Monika Kumar

 Study Guide for Tissues Tissue is a group of cells bearing common origin and function in coordination to perform specialized activities. Study of tissue is called histology and pathologist perform the studies. Types of Tissues Epithelial Connective Muscular Nervous *Covers body surface *Lines hollow organs, body cavities and ducts *Forms glands *Facilitates in interaction of body’s internal and external environments *Protects and supports organs. *Stores fat, play role in immunity, binds organs together *Comprise special cells, which play an important role in contraction and movement of the body and internal organs. *It also plays an important role in heat generation. *Responds to the internal and external stimulus through action potential or nerve impulses. *Brings muscular contraction or relaxation *Brings secretion of hormones, enzymes and glandular secretions Types A. Simple epithelial- *Simple squamous-Single layer, flattened, disc-like central nuclei, thin cytoplasm facilitates diffusion and filtration, e.g.kidney glomeruli, lining of blood vessels, heart, lymphatic vessels, air sacs of lungs *Simple Cuboidal- cube like, play role in secretion and absorption e.g. kidney tubules, small glands, ducts, ovary surface *Simple Columnar-play role in absorption and secretion, ciliated propels mucus in reproductive canal. Non-ciliated present in digestive tract *Pseudostratified- role in secretion e.g. non-ciliated type present in sperm-carrying duct. B. Stratified epithelial *Stratified squamous-subjected to abrasion Keratinized Non-keratinized *Stratified cuboidal *Transitional- lines ureter and urethra Types A. Proper CT-protects organs B. Fibrous CT *Fibroblasts *Leucocytes Macrophages Mast cells *Adipose CT- reserves food *Areolar CT *Reticular CT *Dense irregular fibrous *Dense regular fibrous C. Special CT *Cartilage Hyaline Fibrocartilage Elastic *Bone Compact bone Spongy *Blood C. Extracellular Matrix *Interstitial fluid *Collagen fibers *Elastic fibers *Reticular fibers Types *Skeletal/ Striated- for voluntary movement and locomotion. *Cardiac- contracts and propels all through the life, present in heart *Smooth/Non-striated- propels substance in internal passage. Present in the walls of hollow organs Neuron is the unit of nervous system. Types of Neurons- * Unipolar * Bipolar * Pseudounipolar * Multipolar References Study Guide for Human Anatomy. Retrieved from study guide5th edition.pdf (anatandmore.us)