Share This Link

extensive extracellular matrix: This is characteristic of connective tissue, not epithelial tissue. Epithelial tissue has very little extracellular matrix.

a rich blood supply: Epithelial tissues are avascular, meaning they lack a direct blood supply. They receive nutrients via diffusion from underlying connective tissue.

presence of lacunae: Lacunae are small spaces that contain cells in cartilage or bone tissue, not epithelial tissue.

hemidesmosomes: These anchor epithelial cells to the basement membrane, not for communication.

desmosomes: Desmosomes are responsible for mechanical adhesion between cells, providing strength but not facilitating communication.

tight junctions: These seal adjacent cells together to prevent leakage of substances between them, rather than enabling communication.

collagen fibers: These are strong protein fibers found in the extracellular matrix and provide tensile strength.

reticular fibers: These are thin, branching fibers composed of collagen and form supportive networks in soft tissues like the spleen and lymph nodes.

elastic fibers: Composed of elastin, these fibers provide elasticity to tissues such as skin and blood vessels.

transitional epithelium - specialized for stretch: This is correctly matched. Transitional epithelium lines the urinary bladder and stretches to accommodate urine volume changes.

simple cuboidal - found in kidneys, glands, liver: Correctly matched. Simple cuboidal epithelium is commonly found in these organs and is involved in secretion and absorption.

keratinized stratified squamous - epidermis of skin: Correctly matched. This type of epithelium forms the outer layer of skin and provides protection against abrasion and water loss.

apocrine: Apocrine glands release part of their cytoplasm with the secretion, which can include membrane-bound substances like phospholipids.

sebaceous: Sebaceous glands are holocrine glands that release the entire cell contents, including membrane lipids such as phospholipids.

holocrine: These glands release whole cells that disintegrate, leading to secretions rich in lipids, including phospholipids.

hyaline cartilage: Hyaline cartilage contains fine collagen fibers, but not densely packed ones. It is more glassy and smooth, found in the nose, trachea, and at joint surfaces.

areolar cartilage: This is not a valid type of cartilage. “Areolar” refers to loose connective tissue, not cartilage.

elastic cartilage: Elastic cartilage contains more elastic fibers than collagen, allowing flexibility. It is found in the ear and epiglottis.

synovial: Synovial membranes line joint cavities and produce synovial fluid, not found in the respiratory tract.

serous: Serous membranes line body cavities that do not open to the exterior (e.g., pleura, pericardium, peritoneum) and secrete a watery fluid, not mucus.

peritoneal: The peritoneal membrane is a type of serous membrane lining the abdominal cavity, not the respiratory tract.

stable; epithelium: Epithelium consists of labile cells, not stable ones. These cells divide frequently even without injury.

permanent; nervous: Nervous tissue is considered permanent, and neurons generally do not regenerate or undergo mitosis even after injury.

permanent; liver: In The liver is capable of regeneration and therefore has stable, not permanent, cells.

reticular fibers + collagen fibers: These are structural protein fibers in connective tissue but are not components of proteoglycan aggregates.

chondroblasts and chondroclasts: These are cartilage cells involved in formation (chondroblasts) and resorption (chondroclasts) but not part of the ground substance's molecular structure.

collagen fibers + fibroblasts: Collagen fibers are structural; fibroblasts produce extracellular matrix components, but neither directly forms the proteoglycan aggregate.

white blood cells to leave blood vessels at site of injury; redness: While WBCs do exit blood vessels during inflammation (diapedesis), redness is more directly caused by increased blood flow, not by WBC migration.

white blood cells and nutrients to get to site of injury quicker; swelling: Vasodilation leads to increased blood flow (causing redness), while swelling (tumor) is more due to increased vascular permeability and fluid leakage.

white blood cells to leave blood vessels at site of injury; edema: This describes part of the inflammatory process correctly (WBC extravasation and edema), but vasodilation itself mainly leads to increased blood flow and redness, not edema.