Main Menu » Organs & Systems » Cardiovascular » Vessels » Capillaries and Sinusoids » Capillaries and Sinusoids 10

Continuous capillary

This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x

Endothelial cell <p>This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x</p>

Endothelial cell

This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x

- Endothelial cell nucleus <p>This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x</p>

- Endothelial cell nucleus

This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x

- Basal lamina <p>This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x</p>

- Basal lamina

This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x

- Pinocytic vesicles <p>This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x</p>

- Pinocytic vesicles

This electron micrograph shows a high magnification view of the basal surface of an endothelial cell. In a continuous capillary, no pores are present in the endothelium, and macromolecules are transported in both directions through the endothelial cytoplasm via pinocytotic vesicles. This bidirectional process is called transcytosis. Some molecules are able to diffuse across the endothelium, such as small ions, amino acids and gases. The endothelium rests on a basal lamina that it has produced. 45,000x

Collagen fibrils > <p>The very fine collagen fibrils immediately beneath the basal lamina (blue arrows) comprise the reticular lamina of the basement membrane and are composed of Type III collagen. The larger collagen fibrils (red arrows) are composed of Type I collagen.</p>

Collagen fibrils >

The very fine collagen fibrils immediately beneath the basal lamina (blue arrows) comprise the reticular lamina of the basement membrane and are composed of Type III collagen. The larger collagen fibrils (red arrows) are composed of Type I collagen.

Main Slide Endothelial cell - Endothelial cell nucleus - Basal lamina - Pinocytic vesicles Collagen fibrils >