2. What is the name of muscle's state of perpetual partial tension?
A. Isotonic
OB. Tonus
C. Isometric
D. Metros

Is it considered muscles' ennervation if the sympathetic fibers innervate vessels within the muscle ? (vasomotricity)

In which way does nicotine cause addiction? by stimulating the brain's pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

The statement defines the use of ethics.