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Parasympathetic post-ganglionic transmission

Involves muscarinic and nicotinic ACh receptors that are ion channels

Involves muscarinic and nicotinic ACh receptors that are GPCRs

Involves muscarinic ACh receptors that are GPCRs

Involves nicotinic ACh receptors that are ion channels

Involves muscarinicACh receptors that are ion channels

Image failed to load: Varicosity

The figure below shows an example of one type of chemical synapse. In the ANS this synapse is found

At the post-ganglionic synapse

In the CNS

At the ganglion

At the pre-ganglionic synapse

In the pre-synaptic terminals

Post-ganglionic transmission in the ANS uses the following mechanisms to slow down the transmission of information to effectors

B class motor neurons, discrete synapses and post-synaptic GPCRs

Pre-synaptic facilitation and inhibition, discrete synapses and post-synaptic GPCRs

B class motor neurons, and pre-synaptic facilitation and inhibition

C class motor neurons, diffuse synapses and post-synaptic GPCRs

A alpha motor neurons and GPCRs post-synaptically

In the ANS, B class motor neurons

Are the pre-ganglionic neurons in the Sympathetic but not Parasympathetic arms of the ANS

Do not innervate muscles but innervate neurons

Innervate fast-response muscles and glands

Innervate either neurons or glands

Are the neurons used for post-ganglionic transmission

Which of the following is NOT true of pre-ganglionic neurons in the autonomic nervous system.

their cell bodies are located in the CNS

they innervate a second neuron which is located in the PNS

their neurotransmitter acts on muscarinic ACh receptors in post-ganglionic neurons

they form a discrete synapse

they all use acetylcholine as a neurotransmitter

Image failed to load: Varicosity

The figure below shows an example of one type of chemical synapse. In this synapse the structure that contains vesicles of transmitter is called

A Varicosity

An output terminal

A Terminal

A diffuse terminal

A Discrete synapse

The somatic and autonomic nervous systems are similar in that

They both use second messenger systems at the peripheral tissues they innervate

They both use Acetylcholine at the peripheral tissues they innervate

They both orignate in the CNS

In both cases ACh acts on nicotinic receptors only

They both consist of two-neuron chains from CNS to peripheral organs

The nucleus of the solitary tract is

The site from which sympathetic pre-ganglionic neurons originate

The most important medullary nucleus getting ANS non-nociceptive sensory inputs.

The master controller of Autonomic and Endocrine functions

The site from which parasympathetic pre-ganglionic neurons originate

The nucleus that interfaces neural and hormonal control of the body