BIO 240 1st Edition Lecture 4 Outline of Last Lecture I Epithelial Tissue A Types B Functions C Characteristics Outline of Current Lecture D Locations E Glands F Ways to classify II Tissue Growth and Development A Growth Current Lecture I Epithelial Tissue A Types Last lecture B Functions Last lecture C Characteristics Last lecture D Locations i Simple Squamous 1 Bowman s capsule Structure that filters blood in the kidney 2 Capillaries The smallest blood vessel in the body they connect arteries to veins 3 Alveoli Small air sacs of the lungs are the site of gas exchange 4 Pericardium Sac around the heart ii Simple Cuboidal 1 Kidney tubule 2 Small ducts 3 Small glands iii Simple Columnar 1 Throughout the digestive tract 2 Some large ducts 3 Uterus the endometrium iv Ciliated pseudostratified columnar These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute 1 Upper respiratory tract a Nasal cavity b Pharynx c Trachea d Bronchi v Stratified Squamous keratinized 1 Skin 2 Dorsum of tongue 3 Vagina vi Stratified squamous nonkeritinized 1 Oral cavity 2 Pharynx 3 Esophagus 4 Anal lining vii Stratified cuboidal and columnar 1 Large ducts and glands 2 Very rare viii Transitional 1 Urinary bladder 2 Ureters E Glands one or more cells that make and secrete a product i Endocrine Produce hormones and secrete into the bloodstream by exocytosis These don t use ducts ii Exocrine Secrete their products onto body surfaces skin or into body cavities F Ways to classify i The number of cells that the gland is made up of 1 Unicellular Made up of one cell Ex Goblet cells mucus glands 2 Multicellular Made up of two or more cells Ex Oil glands salivary sweat ii Shape of the gland 1 Simple Contains a single unbranched duct 2 Compound Has at least one branched duct 3 Tubular Duct gland all looks like one tube 4 Acinar alveolus Narrower duct connected to a rounder gland iii What type of products they make 1 Serous water like secretions 2 Mucous Made by the combination of mucin glycoproteins which make it sticky and water 3 Cytogenic A whole cell is secreted testes release sperm ovaries release eggs iv Ways the products are secreted 1 Merocrine eccrine Tears saliva sweat pancreas 2 Apocrine exocrine A portion of the cell is secreted by budding mammary glands 3 Holocrine when cell accumulate products and then the whole cell disintegrates The whole contents of the cell will be released Oil cells II Tissue Growth and Development A Growth i Hyperplasia Growth by cell multiplication i e mitosis This accounts for most of childhood growth ii Hypertrophy Enlargement of existing cells i e skeletal muscle cells and adipose cells iii Neoplasia Abnormal growth of nonfunctioning tissue causing a tumor iv Atophy The shrinking of tissue through lack of use or aging v Necrosis Tissue death due to trauma toxins or infection
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