Which of the following is not true of endothelium?
A. It is avascular.
B. It allows for rapid diffusion of substances.
C. It contains a sheet of collagen fibers.
D. It consists of a single layer of cells.
E. It secretes substances.
C. It contains a sheet of collagen fibers.
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Which is not found in the wall of the large intestine?
A. Villi B. Goblet cells C. Lymphatic nodules D. Intestinal glands E. Simple columnar epithelium
Which of these substances could be driven across a membrane by the resting membrane potential?
A) H2O B) O2 C) glucose D) Na+ E) CO2
The hair cells of the cochlear duct are located in the
A) spiral organ. B) ossicles. C) ampullary crest. D) utricle. E) saccule.
All functions of the body can be interpreted as the effects of cellular activity.
Answer the following statement true (T) or false (F)