Histology Full Unit

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The anatomical study of the microscopic structure of animal and plant tissue
Cells that line passageways (vessles, digestive system, air, etc...
Anchors epithelial tissue to the musculature... Think of the basement of a house, anchoring the house to the ground; last row of cells attach to this
Bind cells together; provide permeability barrier and communication; think of a kid building blocks, cells are like the blocks, they wouldn't get knocked over if they had been connected
Cell to cell connection; glycoproteins are like a natural, biological glue; filaments=protein wire
Cell to basement membrane cell connection
Hld cells together, act like a Zip Lock Bag - will not let out water; Consists of two parts Zonula Aderens and Zonula Occtudens
Runs the lenth of the cell; actin protein
Runs the lenth of the cell; HUGE thicc (not as thicc as you tho) fibers; at junction, actin tough filaments
Hold two parts, and allow molecules and ions through. Think of rivets
Lined with epithelial tissue; produce secretion
An aggregate of cells WITHOUT a duct; relies on bloodstream and release of hormones
Has a duct; a flask made of an aggregate of cells
Water producing sweat glands; take materials from blood vessels like salt and water.
Discharges fragments of the gland cells in the secretion
Shed entire cells; entire cell becomes part of secretion
They support and suspend
Background material; 3 parts: protein fibers, ground substance, and fluid; can be thin and watery or thick like cartilage (or your ass)
Thicker, rope like, strong, long protein, support watery environment; ligaments/tendons
Very fine, short, thin collogen, fibers; tendency to form an interlocking network; filler material; every basement membrane, organs (spleen, liver, kidneys)
Contain protein elastin; its own category of protein, suspension like rubber band, found in all basement membranes
 Do bulk of work: young, active, and create matrix ex: Fibroblasts
Put polish on; maintain the matrix mature cells ex: Fibrocytes
 The liquid, gelatinous or very dense substance that is the matrix minus fibers, blood vessels etc...
Interlock like a puzzle huge thin sheet. They transfer nutrients ex: lungs
As tall as they are wide. If most appear cuboidal it is cuboidal epithelial tissue
Taller than wide. Some have cilia. If cells are ciliated, must be columnar. Cilia sweeps away mucus.
Produce mucus. Only found in columnar cells, but not all columnar have mucus.
Only one layer
Two or more layers
One layer of cells, but it looks like many due to the different heights of the nuclei
Alter shape on circumstance; look half stratified, half cuboidal. Cytoplasm pushes up on the membrane
If empty, stratified cuboidal or columnar. If full stiatified squamous. Always look at the top 2-3 layers.
Epithelial, Connective, Muscular, Nervous
Protective Covering
Supportive and connecting structures, Provide barrier, Passage for substances, secretes substances
Flat, jigsaw pieces are blue, purple cytoplasm; blue nucleus. Their function is to diffuse, filter, secrete, and absorb. These are found in the lining of blood vessels, Alveoli, Lining of body cavities. Cells are enable molecules to be distributed rapidly, large surface area to volume ratio
Small cube-like shape (rarely perfect cube). The function is to diffuse molecules and transport secretions. They are found in the Kidney Tubules and Glands and gland ducts. ex: ring shaped formation around urine in the kidneys and around a developing egg in the ovaries
Elongated Nuclei, Blue cytoplasm, can have cilia and goblets. Found in the stomach, colon, and Fallopian tube
Top layer clearly stratified. Bottom layers undefined cells. The function is to PROTECT against abrasion. Found in the esophagus and the vagina
Top layer of cells- dead, lower layers are living. Their function is protection against abrasion. These are found in on the skin
Stratified cells with irregular shapes. Function is to accommodate fluctuations in volume of fluid. The can be found in the urinary bladder.
Little cellular definition, a single layer of cells but not all reach the free surface, contain cilia. Function is to synthesize and secrete mucus. Can be found in the nasal cavity, trachea, bronchi. NUCLEI LOOK STRATIFIED BUT AREN'T
Simple Columnar Epithelial Tissue. Dark Nuclei at edge, free surface passageway at center, big goblets therefore produces GOBS of mucus
Enclose and Separate, connecting tissues to one another, support and movement, storage, cushion and insulate
Ribbon-like cytoplasm, Large 'empty' space in the middle of the cell. Function is to insulate, store energy, and protect. Found throughout the body (Its fat dumbass)
Fibers run in the same direction, little matrix visible. Function is for strength, resists pulling forces, attaches structures. Found in Tendons and Ligaments
Fibers arranged in circle shape. Function is for lymph nodes structure, and support and strengthen the tissues. Found in lymph nodes, spleen and bone marrow
Cartilage cells (chondrocytes) surrounded by transparent collagen fibers, Chondrocytes surrounded by purple lacunae. Their function is to Rigid support with flexibility, foundation for bone formation, provide free movement between bones. Found in long bones, and articulating surface of bones
Found on ribs attach to the sternum by elastic cartilage. Pinkish and the back fuzzies are the elastic cartilage (bruh) ex) Ear
Found of the basement membrane of epididymus
Only found this tissue in the womb of the umbilical cord. Has Wharton's Jelly between fibers. Very fiberous
Lattice structure and pink. Function is to scaffold without adding weight. Found in the interior of flat bones and Ends of long bones
Concentric circles around a central canal, Bone cells surrounded by lacunae. Function is to strengthen and support. Found in the outer portion of flat bones, Shafts of long bones
Blood cells, fluid matrix. The function is to transport nutrients and remove waste. Found in the vessels