Histology

• Anatomy


  Scientific discipline that investigates the body's structure and its relationship
• Cytology


  Microscopic examination of cells obtained from the body (as by aspiration or scraping) for diagnostic purposes
• Histology


  Study of microanatomy of cells, tissues, and organs as seen through a microscope. It examines correlation between structures and functions
• Histotechniques


  Techniques for processing the tissues, whether biopsies, larger specimens removed by surgery or tissues from autopsy
• Histotechnologist


  A person who does the tissue processing and makes the glass microscopic slides
• Pathology


  Study of structural, biochemical and functional changes in cells, tissues and organs that underlie disease
• Physiology


  Scientific investigation of the normal process or functions of living things
• Basophilic


  Base-loving; a structure that stains with basic dye like hematoxylin
• Acidophilic


  Acid-loving; a structure that stains with acidic dye like eosin
• Perimysium


  Connective tissue sheath that surrounds a group of muscle fibers to form a bundle known as fascicle
• Perineurium


  Connective tissue sheath that surrounds a group of nerve fibers to form a bundle known as fascicle
• Perichondrium


  Connective tissue sheath that may cover certain types of cartilage
• Endomysium


  Connective tissue sheath that surrounds an individual muscle fiber
• Endoneurium


  Connective tissue sheath that surrounds an individual nerve fiber
• Endosteum


  Layer of connective tissue that covers bone facing the marrow cavity, and trabeculae of bone within the marrow cavity
• Epithelium


  Tissue composed of cells that cover body surfaces and line hollow structures or cavities referred to as the innermost layer
• Epidermis


  Uppermost layer of the skin that lies upon the dermis
• Epimysium


  Dense connective tissue sheath surrounding a collection of fascicles that comprise the entire muscle
• Epineurium


  Dense connective tissue sheath surrounding a collection of fascicles that comprise an entire nerve
• Extracellular matrix (ECM)


  Matrix of components secreted by cells that reside in the intervening spaces between cells
• Intramembranous ossification


  Form of osteogenesis where bone is formed within mesenchyme
• Interstitial


  Growth within a matrix. Chondrocytes within a cartilage matrix divides producing new cells and matrix to allow for growth
• Interstitial lamellae


  Remnants of concentric lamellae formed during bone remodeling and found between osteons
• Fibroblast


  Principal cell of connective tissue responsible for the synthesis of collagen, reticular and elastic fibers as well as other components of ground substance
• Leukocyte


  White blood cell
• Stratified


  An epithelium composed of many layers of cells
• Pseudostratified


  An epithelium that appears to be composed of many layers but is in fact, not
• Lamina


  Term used to describe structures that exhibit a plate-like appearance or layers
• Lamella


  Diminutive of lamina and is also used to refer to a layer. In mature bone, the arrangement of collagen fibers and other bone components are described as lamella
• Tunica


  Refers to a layer of tissue ensheathing a structure
• Zona


  Histologically, the term zona refers to the zone or belt. Usually used for adrenal glands, wherein the cortex being subdivided into 3 zones: zona glomerulosa, zona fasciculata, and zona reticularis
• Osteoblast


  Osteoprogenitor cells that differentiate into osteoblasts. These cells retain the ability to divide and are able to secrete osteoid
• Osteocyte


  Principal cell types of bone involved in maintenance of the bone matrix
• Osteoclast


  Cells derived from the mononuclear phagocytic system that are responsible for remodeling bone
• Osteogenesis


  Process by which bone forms
• Chondroblast


  Cells responsible for laying down cartilage during chondrogenesis
• Chondrocyte


  Principal type of bone involved in maintenance of the cartilage matrix
• Chondroclast


  Cells derived from the mononuclear phagocytic system that are responsible for remodeling cartilage
• Chondrogenesis


  Process by which cartilage forms
• Spicule


  A small sharp process often encountered in descriptions of spongy bone and in the process of osteogenesis where osteoid is laid down in spicules, which then coalesce to form larger structures known as trabeculae