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54 Cards in this Set
- Front
- Back
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What are the 4 major types of tissues?
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Epithelial
Connective muscular Nervous |
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What is a tissue?
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A group of cells working together to perform a common function in the body
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What is the epithelial tissue?
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Also called epithelium, consists of tightly packed cells that form a continuous layer.
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What is the function of the epithelial tissue?
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It covers body surfaces and lines body cavities.
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How are cancers classified?
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By the type of tissue from which they arise.
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Which is the most common type of cancers of the epithelial tissue?
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Carcinomas
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What are some of the functions that the epithelial tissue has?
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Protective, and can be modified to carry out secretion, absorption, excretion,and filtration.
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On the external, epithelial tissue?
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Protects the body from injury, drying out, and possible invasion by microbes such as bacteria and viruses.
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On the internal the epithelial tissues?
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Secretes mucus along the digestive tract and sweeps impurities from the lungs by means of cilia.
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what joins the epithelium to the connective tissue?
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A basement membrane. Lower layer.
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How is the epithelial tissue classified?
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Based on shape of cells, and numbers of layers.
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What does simple means?
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One layer.
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What does stratified means?
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More than 1 layer. (multiple layers).
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What secretes substances?
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Glands.
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Glands are?
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Epithelial tissue.
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The pancreas is a gland that we call?
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Organ.
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what are the 2 types of glands?
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Exocrine and Endocrine.
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what type of gland secrete into a duct?
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Exocrine gland.
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What type of gland secrete into the bloodstream?
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Endocrine gland.
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What are the 3 types of Epithelial tissue?
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Squamous, Cuboidal, and columnar.
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What is the shape of the squamous epithelium?
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Flattened.
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What is the shape of the cuboidal epithelium?
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Cube shaped.
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What is the shape of the columnar epithelium?
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Rectangular pillars or columns.
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What is the function of simple squamous?
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Lining of lungs and blood vessels.
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what is the function of the stratified squamous?
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Protects, skin (epidermis) lining of nose, mouth, esophagus, anal canal and vagina.
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What is the function of simple cubodial?
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Lining of kidney tubules and various glands. absorbs molecules.
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What is the function of simple columnar?
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lining of small intestine, and oviducts. Absorbs nutrients.
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What is the function of the goblet cell?
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It secretes mucus.
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what is the functions of the Pseudo-stratified columnar?
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Lining of trachea, and sweeps impurities toward the throat.
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why is the junctions between cells important?
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Because the junction between cells helps the cell function as a tissue.
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What is a tight junction?
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An impermeable barrier.
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When does a gap junction forms?
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When 2 plasma membrane channels join. it lends strength but it allows ions, sugars and small molecules to pass.
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What is adhesion junction?
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Also called a desmosome. the adjacent plasma membrane does not touch.
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What is the connective tissue?
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Binds organs together, provides support and protection, fills spaces, produces blood cells and stores fat.
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What is the connective tissue separated by?
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A matrix consisting of non-cellular material that varies in consistency, from solid, jellylike to fluid.
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What are the 3 main types of non-fluid a matrix may have?
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White collagen fibers, Reticular fibers and yellow elastic fibers.
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What are loose fibrous?
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Supports epithelium and many internal organs. Example: Lungs, arteries and urinary bladder. by allowing the organs to expand.
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What are dense fibrous?
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Contains many collagen fibers. it has specialized function. Example: occurs in Tendons and Ligaments.
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What does loose fibrous and dense fibrous have in common?
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Both have cells called fibroblasts.
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What is the Adipose tissue?
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the body use adipose tissues to store fats. The body uses the stored fat for energy, insulation and organ protection. Found: beneath the skin, around the kidneys, and surface of the heart.
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What is the Reticular connective tissue?
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It forms the supporting mesh-work
of lymphoid tissue in lymph nodes, the spleen, thymus and the bone marrow. |
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What is cartilage?
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A specialized form of dense fibrous tissue.
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What allows bones to slide against each other and other joints?
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Cartilage.
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The cells in cartilage lies in small chambers called?
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Lacunae.
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What is the most common type of cartilage?
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Hylaine. it contains only very fine collagen fibers.
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Where does Hylaine occurs?
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Nose, walls of respiratory passages and at the ends of bones and ribs.
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What has more elastic fibers than Hylaine?
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Elastic cartilage.
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Where is elastic cartilage found?
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Frame work of outer ear.
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What does a fibrocartilage have?
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A matrix containing strong collagen fibers.
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Where is fibrocartilage found?
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Structures that withstand tension and pressure. Example: vertebrae in backbone and wedges of the knee joint.
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Which is the most rigid connective tissue?
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Bones
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What gives bone rigidity?
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Inorganic salts, and proteins fibers provides elasticity and strength.
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What makes up the shaft of a long bone?
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Compact bone
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Where does compact bone occurs?
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Bones of skeleton
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