Basic Organization of Human Body and Tissue Types

Flashcards based on key concepts related to human body tissue organization, characteristics of various tissue types, and functions vital for understanding biology.

Epithelial Tissue

Tissue that covers and lines cavities and hollow organs.

Polarity

Characteristic of epithelial tissue that describes differing structures and functions between its two surfaces.

Basal Surface

The surface of epithelial tissue that is attached to underlying connective tissue.

Apical Surface

The surface of epithelial tissue that is not attached to surrounding tissue and is exposed to the body cavity.

Avascular

Lacking blood vessels; a characteristic of epithelial tissue.

Intracellular Junctions

Connections between cell membranes that help organize and distinguish tissue.

Simple Squamous Epithelium

A single layer of thin flat cells allowing easy passage of substances.

Transitional Epithelium

A type of epithelium found in organs that need to stretch or relax.

Fibroblast

The most common fixed cell in connective tissue that secretes fibers into the extracellular matrix.

Collagen Fibers

The body's main structural protein, known for its strength and found in ligaments and tendons.

Macrophages

Specialized white blood cells involved in phagocytosis to defend against infection.

Connective Tissue

The most abundant tissue type that supports and binds structures together.

Glandular Epithelium

A type of epithelium composed of cells that produce and secrete substances into ducts.

Stratified Squamous Epithelium

Tissue that has many layers of cells, with the outermost layer being flat.

Goblet Cells

Cells within epithelial tissue that secrete mucous to trap debris.

Cilia

Hair-like structures on the apical surface of cells that help move substances.

Desmosomes

Cellular rivets that hold cells together, providing strength.