Epithelial membranes are typically composed of
A. epithelium and underlying connective tissue.
B. connective tissue and underlying epithelium.
C. connective tissue and underlying muscle tissue.
D. epithelium and underlying muscle tissue.
Answer: A
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The corticospinal system is often referred to as the
A) red nucleus. B) reticular formation. C) spinothalamic tracts. D) pyramidal system. E) medullary centers.
Which of the following does not describe the justaglomerular complex?
A) Its granular cells produce rennin. B) Its macula densa cells produce aldosterone. C) It helps control systemic blood pressure. D) It regulates the rate of filtrate formation.
The reactions of the Krebs cycle
A. take place in the cytosol of human cells. B. generate ATP directly by substrate-level phosphorylation. C. take place only when no oxygen is present. D. are important for the metabolism of carbohydrates but not other molecules. E. produce pyruvate and lactate as end products.
Peristaltic waves are ________
A) churning movements of the gastrointestinal tract that aid in mechanical breakdown of chyme B) segmental regions of the gastrointestinal tract C) waves of muscular contractions that propel contents from one point to another D) pendular movements of the gastrointestinal tract