Page 96 - Atlas of Histology with Functional Correlations

FIGURE 2.11 ■ Smooth endoplasmic reticulum. ×11,500.

FIGURE 2.12 | Golgi Apparatus

A high-magnification electron micrograph illustrates the components of the
Golgi apparatus (2). This apparatus consists of membrane-bound Golgi

cisternae (2) with numerous membranous Golgi vesicles (1) located near the
end of the cisternae. The Golgi apparatus (2) usually exhibits a crescent shape.
Its convex side is called the cis face (3), and the opposite, concave side is the

trans face (9) of the Golgi apparatus (2). This micrograph illustrates the Golgi
apparatus (2) in the seminiferous tubule of the testis, where a spermatid is
undergoing transformation into a sperm. At this stage of the transformation, the
Golgi apparatus (2) is packaging and condensing the secretory product into an
electron-dense acrosome granule (7). The acrosome granule (7) is located in the

acrosomal vesicle (8) that adheres to the nuclear envelope (6) at the anterior
pole of the spermatid. In the left corner of the micrograph, note a short cisterna
of the granular (rough) endoplasmic reticulum (4) and some free ribosomes

(5) in the cytoplasm (11) of the spermatid. A cell membrane (10) surrounds the
cell.

95