Essentials of Human Anatomy and Physiology Laboratory Manual: Tissue Classification Flashcards
Around Kidney and eyeball
Description: Matrix as in areolar, but very sparse; closely packed adipocytes, or fat cells, have nucleus pushed to the side by fat droplet
Areolar Connective Tissue
Widely distributed under epithelia of body(e.g., forms lamina propria of mucous membranes); packages organs; surrounds capillaries
Description: Gel-like matrix with all three fiber types; cells include fibroblasts (fiber-forming cells), phagocytes, some white blood cells, and others
Hard, calcified matrix containing many collagen fibers; osteocytes lie in lacunae. Very well vascularized
Walls of the heart
Description: Branching, striated, generally uninucleate cells that interdigitate at specialized junctions (intercalated discs)
Description: Primarily parallel collagen fibers; a few elastin fibers; major cell type in the fibroblast
Location: Intervertebral discs; pubic symphisis; discs of knee joint.
Description: Matrix similar but less firm than in hyaline cartilage; thick collagen fivers predominate
Brain, spinal cord, and nerves
Description: Neurons are branching cells; cell processes that may be quite long extend from the nucleus-containing cell body; non-irritable supporting cells also contribute to nervous tissue
Pseudostratified columnar epithelium
Nonciliated type in ducts of large glands,
parts of male urethra;
ciliated variety lines the trachea,
most of the upper respiratory tract.
Description: Single layer of cells of differing heights, some not reaching the free surface; nuclei seen at different levels; may contain goblet cells and bear cilia.
Reticular connective tissue
Lymphoid organs(lymph nodes, bone marrow, and spleen)
Description: Network of reticular fibers in a typical loose ground substance: reticular cells predominate.
Simple Columnar Epithelium
Nonciliated type lines most of the digestive tract (stomach to anal canal) and gallbladder;
Ciliated variety lines small bronchi and uterine tubes
Description: Single layer of tall cells with oval nuclei; some cells bear cilia; layer may contain mucus-secreting goblet cells.
Simple cuboidal epithelium
ducts of small glands;
Description: Single layer of cube-like cells with large, spherical central nuclei.
Simple squamous epithelium
air sacs of lungs;
lining of heart and blood vessels;
lining of ventral body cavity (serosae)
Description: Single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of epithelia.
In Skeletal muscle attached to bones or occasionally to skin
Description: Long, cylindrical, multinucleate cells; obvious striations.
Mostly in the walls of hollow organs.
Description: Spindle-shaped cells with central nuclei; cells arranged closely to form sheets; no striations.
Stratified squamous epithelium
Nonkeratinized type forms the moist lining of the esophagus, mouth, and vagina;
Keratinized variety forms the epidermis of the skin, a dry membrane.
Lines the ureters, bladder, and part of the urethra
Description: Basal cells cuboidal or columnar; surface cells dome-shaped or squamouslike, depending on how much the organ is stretched.