Aldosterone targets cells in the
A. proximal convoluted tubule.
B. loop of Henle.
C. distal convoluted tubule.
D. glomerulus.
E. collecting duct.
C
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How would blocking the activity of acetylcholinesterase affect skeletal muscle?
A) It would make the muscles less excitable. B) It would produce muscle weakness. C) It would cause spastic paralysis (muscles are contracted and unable to relax). D) It would cause flaccid paralysis (muscles are relaxed and unable to contract). E) It would have no effect on skeletal muscles.
Thomas is deaf, but can feel the vibrations of music through sensory receptors in his skin called:
A) tactile (Meissner) corpuscles. B) Merkel cells. C) dermal papillae. D) lamellated (Pacinian) corpuscles.
What is the relationship between myelin and the propagation speed of action potentials?
A) The presence of myelin slows the propagation speed of action potentials. B) The presence of myelin speeds up the graded depolarization but does not affect the propagation speed of action potentials. C) The presence of myelin increases the propagation speed of action potentials. D) The presence of myelin does not affect the speed of action potentials. E) The presence of myelin blocks the propagation of action potentials.
Casein is a major protein produced by cells in:
a. Eccrine sweat glands b. Mammary glands c. Mucus-type salivary acini d. Serous-type salivary acini e. The exocrine pancreas