In a homeostatic control mechanism, the receptor detects changes in the environment and relays that information to the ____________
Fill in the blank with correct word.
control center
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The muscle fibers that exhibit the most severe age-related atrophy are __________ fibers.
A. fast oxidative B. slow oxidative C. fast glycolytic D. slow glycolytic
Transcytosis combines diffusion and active transport
Indicate whether the statement is true or false
Explain the functional significance of the T-tubules of the sarcolemma and the terminal cisternae of the sarcoplasmic reticulum
A) The increased surface of both structures increases the speed and efficiency with which the end-plate potential leads to sarcomere contraction. B) The abundance of each structure increases the rate of ATP production. C) The T-tubules and terminal cisternae enhance the chemical attraction between myosin and actin. D) The increased surface area provides space for more ligand gated ion channels, thus increasing the effectiveness of acetylcholine binding.
Which of the following suppresses the body's natural immune defense system?