Concept explainers
Transitional epithelium is found is
- a. the urinary system.
- b. the respiratory system.
- c. the
digestive system . - d. the reproductive system.
- e. all of the above.
Introduction:
Epithelial cells are sheet of adhering cells that cover the body surfaces and cavities in the form of internal and external linings of body organs and tissues of glands. The main functions of the epithelial cells are protection, secretion, absorption, excretion, sensation, and filtration. Epithelia consist of three classes: simple (one layer of cells), pseudostratified, and stratified (consists of 2 to 20 layers of cells).
Answer to Problem 1TYR
Correct answer:
Transitional epithelium acts as a leak proof membrane in the urinary tract. Therefore, option a is correct.
Explanation of Solution
Justify reasons for the correct statement:
Transitional epithelia are layer of cells present in the mucosal lining of the urethra. The function of this cell is to permit the distension of the urinary organ by contained urine and it also ensures the leak proof mechanism of the urinary tract.
Option (a) is given as “the urinary system”.
Transitional epithelia are present in the urinary tract and permits the distension of urinary organ.
Hence, option (a) is correct.
Justify reasons for the incorrect statements:
Option (b) is given as “the respiratory system”.
The respiratory system contains the lining of pseudostratified columnar epithelia, which are ciliated and mucus-secreting goblet cells. Hence, it is a wrong answer.
Option (c) is given as “the digestive system”.
The intestinal and gut regions are lined by simple columnar epithelium cells, which involves in the absorption and secretion processes. Hence, it is a wrong answer.
Option (d) is given as “the reproductive system”.
The reproductive system is lined with stratified columnar epithelial cells, which functions in protection and secretion processes. Hence, it is a wrong answer.
Option (e) is given as “all the above”.
Transitional epithelial cells are present in the urinary organs including bladder, urethra, and ureters. Hence, it is a wrong answer.
Hence, options (b), (c), (d), and (e) are incorrect.
In conclusion, transitional epithelia are present in the urinary tracts, which permits the urinary organ to expand and stretch.
Want to see more full solutions like this?
Chapter 5 Solutions
Anatomy and Physiology
Additional Science Textbook Solutions
Biology: Life on Earth
Human Physiology
Brock Biology of Microorganisms (15th Edition)
Biology: Life on Earth with Physiology (11th Edition)
Microbiology with Diseases by Body System (5th Edition)
- Stratified epithelium is usually found in areas of the body where theprincipal activity isa. filtration. c. absorption. e. secretion.b. protection. d. diffusion.arrow_forwardWhich of the following is not a function of an epithelium?a. It is selectively permeable.b. It serves as a packing and binding material.c. The cells can produce secretory products.d. It is designed for physical protection.arrow_forwardThe linings of the digestive, respiratory, excretory, and reproductivepassages are composed ofa. serous membranes.b. mucous membranes.c. mesothelium.d. synovial membranes.e. endotheliumarrow_forward
- An example of connective tissue isa. nerve cells in your fingers.b. skin cells.c. brain cells.d. red blood cells.arrow_forwardIn which of the following organs are fenestrated endothelial cells common? A. Heart B. Liver C. Lungs D. Pancreas E. Stomacharrow_forwardGlands are derived from a.nerve tissue. b.connective tissue. c.muscle tissue. d.epithelial tissue.arrow_forward
- Which of the following statements regarding epithelial tissue are true? If a statement is false, correct it to make a true statement. a. Epithelial tissues are classified by cell shape and the number of cell layers. b. Epithelial tissues function in protection, immune defenses, secretion, transport, and sensation. c. Epithelial tissue is highly vascular. d. A goblet cell is a unicellular exocrine gland that secretes mucus. e. Pseudostratified epithelium appears to be simple epithelium but is actually stratified. f. Stratified epithelia are specialized to allow substances to cross their cells rapidly.arrow_forwardWhich tissue has cells in lacunae?a. epithelialb. cartilagec. boned. smooth musclee. Both b and c are correct.arrow_forwardWhich of the following is not a function of the epithelial tissue?a. secrete materialsb. provide sensory surfacesc. move the bodyd. protect underlying tissue from damage and dehydrationarrow_forward
- Tissues are structurally more complex than: a. organ systems. b. cells. c. organs. d. organismarrow_forwardPseudostratified ciliated columnar epithelium would be found lining? a. ducts of sweat glands.b. the oviduct.c. the larger blood vessels.d. large kidney tubules.e. portions of the respiratory system.arrow_forwardMatch the terms on the left with its description or definition on the right. There is only one answer for each item. v Simple squamous epithelium v Pseudostratified columnar epithelium A. Consists of a single layer of flat, tile-like cells with sparse cytoplasm v Chondrocytes B. Consists of multiple layers of cells where the superficial layer of cells are flat and tile-likeConsis Blood C. Consists of closely packed bundles of collagen fibers running in an irregular pattern D. Consists of closely packed bundles of collagen fibers v Cardiac muscle running the same direction E. Consists of a single layer of tall cells that appear stratified because the cells and nuclei are of different heights F. Consists of cartilage cells within a ground substance G. Hard-connective tissue consisting of osteocyes and an organic and mineralized ground substance H. Consists of formed elements and liquid matrix called plasma I. Consists of short, branching cells with one centrally located nucleus J.…arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning