The Autonomic Nervous System

1
The Autonomic Nervous System
2
ReviewBasic Structure of a Somatic Reflex
3
Basic Structure of a Visceral Reflex
What is the advantage of a 2nd processing center?
Compare this anatomy to that of a somatic reflex
arc.
4
Anatomy of the Motor Output in Sympathetic and
Parasympathetic nerves

• Describe the following comparisons
• location of pre-ganglionic neuron cell body
• location of ganglia
• neurotransmitter released at effectors
• What neurotransmitter is released at all
  Autonomic ganglia?

5
Motor Pathways of the SNS and ANS
Which is the post-ganglionic fiber?
6
Motor Neuron Pathways compared Autonomic vs.
Somatic
In addition to the spinal cord, where else might
the CNS center be located in Autonomic reflexes?
7
Motor Neuron Pathways of the ANS
Why do Parasympathetic and Sympathetic
stimulation have opposite effects on effectors?
8
Extrinsic Influences on the Heart an example of
ANS Dual Innervation
9
ANS Innervation of visceral organs
What is the origin of Parasympathetic nerves?
Sympathetic nerves? Name the neurotransmitter
released at autonomic ganglia. Name the
neurotransmitter released from Parasympathetic
nerves at effectors.from Sympathetic nerves at
effectors. Does the adrenal medulla receive dual
innervation? Explain.
10
Integration of the Nervous Endocrine Systems
during Stress
Describe the actions of the hormones listed in
this figure.