In smooth muscle cells, acetylcholine stimulates activation of the enzyme ________, which cleaves ________ to form the second messengers ________ and ________.

Choose the type of information that the soft organ smooth muscle first order neuron are sending to the central nervous system: 1, sterogotic information  2, stretch information 3, proprioceptive information 4, temperature information This is the second time in 10 min I asked this question, the fomer one been rejected due to incompleted. But this is the whole inforamtion I had copied from my home work, no letter missed.

Most immediate physiological adjustments to exercise occur prior to any change in tissue metabolic demand for oxygen or nutrients.  This occurs because exercise increases sympathetic nervous system activity.  With your knowledge of exercise and the control of alpha motor neurons by the primary motor cortex of the brain, how does increased exercise influence the sympathetic nervous system?

A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called ________.