Simple squamous epithelium found in serous membranes lining cavities and surrounding organs is called
mesothelium
hyaline epithelium
areolar CT
endothelium
The Correct Answer is A
A. mesothelium: Mesothelium is a specialized simple squamous epithelium that lines the serous membranes of body cavities, including the peritoneum, pleura, and pericardium. It provides a smooth, friction-reducing surface and facilitates the movement of organs within these cavities.
B. hyaline epithelium: Hyaline epithelium is not a recognized tissue type. Hyaline typically refers to cartilage, not epithelial tissue, and does not line serous membranes.
C. areolar CT: Areolar connective tissue is a loose connective tissue that supports and cushions organs, but it is not an epithelial layer and does not form the lining of serous membranes.
D. endothelium: Endothelium is a simple squamous epithelium that lines blood vessels and the heart, not serous cavities. It functions primarily in exchange of materials and maintaining vascular homeostasis.
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Related Questions
Correct Answer is B
Explanation
A. collagen, elastin, and reticular fibers:These are the main types of fibers found in connective tissue, providing strength, elasticity, and support, but they do not represent all three main components.
B. ground substance, fibers, and cells:Connective tissue is composed of cells (such as fibroblasts, macrophages, and adipocytes), fibers (collagen, elastin, reticular), and ground substance (a gel-like material that fills the extracellular space). These three components work together to provide support, strength, and a medium for nutrient and waste exchange.
C. alveoli, fibrous capsule, and secretory cells:These structures are specific to glands or organs like the lungs, not general components of connective tissue.
D. fibroblasts, chondroblasts, and osteoblasts:These are specific types of connective tissue cells responsible for producing matrix in different connective tissues, but they do not account for fibers and ground substance, so they are not the three main components
Correct Answer is D
Explanation
A. TCG:DNA contains thymine (T) instead of uracil (U), and transcription involves RNA pairing, not direct DNA-tRNA pairing. TCG in DNA does not directly base-pair with tRNA during translation.
B. AUG:AUG is a codon on mRNA that codes for methionine and serves as the start codon. tRNA with an AGC anticodon would not pair with AUG.
C. UGA:UGA is a stop codon on mRNA. An AGC anticodon cannot base-pair with a stop codon, as stop codons do not correspond to tRNA anticodons.
D. UCG:The tRNA anticodon AGC is complementary to the mRNA codon UCG. Base pairing occurs via A-U and G-C hydrogen bonds, allowing proper amino acid incorporation during translation.
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