The ____________ Law States That Neurons Are Either on or Off,with

Q13: The _ secretes chemical messages that circulate

Q14: There are two major divisions of the

Q15: The _ moves from one end of

Q16: _ carry messages received by the dendrites

Q17: A _ is the space between two

Q19: The cerebral cortex is responsible for our

Q20: A portion of the brain known as

Q21: Behavioral genetics studies the effects of _

Q22: Each kind of neurotransmitter is exactly the

Q23: The cortex has three major sections called