ch.15

Autonomic tone in autonomic motor neurons exists because

ANS neurons from both divisions commonly innervate the same organ

The neurotransmitter at all synapses and neuroeffector junctions in the parasympathetic division of the ANS is

Acetylcholine

all preganglionic autonomic fibers release____ at their synaptic terminals and the effects are always

Acetylcholine, excitatory

there is always a synapse between the CNS and the peripheral effector in the

Autonomic nervous system

Nicotinic receptor

Parasympathetic system

Adrenal Medulla

Sympathetic system

The preganglionic fibers of the sympathetic division of the ANS originate in the

Thoracolumbar region of the spinal cord

ach

all preganglionic

NE

neurotransmitter sympathetic system

alpha receptor

receptor yields stimulation

Approximately 75% percent of parasympathetic outflow us provided by the

vagus nerve

dual innervation refers to situations in which

vital organs receive instructions from sympathetic and parasympathetic fibers.