BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 Week 2 Epithelial Tissue Answers 1 List some of the main characteristics of epithelial tissues The cells are closely apposed and adhere to each other by special junctions This type of tissue forms layers that act as barriers Have distinct surfaces apical free lateral and basal surfaces Have specialized projections microvilli stereocilia and cilia Are avascular and regenerative 2 Label this picture 3 Define what these structures are and name their function s Microvilli they are projections of cell membrane function to increase surface area and help with absorption Microvilli are supported by actin fibers Cilia are composed of microtubules function to move materials across the surface of the cell Stereocilia are long microtubules that function to absorb fluids found along the male reproductive tract and inner ear in the ear they function to help with hearing and balance in the male reproductive tract they help with absorption in the epididymis and ductus deferens BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 4 Label the picture 5 Epithelial tissues cover body surfaces line body cavities and constitute secretory glands Constitute means to form epithelial tissues help form the structure of secretory glands 6 True or False Exocrine glands AND endocrine glands contain ducts ONLY exocrine glands contain ducts 7 Name functions of the each Serous glands produce a watery secretion which is called serous fluid and it has a role in assisting digestion excretion and respiration contains a lot of proteins Mucous glands produce mucus Mixed exocrine glands secrete both protein and mucus Simple Squamous Simple Cuboidal Simple Columnar Stratified Cuboidal Stratified Columnar BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 8 Name the place s of the body where each type of epithelium is located Type of Epithelial Tissue Location body cavities such as the peritoneal cavity blood vessels the lungs glands ducts kidney tubules lines the stomach small intestine and large intestine Stratified Squamous Keratinized skin more specifically the palms of your hand and the soles of your feet Stratified Squamous Non Keratinized oral cavity esophagus tongue sweat gland duct pharynx salivary gland duct urethra Pseudostratified Ciliated Columnar respiratory passageways such as the trachea nasal cavity nasopharynx bronchi Transitional urinary bladder ureter 9 List some differences between endocrine glands and exocrine glands Exocrine Glands Contain ducts and produce many kinds of secretions UNICELLULAR structures goblet and mucous cells MULTICELLULAR structures sheet lining of stomach or mixed glands salivary glands Endocrine glands EX thyroid gland adrenal gland pituitary gland Do NOT have ducts and produce hormones BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 10 Name the function s of each type of epithelium Type of Epithelial Tissue Function reduce friction absorption secretion Simple Squamous Simple Cuboidal Simple Columnar Stratified Cuboidal Stratified Columnar absorption secretion provides limited protection absorption secretion protection Stratified Squamous Keratinized tolerates abrasion acts as a physical barrier provides more protection against abrasion due to having keratin Stratified Squamous Non Keratinized tolerates abrasion acts as a physical barrier absorption secretion secretion protection Pseudostratified Ciliated Columnar secretes mucus Transitional permits expansion and recoil after stretching Multiple Choice Answers 1 Which of the following is NOT a primary tissue type A Epithelial B Connective C Muscle D Neural or Nervous E None of the answers are correct BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 2 In epithelial tissues A cells that are damaged or lost at the surface cannot be replaced B cells obtain nutrients via blood vessels found in the tissues C extracellular fluid or fibers separate the individual cells D there is little or no intercellular space between the cells 3 Which feature s provides great strength and stability to epithelia A intercellular cement B cell adhesion molecules CAMs C cell junctions D physical interlocking E All of the answers are correct 4 Which of the following exclusively describes stratified epithelia A They consist of a single cell layer B They always have a free surface exposed to some inner chamber or passageway C They are avascular D They cover surfaces subjected to mechanical and chemical stress E None of the answers are correct 5 Which epithelial feature dominated by glycoproteins proteoglycans and a network of fine microfilaments functions in providing a barrier that restricts the movement of proteins and other large molecules from the underlying connective tissue A basolateral surface B apical surface C basal lamina D intercellular connections E reticular lamina 6 Which type of epithelium is found in portions of the respiratory tract and includes a mixture of cell types whose nuclei are situated at varying distances from the surface A pseudostratified columnar B simple cuboidal C stratified columnar D stratified cuboidal BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 7 Which type of epithelium is present where easy exchange of materials out of the blood is most important such as that in the lining of the heart and all blood vessels A stratified squamous B stratified columnar C simple cuboidal D endothelium E simple columnar 8 What type of epithelium makes up the endothelium of blood vessels A simple squamous B stratified cuboidal C transitional D simple columnar E pseudostratified columnar 9 Which of the following terms means two or more layers A pseudostratified B columnar C stratified D cuboidal E simple 10 Which type of epithelium lines the renal pelvis ureters and urinary bladder A cuboidal B columnar C transitional D squamous E glandular 11 The epithelium lining the small intestine is A stratified squamous B simple columnar C stratified columnar D simple squamous E None of the answers are correct BY 115 Human Anatomy SI Faith Leonard fkaylene uab edu 256 841 2663 12 Unicellular exocrine glands are A mixed exocrine glands B connected to a surface by ducts C also called goblet cells D arranged in a secretory sheet E None of the answers are correct 13 An epithelium always has an exposed surface which is referred to as the surface A basal B lateral C apical D intercellular E