Hormones
Speed: 268 mph (at least 250 mph) fast response.
Speed: slow acting – minutes, days to take effect.
Duration/length: short response – effect only lasts seconds.
Duration/length: long lasting response – effect can last minutes, days, months.
Area of target: non-specific – can affect a few or many body parts.
Area of target: specific – affects target cells or organs.
Transmitted from: brain and spinal cord (CNS).
Transmitted from: Glands. Comparison: Neurons and Hormones