In the muscular system, what is a motor unit? a. The muscle fibers innervated by a single motor neuron
b. The stimulus at which the first observable contraction occurs
c. The ability of a muscle to recoil and resume its original resting length
d. The thin membrane that surrounds a muscle

How does social isolation affect teens?

Jason pressures emmanuel to be a gang member. which choice is the best way emmanuel can respond? tell jason he is not interested in joining. ignore jason and brush off what he says. lighten the mood by changing the subject. keep quiet and continue listening to jason.

Which of the following statements about the societal costs of tobacco use is true? a. tobacco use affects the tax rate of only those individuals who smoke. b. the negative effects of tobacco use are only experienced by the smoker. c. tobacco users contribute to an overall loss of productivity. d. increased healthcare costs are mainly absorbed by tobacco users