1Phh:s:,氵 7 Follicular cells 8 Parafollicular cells 2 Follicle with- : 3 Follicular tells 9 Interlobular 10 Venule Follicle 11 Interfollicular connective tissu 5 Connective 12 Follicle with tissue septa retracted colloid 6 Arteriole 13 Capillaries A General structure: Fibrous capsule protrudes and divides the parenchyma into lobules containing follicles and rich capillaries B. Follicle: Colloid is surrounded by singer layer epithelium 1. Epithelium: Simple squamous (hypoactive), cuboidal or columnar(hyperactive), depending upon the functional status 1717 A. General structure: Fibrous capsule protrudes and divides the parenchyma into lobules containing follicles and rich capillaries. B. Follicle: Colloid is surrounded by singer layer epithelium. 1. Epithelium: Simple squamous (hypoactive), cuboidal or columnar (hyperactive), depending upon the functional status