White rami appear white in color due to the fact that they are ________.
Fill in the blank(s) with the appropriate word(s).
myelinated
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The major body part(s) derived from ectoderm is/are
A. bone tissue. B. muscle tissue. C. liver and pancreas. D. nervous system and skin.
The osmotic pressure of a solution is directly related to its ________ concentration.
A. water B. solvent C. matrix D. solute
All ANS preganglionic axons release ________ as their neurotransmitter.
Fill in the blank(s) with the appropriate word(s).
When comparing cardiac muscle cells and skeletal muscle cells,
A. the rate of action potential propagation is faster in cardiac muscle. B. both possess intercalated discs. C. only skeletal muscle has a plateau phase in its contraction cycle. D. action potentials are conducted from cell to cell only in cardiac muscle. E. both are voluntary.