In both the parasympathetic and sympathetic divisions of the autonomic nervous system, the efferent motor pathway involves two neurons.

1. The first neuron in this pathway is the preganglionic neuron. This neuron has its cell body in the central nervous system (CNS). The axon of the preganglionic neuron leaves the CNS and synapses with the second neuron in a ganglion outside the CNS.

2. The second neuron in this pathway is the postganglionic neuron. This neuron has its cell body in the ganglion and its axon extends from the ganglion to an effector organ (such as the heart, lungs, or stomach).

3. The preganglionic neurons in the parasympathetic division originate in the brainstem and the sacral region of the spinal cord, while those in the sympathetic division originate in the thoracic and lumbar regions of the spinal cord.

4. The neurotransmitter acetylcholine is released by the preganglionic neurons in both divisions. However, the postganglionic neurons in the parasympathetic division also release acetylcholine, while those in the sympathetic division typically release norepinephrine.

5. The effect of these neurotransmitters on the effector organs can be either excitatory or inhibitory, depending on the type of receptors present on the effector cells.

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In both the parasympathetic and sympathetic divisions of the autonomic nervous system, the efferent motor pathway involves two neurons.

1. The first neuron in this pathway is the preganglionic neuron. This neuron has its cell body in the central nervous system (CNS). The axon of the preganglionic neuron leaves the CNS and synapses with the second neuron in a ganglion outside the CNS.

2. The second neuron in this pathway is the postganglionic neuron. This neuron has its cell body in the ganglion and its axon extends from the ganglion to an effector organ (such as the heart, lungs, or stomach).

3. The preganglionic neurons in the parasympathetic division originate in the brainstem and the sacral region of the spinal cord, while those in the sympathetic division originate in the thoracic and lumbar regions of the spinal cord.

4. The neurotransmitter acetylcholine is released by the preganglionic neurons in both divisions. However, the postganglionic neurons in the parasympathetic division also release acetylcholine, while those in the sympathetic division typically release norepinephrine.

5. The effect of these neurotransmitters on the effector organs can be either excitatory or inhibitory, depending on the type of receptors present on the effector cells.

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In both the parasympathetic and sympathetic divisions of the autonomic nervous system, the efferent motor pathway involves two neurons.

1. The first neuron in this pathway is the preganglionic neuron. This neuron has its cell body in the central nervous system (CNS). The axon of the preganglionic neuron leaves the CNS and synapses with the second neuron in a ganglion outside the CNS.

2. The second neuron in this pathway is the postganglionic neuron. This neuron has its cell body in the ganglion and its axon extends from the ganglion to an effector organ (such as the heart, lungs, or stomach).

3. The preganglionic neurons in the parasympathetic division originate in the brainstem and the sacral region of the spinal cord, while those in the sympathetic division originate in the thoracic and lumbar regions of the spinal cord.

4. The neurotransmitter acetylcholine is released by the preganglionic neurons in both divisions. However, the postganglionic neurons in the parasympathetic division also release acetylcholine, while those in the sympathetic division typically release norepinephrine.

5. The effect of these neurotransmitters on the effector organs can be either excitatory or inhibitory, depending on the type of receptors present on the effector cells.

In both the parasympathetic and the sympathetic divisions, the efferent motor pathway involves

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