Introduction to Tissues and the Extracellular Matrix

These flashcards cover key concepts about tissue types, the extracellular matrix, and their functions, which are essential for understanding basic biological structure and functions.

What is the function of the extracellular matrix in tissues?

It is the extracellular material that tissue cells are embedded in, providing structure and support.

What are the four principal types of connective tissue?

Epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

What are the types of muscle tissue?

Skeletal muscle, cardiac muscle, and smooth muscle.

What is the primary function of epithelial tissue?

To cover and protect the body and line cavities and organs.

What distinguishes connective tissue from epithelial tissue?

Connective tissue supports and holds structures together, with cells relatively far apart and a larger matrix.

What is collagen and its significance in connective tissue?

Collagen is the most abundant protein in the body, providing strength and support in tissues like tendons and ligaments.

What is the role of glycoproteins in the extracellular matrix?

They unite cells through connectors and provide communication between the extracellular matrix and the cell.

What is the difference between muscle tissue and nervous tissue in terms of healing capacity?

Muscle tissue has some ability to repair itself while nervous tissue has a very limited capacity to heal.

What are the two major types of membranes in the body?

Epithelial membranes and connective tissue membranes.

What is the function of synovial membranes?

They line the spaces between bones and joints, secreting synovial fluid for lubrication and cushioning.

What is keloid scarring?

Keloid scarring is an extreme form of scarring where tissue grows beyond normal boundaries, becoming raised and sometimes affecting movement.