Concept explainers
To sketch: A diagram of columnar epithelial cells with labeled apical and basolateral borders of the cells.
Introduction: Epithelial cells form the outer covering of all the parts of the body. Arrangement of these cells forms epithelial tissues. These tissues have been divided into various types of the basis of their structure and functions.
To determine: A brief explanation about various types of junctions present on the columnar epithelial cells.
Introduction: On the basis of structure, the epithelial tissues which have columnar cells are known as columnar epithelial tissues. The cells of these tissues are called columnar epithelial cells. Various cell junctions are present in these cells important for structural and functional support to the cell.
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Human Physiology: An Integrated Approach (8th Edition)
- all the following statements which relate to apical surface modifications(brush border) of epithelial cells are true except. * these are anchored in a dense mat of microfilaments in the apical cytoplasm called the terminal, lateral web. The apical surface of cells in intestine is usually covered with microvilli. the microfilaments can contract, By interacting with cytoplasmic myosin, then caused the shortening of the microvilli. cores of microvilli are composed of parallel actin microfilaments.arrow_forwardName the different cell junctions found in tissues.arrow_forwardMake an illustration/representation that will show how cell membrane carry out function of Selectively Permeable. Explain the function too. Please make the illustration/representation readable and please add labels.arrow_forward
- Compare tight junctions, desmosomes, and gap junctions. First, give an example of a tissue where each is found.arrow_forwardEpidermolysis bullosa results from mutations in keratin genes and leads to severe blistering of the skin. Which type of cell junction would you expect to be disrupted in this disorder? tight junctions gap junctions adherens junctions desmosomes focal adhesionsarrow_forwardEpithelial Tissue: Cell-Cell junctions: Which cell-cell junction attaches to the basal lamina? a) tight b) gap c) hemidesmosome d) desmosome Pick two (2) of your favorite cell-cell junctions, and draw and label them in the space below: Epithelial Tissue: Other shapes and cell types: Match the type of epithelial tissue with where it's found in the body: stratified squamous kidney ducts transitional stratified cuboidal Text Predictions: On Epithelial Tissue: Secretion Types: Match the secretion type with its mechanism: Merocrine Apocrine Holocrine skin urinary bladder entire cell becomes secretion exocytosis apical part of cell pinches off Draw your favorite secretion type in the space below: Focusarrow_forward
- List and describe the 4 types of tissue membranes:arrow_forwardEpithelial cells that have apical and basolateral surfaces, have three options [depends on the celltype] for making their membranes unique. Explain the path options.arrow_forwardLabel A, B and E as the following: -Stratified squamous epithelial -Nuclei of epithelial cells -Basement membranearrow_forward
- Identify the membranous organelles and list their functions.arrow_forwardA)Identify the structure the arrow points to. B)Give one region where you would find this structure. KUN Histology slide with arrow pointing to a structure seen between a gland and connective tissue. 1) adipose tissue; around organs 2) sebaceous gland; dermis of skin 3) dense irregular connective tissue ; walls of elastic arteries 4) Arrector pilorum muscle ; dermis of skinarrow_forwardHow do cellular junctions contribute to the overall function of epithelial tissue? Describe at least two type(s) of cell junctions found in epithelium (ie. location, structure, function).arrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning