What function do intercalated discs serve in cardiac muscle tissue?
What will be an ideal response?
Intercalated discs contain gap junctions and modified tight junctions that unite cardiac muscle cells. These discs permit the heart muscle to contract as a unit and they enable communication among the cells.
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Ribosomes transcribe DNA into RNA.
Answer the following statement true (T) or false (F)
In an experiment, a researcher raises mice under completely germfree conditions such that colonization of their intestine with commensal bacteria cannot occur
Compared to a conventionally-raised animal, the concentration of which of the following would be expected to be increased in the colonic contents of such mice? A. butyrate B. taurochenodeoxycholic acid C. unconjugated bilirubin D. IgA E. lithocholic acid
How does conductive deafness differ from nerve deafness?
What will be an ideal response?
When flexing the elbow, the biceps brachii, brachioradialis, and brachialis are the three major agonists recruited to perform this movement because all cause flexion at the elbow. However, the biceps also cause supination, an undesired movement. Therefore another muscle acting as a ________, causing ________ must be recruited to prevent the undesired motion.
A. stabilizer, extension B. neutralizer, extension C. stabilizer, pronation D. neutralizer, pronation