- Anatomy and Physiology I & II (Bio 141/142)

Copyright ã 2005 Michael H. Mitchell – All Rights Reserved
(Prpared slides with written permission from 
Carolina Biological Supply Co, Burlington, N. C. and 
Wards Scientific, Rochester, New York)

Thyroid Gland - 100x 
- Follicular Cells Produce T4 (Thyroxine) which is the inactive form and is 
	converted to the active form, T3
- Parafollicular Cells produce Calcitonin which causes bone deposition and decreases 
	plasma calcium levels

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