Untitled Quiz

A tissue type composed of closely aggregated polyhedral cells that cover and line body surfaces and cavities, performing functions like absorption, secretion, and protection.

Epithelial cells are typically polyhedral (many sides), arranged tightly together.

Epithelial tissues are responsible for covering, lining, protection, absorption, and secretion in the body.

Proteins and organelles in epithelial cells are distributed unevenly, reflecting different functions at different cell surfaces.

A thin layer of extracellular matrix that holds epithelial cells together and provides structural support.

The cells in an organ that perform its specialized function.

The supportive connective tissue in an organ, holding the parenchyma together.

The four fundamental types of tissue: epithelial, connective, muscle, and nervous.

The non-cellular component of tissues, providing structural support and influencing cell function.

The region of a cell contacting the extracellular matrix (ECM) and connective tissue.

The end of a cell that usually faces a space, often different in structure and function to the basal pole.

The regions of cuboidal or columnar cells that touch neighboring cells.

A thin extracellular structure beneath the epithelium that acts as a semi-permeable filter.

The thin, electron-dense sheet-like layer of fine fibrils in the basement membrane, nearest the epithelial cells.

The more diffuse and fibrous layer beneath the basal lamina in the basement membrane.

A component of the basal lamina that forms a mesh-like network.

A glycoprotein in the basal lamina that attaches to integrin proteins and interacts with type IV collagen.

Components in the basal lamina that cross-link laminin to type IV collagen and influence structure and filtering properties.

A component of the reticular lamina, a part of the basement membrane.

A component of the reticular lamina that anchors it to the basal lamina via anchoring fibrils.

Basement membrane acts as a structural support for epithelial cells, attaching them to connective tissues.

Basement membrane proteins organize cell proteins in the cell membrane and help cells maintain their structure, direction, and pathways.

Basement membrane proteins guide and support cell-to-cell interactions within and around epithelia.

Basement membrane proteins provide a scaffold for tissue repair and growth.

Tight junctions, also known as zonula occludens, seal epithelial cells together, preventing the passage of substances between cells.

Adherent junctions are areas where cells are firmly attached to each other and/or basal lamina.

Gap junctions act as channels connecting cells, allowing communication.

Another name for tight junctions in epithelia; belt-like structures around cells.

Proteins that form tight junctions and enable paracellular movement of water.

Transmembrane protein involved in the tight junction formation and function.

Proteins that link tight junction proteins and actin filaments to maintain spatial organization and function.

Proteins that contribute to tight junction formation and cell adhesion.

Proteins that help form tight junctions and anchor cells to the cytoskeleton.

A belt-like structure that seals the space between cells, preventing leakage.

Bacteria like Clostridium perfringes can disrupt tight junctions causing fluid loss and cell death.

A band of proteins that firmly anchors cells together.

Cell adhesion depends on proteins called cadherins, which link neighboring cells together.

A spot-like junction that provides strong mechanical strength between cells.

Similar to adherens junctions but does not encircle the entire cell.