Thyroid gland

SIH TRH

Follicular cells

Capillaries

HVL

TSH

T4

Thyroxine (tetraiodothyronine)

5 -lodinase

Colloid

#Triiodothyronine

#lodine uptake, hormone synthesis and secretion

see Fig.

95つ

Metabolism, growth, maturation, etc.