Animal Tissues PDF

Categories of Tissues r Animal Tissues. Jenna Hellack Jan  Categories of Tissues Categories of Tiss...

Categories of Tissues r Animal Tissues. Jenna Hellack Jan  Categories of Tissues Categories of Tissues Epithelium Connective Muscle Nervous Jenna Hellack Jan  Categories of Tissues Epithelium Lines, covers, and protects other tissues and organs. Characterized by: Cells tightly junked together The presence of a cell secretion called the basement membrane. Named by: Cell shape Other characteristics of the cells. Squamous, Cuboidal, and Columnar Jenna Hellack Jan  Categories of Tissues Squamous Epithelium Cells very thin, much wider than they are thick. Simple Squamous Epithelium Air sacs of respiratory Lining of blood vessels, heart and lymphatic tubes Stratified Squamous Epithelium Skin Vagina Esophagus Mouth Jenna Hellack Jan  Categories of Tissues Examples of Simple Squamous Epithelium Jenna Hellack Jan  Categories of Tissues Stratified Squamous Epithelium Jenna Hellack Jan  Categories of Tissues Cuboidal Epithelium Cells cube shaped- secretion and absorption. Kidney tubules Duct and small glands Surface of ovary Jenna Hellack Jan  Categories of Tissues Columnar Epithelium Elongated cells, much longer than they are wide. Simple Columnar Epithelium A single layer of cells that line the digestive tract, gallbladder and excretory ducts of some glands. Has microvilli at surface for absorption. Pseudostratified ciliated columnar epithelium Lines the bronchi, trachea, uterine tubes and some of the uterus. Propels mucus or reproductive cells by ciliary action. Jenna Hellack Jan  Categories of Tissues Simple Columnar epithelium Jenna Hellack Jan  Categories of Tissues Pseudostratified Ciliated Columnar Epithelium Jenna Hellack Jan  Categories of Tissues Connective Tissue Characterized by the cells widely separated from each other in a matrix that is produced by the cells. Tissue protects and supports. Cell Matrix composed of two regions Ground Liquid (sol), Gel, Gum or solid Fibers Non-elastic (= white or Collagen) Elastic (= yellow fibers) Types of Connective tissue Jenna Hellack Jan  Categories of Tissues Types of Connective Tissue Loose (Areolar) Connective Tissue Dense Connective Tissue Adipose Cartilage Bone Blood Jenna Hellack Jan  Categories of Tissues Loose Connective Tissue (Areolar) Gel like ground with both elastic and non- elastic fibers running though the ground in many directions. Wraps and cushions organs Under the skin Jenna Hellack Jan  Categories of Tissues Dense Regular Connective Tissue Nuclei and fibers arranged in parallel rows. Tendons and ligaments Fibers mostly non-elastic Jenna Hellack Jan  Categories of Tissues Adipose (Fat) Function as storage cells for adipose (lipids) Adipose cells contain a large vacuole which in the live cell contains lipids. Cell nucleus and cytoplasm are pushed out to edge of cell membrane. Jenna Hellack Jan  Categories of Tissues Cartilage Ground of matrix is gum like. Cells are found in Lacunae within the matrix. Fibers may be elastic or non-elastic, or a form of non-elastic called reticular(where the non-elastic fibers of very thin) Hyaline Cartilage-example on the ends of bones Elastic Cartilage- example ear cartilage Non-elastic Cartilage- example nose cartilage. Jenna Hellack Jan  Categories of Tissues Hyaline cartilage Jenna Hellack Jan  Categories of Tissues Elastic Cartilage Jenna Hellack Jan  Bone Categories of Tissues Ground of matrix is Solid (Calcium carbonate). Has blood supply and nerves running through the Haversian canal systems. Jenna Hellack Jan  Categories of Tissues Vascular Tissue (Blood) Liquid matrix = plasma 90% water 10%Plasma proteins, electrolytes, hormones, oxygen, glucose etc. Formed elements Erythrocytes -48billion(female) to 54 billion (male) cell / ml of blood in humans. Mammals are enucleated while rest of the vertebrates they have nuclei Leukocytes -about 7.5 million / ml of blood Platelets -blood clotting Jenna Hellack Jan  Blood Categories of Tissues Jenna Hellack Jan Categories of Tissues Categories of Tissues  Categories of Tissues Muscle Tissue Tissue with cells having fibers specialized for contraction. Skeletal Muscle (Striated, voluntary) Parallel elongated cells (fibers) multinucleated and each cell is the length of the muscle. Light meat, Dark meat—Slow twitch, fast twitch muscle Smooth Muscle (Visceral, involuntary) Cells are long and tapered. Organized into sheets of muscle. Cardiac Muscle Intercalated disc Myogenic branched Jenna Hellack Jan  Categories of Tissues Skeletal Muscle Jenna Hellack Jan  Categories of Tissues Smooth Muscle Jenna Hellack Jan  Cardiac Muscle Categories of Tissues Jenna Hellack Jan  Categories of Tissues Nervous Tissue Cells specialized to polarize and depolarize. Cell is a neuron Jenna Hellack Jan  Categories of Tissues Nervous Tissue Neuron (nerve cell): Cell body, dendrite, axon. Glial cells support the neuron