In certain epithelial cells, the plasma membrane has a scalloped contour and contains many rigid membranous plaques. In which type of epithelium can such cells be found?
a. Simple cuboidal epithelium
b. Simple columnar epithelium
c. Simple squamous epithelium
d. Stratified squamous epithelium
e. Transitional epithelium
ANS: E
In transitional epithelium, the superficial cells must drastically flatten out when the urinary blad-der fills with urine and increases its volume. These cells must suddenly acquire extra plasma membrane to accommodate this change in cell shape. Extra membrane is added in the form of plaques that otherwise are stored in the cytoplasm in vesicles, which have the ability to fuse to the plasma membrane. See 2-11.
You might also like to view...
The primary intracellular cation is ________.
A. Na+ B. Mg2+ C. K+ D. Ca2+
A substance that provokes an immune response is called a(n)
A) thymosin. B) complement. C) chemotoxin. D) irritant. E) antigen.
The pulmonary arteries carry blood to the
A) heart. B) lungs. C) brain. D) intestines. E) liver.
The predominant tissues composing the subcutaneous tissue are ________ tissue and ________ tissue.
A. elastic connective; fibrous connective B. elastic connective; adipose C. areolar connective; adipose D. fibrous connective; areolar connective