Autonomic Nervous System Quiz

What is the anatomical unit of the nervous system?

• Muscle

• Neuron

• Bone

• Skin

What is a reflex action?

• An action that is always planned

• An action that requires conscious thought

• An action that occurs in response to a stimulus

• A voluntary action

Where are the cell bodies of afferent neurons located?

• In the brain

• In the spinal cord

• In the autonomic ganglia

• In the dorsal root ganglia of the spinal nerves

Which type of neuron carries impulses from the CNS to the effector organ in the autonomic reflex arc?

• Preganglionic neuron

• Postganglionic neuron

• Sensory neuron

• Motor neuron

What is the function of autonomic ganglia?

• To regulate body temperature

• To store information

• To produce hormones

• To act as distributing centers

Which type of ganglia is the site of relay of parasympathetic fibers only?

• Lateral ganglia

• Collateral ganglia

• Terminal ganglia

• Paravertebral ganglia

What is the chemical transmitter in all autonomic ganglia?

• Adrenaline

• Noradrenaline

• Acetylcholine

• Dopamine

Where is acetylcholine continuously synthesized?

• In the liver

• In the adrenal medulla

• In terminal cholinergic endings

• In the brain

Which type of receptors are located on effector cell membranes supplied by the parasympathetic nervous system?

• Nicotinic receptors

• Beta receptors

• Muscarinic receptors

• Alpha receptors

What is the site of release for noradrenaline in the autonomic nervous system?

• Adrenal medulla

• Postganglionic sympathetic fibers

• Autonomic ganglia

• Parasympathetic ganglia