Exposure to the bacterium Clostridium tetani causes continuous release of acetylcholine. What effect does this have on smooth muscle?
A. Spastic paralysis
B. Flaccid paralysis
C. No effect
D. Lockjaw
E. Myocardial atrophy
Answer: C
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The contraction of the diaphragm and the external intercostal muscles begins inspiration. Explain exactly what happens, in terms of volume and pressure changes in the lungs, when these muscles contract
What will be an ideal response
The structure that separates the right and left halves of the heart is the ____________
Fill in the blank(s) with correct word
The cytosol and cytoplasmic organelles are components of the ________.
A. cytoplasm B. mitochondria C. cytoskeleton D. nucleus E. plasma membrane
Which of the following would decrease the net flux of a penetrating solute into a cell?
A. increasing the permeability constant for that solute B. decreasing the temperature C. increasing the concentration of the solute in the extracellular fluid D. increasing the area of the cell membrane E. decreasing the thickness of the membrane