Devin has been having trouble initiating movements lately and has also developed a tremor in his hands. He is diagnosed with Parkinson's disease and put on medication. To help alleviate Devin's symptoms directly, the drugs would need to increase the effects of ____.?

What is defined as the insertion of the hand or fist into the rectum?

A) Penetration B) Anal stimulation C) Fingering D) Fisting

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon? a. Transmission between neurons at synapses is slower than along axons. b. The longer an axon, the slower its velocity

c. Interneurons have thicker axons than other neurons. d. There are greater amounts of myelin involved in the reflex arc.