The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?
A) goblet cells, parietal cells, and Kupffer cells
B) monocytes, reticulocytes, and osteocytes
C) fibroblasts, macrophages, and mast cells
D) osteoblasts, osteoclasts, and epithelial cells
C) fibroblasts, macrophages, and mast cells
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Aldosterone stimulates Na+ absorption and K+ excretion in the kidney. This happens because
A) The cell transcribes and translates more ion transporters to be inserted in the membrane. B) Preformed ion transporters are translocated to the membrane. C) Phosphorylation of existing ion transporters increases their permeability. D) All of the above are possible.
Muscle relaxation does not take place until all of the ATP is used up
Indicate whether the statement is true or false
Cardiac muscle cells
A. have smooth ER but no T tubules. B. develop a significant oxygen deficit during systole. C. form the heart valves. D. are maintained by an extensive capillary network. E. do not contain actin and myosin like skeletal muscle fibers.
Which division of the nervous system is responsible for maintaining day-to-day activities at rest?
A. Somatic motor division B. Central nervous system C. Parasympathetic division D. Sensory (afferent) division E. Sympathetic division