Page 406 - Atlas of Histology with Functional Correlations

FIGURE 10.5 | Capillaries Sectioned in

Transverse and Longitudinal Planes in Mesentery

of Small Intestine

This high-magnification photomicrograph of the mesentery connective tissue
shows the capillaries (1, 3, 4, 5) sectioned in both transverse (1, 5) and
longitudinal planes (3, 4). The lumen of the capillaries (1, 3, 4, 5) is about the
size of an RBC. In the transverse plane (1, 5), the RBCs fill the lumina of the
capillaries (1, 5), and in the longitudinal plane (3, 4), the RBCs are lined up in a

row. Surrounding the capillaries (1, 3, 4, 5) are the adipose cells (2) of the
intestinal mesentery, which appear empty because of the chemicals used for the
preparation of this slide. Blue-staining collagen fibers of the connective tissue

(6) surround the adipose cells (2) and the capillaries (1, 3, 4, 5).

FIGURE 10.5 ■ Capillaries sectioned in transverse and longitudinal planes in

the mesentery of a small intestine. Stain: Mallory-Azan. ×205.

FIGURE 10.6 | Ultrastructure of Continuous

Capillary Sectioned in Transverse Plane

This ultrastructure micrograph shows a capillary in the CNS, sectioned in a
transverse plane. A layer of continuous endothelium of the capillary (6)
surrounds the capillary lumen. Also visible on the left side of the capillary are

the nucleus of the endothelial cell (3) and a section of a pericyte process (5)
closely attached to the capillary wall. The capillary endothelium (6), the nucleus

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