Which number indicates the reticular layer of the dermis?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B
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Dead skin cells are shed in thin sheets because they are held together by "spots" of proteoglycan reinforced by intermediate filaments. Such strong intercellular connections are called
A) gap junctions. B) intermediate junctions. C) tight junctions. D) desmosomes. E) junctional complexes.
The blood air barrier consists of
A) pseudostratified ciliated columnar epithelium. B) 1 layer of moist cuboidal epithelium. C) 2 layers of simple squamous epithelium. D) stratified squamous epithelium. E) surfactant cells.
Which of the following is not done by the respiratory system?
a. warms the air coming into the body b. filters the air coming into the body c. facilitates the perception of smell d. all of the above are done by the respiratory system
The lack of extensive divergence of parasympathetic preganglionic axons prevents the mass activation seen in the sympathetic division.
Answer the following statement true (T) or false (F)