Analysis of a glandular secretion indicates that it contains some DNA, RNA, and membrane components such as phospholipids. What kind of secretion is this and why?
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Analysis of a glandular secretion indicates that it contains some DNA, RNA, and membrane components such as phospholipids. What kind of secretion is this and why?
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- a) Give the importance of the hexose monophosphate shunt. b) Give the importance of its products? c) In which type of tissue and which part of the cell does it commonly occur?Epithelial sheets are classified by their number of cell layers and their cell shape. In the following table, draw simplified illustrations of the eight classifications. In each illustration, identify the cells, nuclei, and basement membrane. For the stratified epithelia, you only need to draw two or three cell layers, as shown in the stratified cuboidal epithelium example provided in the table. Simple squamous Stratified squamous Simple cuboidal Stratified cuboidal Simple columnar Stratified columnar Pseudostratified columnar TransitionalThe glandular secretions contain a large number of which different chemical substances?
- A sebaceous gland in our skin secretes oils to protect the skin. This is a holocrine gland. What is true about the sebaceous gland? All of the answers are correct O The sebaceous gland disintegrade when they release substances The cells in the sebaceous gland release oil by decapitation of the cell Sebaceous glands secrete substances via exocytosisa. Which class of extracellular matrix is not seen in the figure above? b. Which type of stress does the extracellular matrix in Question 1 help to resist? c. With the function of this extracellular matrix stated in Question 2, name two types of tissue where this extracellular matrix is abundantly foundWhy does holocrine secretion require continuous cell division?
- Describe unicellular and multicellular in glandular epithelium?The trans epithelial electrical resistance (TEER) is a characteristic property of an epithelium. Which of the following statements best describes the TEER? a.) A high trans epithelial electrical resistance (TEER) is an indicator of a leaky epithelium in which paracellular diffusion of solute is likely to be high b.) A high trans epithelial electrical resistance (TEER) is an indicator of a tight attachment between the epithelium and the basement membrane in which diffusion of solute across the basolateral surface is likely to be low c.) A high trans epithelial electrical resistance (TEER) is an indicator of a tight epithelium in which paracellular diffusion of solute is likely to be lowSecretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane. Because small pieces of membrane are continually added to the cell membrane, we would expect the cell membrane to become larger and larger as secretion continues. However, the cell membrane stays the same size. Explain how this happens.
- Regarding epithelial tissue, answer the following questions; (a) In general, which junctions are found in epithelial cells of the skin, where is their location on the cell and what is their function? (b) Describe how collagen fibrils attach to epithelial cells? Name any proteins that are involved?On a molecular/cellular level, why do you think that it is important for there to be a distinction between apical and basolateral domains of epithelial cells? Please clearly highlight the importance of the distinctions.n which type of secretion do cell products accumulate in the cytoplasm before the entire cell disintegrates? Multiple Choice Exocrine Holocrine Aprocrine Endocrine Autocrine