Neurotransmitter that promotes a muscle contraction. motor neuron
Acetylcholine
cardiac muscle
smooth muscle

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

Which action best increases one’s stamina a) exercising when you feel like it b) saving so much that one like sleep c) refusing to exercise to save the energy needed to work d)exercising on a regular basis

Anwhen planning a water activity, it's best to include a friend or a group of friends rather than going alone, even if it's aneasy activity.tf