Which lists the epithelial cell barrier compartments in the order of the typical Na+ concentrations, from highest to lowest?
A. intracellular, lumen side, blood side
B. blood side, lumen side, intracellular
C. blood side, intracellular, lumen side
D. lumen side, intracellular, blood side
E. lumen side, blood side, intracellular
B
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These vessels carry oxygen-rich blood
A) aorta and pulmonary veins B) aorta and pulmonary trunk C) venae cavae and pulmonary veins D) venae cavae and pulmonary artery
Which type of bone cells have ruffled borders and secrete acids?
A. osteoblasts B. osteochondral progenitor cell C. osteoclasts D. osteocytes
The axon of an afferent neuron could synapse with:
a. a sense organ b. a muscle cell c. an interneuron d. a gland
Cytoskeletal structures that are not found in all cell types are
A) intermediate filaments. B) myofibrils. C) microtubules. D) microfilaments.