The Tissue Level of Organization

A collection of flashcards covering key concepts and definitions from Chapter 4 on the Tissue Level of Organization.

What are the four main types of tissues in the body?

Epithelial, Connective, Muscular, Nervous

What is the primary function of epithelial tissue?

To cover surfaces and line cavities.

What holds cells together in tissues?

Cell junctions.

What are the two main origins of tissues during embryonic development?

Ectoderm and Mesoderm.

What is a gland?

A single cell or mass of epithelial cells adapted for secretion.

What are the three types of muscle tissue?

Skeletal, Cardiac, Smooth.

What defines connective tissue?

It consists of cells and extracellular matrix.

What is the functional classification of exocrine glands?

Merocrine, Apocrine, Holocrine.

Which type of connective tissue is the most abundant in the body?

Areolar connective tissue.

Which cartilage is the most abundant and provides support at joints?

Hyaline cartilage.

What is fibrosis?

The formation of scar tissue.

How does aging affect tissue repair?

Aging slows the process of tissue repair.

What do adipocytes specialize in storing?

Fat.

What is the role of neurons?

To carry sensory and motor information and perform integrative functions.

What do macrophages do?

They destroy bacteria and cell debris by phagocytosis.

What is the ground substance in connective tissue composed of?

Water and organic molecules.

What processes affect the repair of epithelial cells?

Division of stem cells or undifferentiated cells.