The answer is shown down below, hope this helps!
Answer:
The answer is - The calcitonin injections will increase the rat's vertebral bone density (indicated by a less-negative T score)
Explanation:
Calcitonin is produced in the thyroid gland by the parafollicular cells. It is a hormone which prevents the development of osteoporosis by reducing bone resorption and is known to increase bone density. Administering calcitonin to the rats resulted in their T score becoming less negative compared to the control rat therefore showing that it reduced the progression of osteoporosis.
Based on this action, phentolamine mesylate will prevent the vasoconstriction and tissue necrosis.
<h3>What is the purpose of phentolamine mesylate?</h3>
The first therapeutic treatment for the reversal of soft-tissue anesthesia brought on by an intraoral submucosal injection of a local anesthetic containing a vasoconstrictor is phentolamine mesylate (OraVerse), a nonselective a-adrenergic blocking medicine.
<h3>Phentolamine mesylate is what kind of medication?</h3>
A class of medications known as Alpha Blockers, Antihypertensives, and Extravasation Antidotes includes phentolamine mesylate for injection.
<h3>What is the duration of phentolamine?</h3>
Phentolamine reaches its peak serum concentrations 0.25 to 0.75 hours after oral dosing. The average half-life of elimination is 2 hours, and the duration of the effect after administration is 1 to 2 hours.
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Answer:
0.2558 g
Explanation:
1.- In titration, since you have the concentration and the volume of the titrant and the aliquot that you take, you can use the formula C1 V1 = C2 V2.
2.- To obtain C2 = C1 V1 /V2
Substitution C2 = (0.0149 M ) (9.75 ml) /25 ml = 0.0058 11 M
3.- This concentration is the number of moles that you would have in 1 L but you dissolve your tablet in 250 ml, so a rule of three.
4.- 0.005811 moles - 1 L
x - 0.250 L
X= 0.250 L x 0.005811 moles / 1L = 0.00145275 moles
5.- using your molecular weight, you can obtain the grams with another rule of three.
0.00145275 moles - x
1 mole - 176.12 g
x= 176.12 g x 0.00145275 moles / 1 mole = 0.2558 g
Hope this was useful
