Parasympathetics overview

The video tutorial provides an overview of the parasympathetic nervous system using a two-neuron model. It explains the origins of preganglionic and postganglionic neurons, highlighting the CNS origins in the brainstem and sacral spinal cord. The tutorial details the pathways and components involved, including cranial nerve ganglia and intramural ganglia. It also covers the innervation of various organs, emphasizing the role of cranial nerves, particularly the vagus nerve, in parasympathetic functions.

What is the origin of the preganglionic neuron in the parasympathetic nervous system?

• Peripheral autonomic ganglion

• Central nervous system

• Target organ

• Ventral root

Which cranial nerves are involved in parasympathetic innervation?

• Cranial nerves 2, 5, 8, and 11

• Cranial nerves 4, 6, 11, and 12

• Cranial nerves 3, 7, 9, and 10

• Cranial nerves 1, 2, 5, and 8

Where do preganglionic parasympathetic neurons in the sacral region arise?

• Ventral horn

• Lateral horn

• Cerebral cortex

• Dorsal horn

Which nerve is primarily responsible for parasympathetic innervation of the heart and lungs?

• Cranial nerve 3

• Cranial nerve 7

• Cranial nerve 9

• Cranial nerve 10

From which spinal cord levels does parasympathetic innervation of the hindgut arise?

• L1-L3

• S2-S4

• T1-T4

• C1-C3