What makes up a basement membrane? Be sure to name the two components of the bas

Question

What makes up a basement membrane? Be sure to name the two components of the basement membrane, along with what they are composed of, and what structure/s create the two components.

What is the purpose of a basement membrane?

Glands are comprised of what primary tissue type? Name the two main classes (types) of glands indicated in your notes, and for each, describe their characteristics.

What is the name for unicellular exocrine glands? Name any specific tissues we have discussed that often contain these cells.

Describe the structure of multicellular exocrine glands.

Explanation / Answer

The basement membrane is made of basal lamina and reticular lamina, and basal lamina consists of lamina densa and lamina lucida, the main components of basal lamina are collagen, the glyoproteins laminin and entacin and proteoglycans and reticular lamina is formed of reticular fibers, the purpose of basement membrane is to anchore down the epithelium to its connective tissue, and acts as mechanical barrier, --the glands are comprised of epithelial cells, the two main types of glands are exocrine and endocrine glands, all exocrine glands are glands with ducts,the secretions are delivered into ducts and up on the epithelial surface, the endocrine glands are without ducts, the secretion are released directly into the blood stream. --the unicellular exocrine glands consists of single cells specialized for secretion, they are goblet cells found in the epithelium of the trachea and the digestive tube. --structure of multicellular exocrine glan:the multicellular exocrine glands are composed of duct and a secretory unit the secretory unit is surrounded by connective tissue, the connective tissue supplies the secretory unit with blood vessels and nerve fibres, it also forms a fibrous capsule that extends into the gland and divides it into lobes.

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