<span>Clindamycin ........</span>
The medical term that refers to a blood study that gives a direct measurement of the amount of thyroxin in the patients blood is the THYROXIN LEVEL
https://humanbodyanatomy.co/parts-of-the-body-anatomy/parts-of-the-body-anatomy-anterior-and-posterior-parts-of-the-body-anatomy-human-anatomy-chart/
this link has a picture with the posterior region.