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CHAPTER 13 - ENDOCRINE GLANDS
Histology Guide
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MICROGRAPH

NAME
EM 377 Zona Reticularis
TISSUE
Adrenal Cortex
IMAGE SIZE
11,571 x 8,988 pixels
382 MB
FILE SIZES
48,237 KB (grayscale)
57,051 (color)
MAGNIFICATION
48,300x
PIXEL SIZE
0.216 nm
SOURCE
John A. Lang
Department of Anatomy
School of Medicine
University of California
San Francisco, CA

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EM 377 Zona Reticularis

Zona Reticularis

Transmission electron microscopy (TEM) of a cell in the zona reticularis of the adrenal cortex.

The zona reticularis is the innermost layer of the adrenal cortex. These cells primarily produce androgens (steroid sex hormones), which the gonads convert into more active forms.

  • Nucleus (blue)/Nuclear Envelope (purple)
  • Mitochondria (red) - many elliptical or elongated mitochondria with tubular cristae (tan)
  • Lysosomes (black) - surrounded by a membrane (unlike lipid droplets)
  • Smooth Endoplasmic Reticulum (SER) - small, anastomosing tubular elements and vesicles surrounding mitochondria and lipid droplets.
  • Cytoplasm (green)

Courtesy of John A. Lang, Department of Anatomy, School of Medicine, University of California, San Francisco, CA.

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