaline and norepinephrine.

The secretion of the hypothalamus controls the activity of the vasomotor center which help maintain the blood pressure.

Thus, option-hypothalamus is the correct answer.

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Why is it important to get statements from eyewitnesses soon after a crime occurrs?
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3 years ago
The suprachiasmatic nucleus influences the release of melatonin by its effect on the ________________.
anyanavicka [17]

Answer:

Pineal gland

Explanation:

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Thus, Pineal gland is the correct answer.

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3 years ago
g If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time
Elenna [48]

Answer:

a. 8.1 milligrams

b. 40.07 hours

c. 8.859 milligrams

Explanation:

If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time can be modeled by

A_{t}=10e^{-0.0173t}

Where A(t) = amount of Valium remaining in the blood after t hours

t = time or duration after the drug is taken

a. we have to calculate the amount of drug remaining in the bloodstream after 12 hours

A_{12}=10e^{-0.0173\times12}

A_{12}=10e^{-0.2076}

                = 10×0.81253

                = 8.1 milligrams

b. In this part we have to calculate the time when A(t) = 5 milligrams

5=10e^{-0.0173\timest}

\frac{5}{10}=e^{-0.0173t}

0.5 = e^{-0.0173t}

Now we take natural log on both the sides of the equation.

ln(0.5) = ln(e^{-0.0173t})

-0.69314 = -0.0173t

t = \frac{0.69314}{0.0173}

t = 40.0658

 ≈ 40.07 hours

c. In this part we have to calculate the rate, by which amount of drug will decay in the bloodstream after 7 hours.

A_{7}=10e^{-0.0173\times7}

A_{7}=10e^{-0.1211}

              = 10×0.8859

              = 8.859 milligrams

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