Fill in the Gaps Comparing Somatic and Autonomic Nervous Systems Fill in the blanks in the following chart to compare these two divisions of the nervous system SOMATIC Innervates muscle Consists of nerve fiber leading from CNS to target (Hint: A number) Secretes the neurotransmitter Has an effect on target cells Operates under. control AUTONOMIC Innervates Consists of nerve fibers that synapse at a before reaching target Secretes muscle, and cardiac muscle Has an effect on target cells Operates and as neurotransmitters or

Part D- Organization of the Sympathetic Nervous System The divisions of the autonomic nervous system are distinctly organized. Place the term into the bin that best describes its location. • View Available Hint(s) Reset Help Short preganglionic fiber Long preganglionic fiber Long postganglionic fiber Chain ganglia Thoracolumbar origins Vagus nerve (CN X) Ganglia within target tissue Pelvic nerves Sympathetic division Parasympathetic division Submit

You are a famous researcher working in your lab. You isolate a piece of muscle (call it Muscle A) and examine its innervations. You find a short preganglionic neuron synapsing onto a long postganglionic neuron, which synapses onto the muscle. Then you examine Muscle B and find a single neuron innervating it. Remembering your favourite physiology class, you instantly recognize what types of neuronal connections you will find on both Muscle A and Muscle B. First give 2 characteristics of the synapse onto Muscle A. Then give 2 ways in which the synapse of Muscle B will be different.

An action potential travels down a neuron: O From dendrite to axon terminals Moves even faster because of the Nodes of Ranvier Involve Sodium Potassium Pumps All of the above