Life

Which of the following is composed of the basal lamina and the reticular lamina?

Which of the following is composed of the basal lamina and the reticular lamina?

the basement membrane
Structure. As seen with the electron microscope, the basement membrane is composed of two layers, the basal lamina and the reticular lamina. The underlying connective tissue attaches to the basal lamina with collagen VII anchoring fibrils and fibrillin microfibrils.

What is another name for basal lamina?

basement membrane
The terms “basal lamina” and “basement membrane” were often used interchangeably, until it was realised that all three layers seen with the electron microscope constituted the single layer seen with the light microscope.

What is reticular lamina made from?

the reticular lamina is produced by fibroblasts of the underlying connective tissue and contains fibrillar collagen.

Is basal lamina the same as reticular lamina?

While the fibrils of the reticular lamina are collagenous and embedded in an amorphous proteoglycan-rich ground substance, the basal lamina contains nonfibrillar collagen, noncollagenous glycoproteins, and proteoglycans.

What is reticular lamina?

Medical Definition of reticular lamina : a thin extracellular layer that sometimes lies below the basal lamina, is composed chiefly of collagenous fibers, and serves to anchor the basal lamina to underlying connective tissue.

What is the lamina rara?

the middle fibrous layer of the tympanic membrane. lamina ra´ra. 1. in the renal glomerulus and pulmonary alveolus, one of the layers of lamina lucida surrounding the lamina densa; the lamina rara externa is on the epithelial side and the lamina rara interna is on the endothelial side. 2.

What is basement membrane composed of?

The basement membrane (BM) is a fibrous matrix composed primarily of glycoproteins, type IV collagen, and laminin that are secreted by the epithelial cells (Ryerse, 1998).

What is basal lamina?

The basal lamina is a scaffold that anchors epithelial, muscle, and nerve cells. In epithelia, all the basal cells attach to the underlying basal lamina, which is, in turn, attached to the underlying connective tissue.

What is the basal lamina quizlet?

What is the basal lamina? A specialized extra cellular fibrous sheet that attaches epithelial cells to underlying connective tissue.

What’s the difference between basal lamina and basement membrane?

The basal lamina is composed of lamina densa and lamina lucida whereas the basement membrane is composed of lamina densa and lamina reticularis; hence, the basement membrane includes only a portion of basal lamina, and including a layer not found in basal lamina.

What’s the difference between basement membrane and basal lamina?

What is the basal and reticular lamina made of?

Excreted by those cells is the next layer, a thin layer of gel-like fluid called the basal lamina. Below that is the net-like reticular lamina, which is made up of fibers of dense connective tissue called collagen. These two lamina make up what’s called the basement membrane.

What is the meaning of reticular lamina?

Medical Definition of reticular lamina. : a thin extracellular layer that sometimes lies below the basal lamina, is composed chiefly of collagenous fibers, and serves to anchor the basal lamina to underlying connective tissue.

What is the basal lamina in the basement membrane?

This is known as the basal lamina. It’s like padding for the epithelium above. Directly beneath the basal lamina sits the reticular lamina portion of the basement membrane, which acts as a net of collagen fibers, a type of connective tissue that provides support and structure to the overall basement membrane layers.

What is the difference between basal lamina and dermis?

It’s like padding for the epithelium above. Directly beneath the basal lamina sits the reticular lamina portion of the basement membrane, which acts as a net of collagen fibers, a type of connective tissue that provides support and structure to the overall basement membrane layers. Just underneath the reticular lamina sits the dermis.