2

1

Colloid containing thyroglobulin /Stored thyroid hormone

Follicular cells (nuclei of)

2 (cells)

1

3

Area of parafollicular or C cells

Thyroid follicles

Colloid containing thyroglobulin

12

Acinar tissuePancreatic Islet

21

Islets of LangerhansAcinar Tissue

1

Acinar tissue

Enlargement of an Islet of Langerhans

Acinar tissue

1

2

Medulla

3 regions of the cortex

1

2

3

5

4

Cortex

Cortex

Cortex

Adrenal medulla

sinus

3 (cells)2 (whole thing)

Endocrine cell inside the seminiferous tubule = 1

Interstitial cellsSeminiferous tubules of testis

Endocrine cell in the seminiferous tubule = sustentacular /Sertoli

Seminiferous Tubules of the Testes

1 2

3

Seminiferous Tubules of the Testes

Interstitial cellsArea of sperm developingCells with some sustentacular cells

lumen

12

Sustentacular cells amongSperm developing cells

Interstitial cells (of Leydig)

12

Blood vessel surrounded by interstitial cells

2

4

3

1= whole structure

antrum

Corpus luteum

Granulosa /Follicular cells

Grafian / tertiaryfollicle

12

Fluid filled antrumGranulosa / follicular cells

1

2

3 = Whole structure shown above

Fluid filled antrum

Granulosa / follicular cells

3 = Grafian / tertiary follicle

Large circular structure?

Corpus Luteum

1 2

3

Pars distalis ofanterior pituitary(red, blue and gray)

Pars nervosa / Posterior pituitary /Neurohypophysis

Infundibulum /

Pituitary stalk