Type of neuron present in the autonomic ganglion:
**Core Concept**
The autonomic nervous system (ANS) is a branch of the peripheral nervous system that regulates involuntary functions, such as heart rate, digestion, and blood pressure. The ANS consists of two divisions: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). Autonomic ganglia are clusters of nerve cell bodies located outside the central nervous system, where synaptic transmission occurs between preganglionic and postganglionic neurons.
**Why the Correct Answer is Right**
In the autonomic nervous system, preganglionic neurons originate from the central nervous system (CNS) and synapse with postganglionic neurons in autonomic ganglia. The postganglionic neurons are the type of neurons present in autonomic ganglia. These neurons are responsible for transmitting signals from the CNS to the effector organs, such as muscles and glands. The postganglionic neurons release neurotransmitters, such as acetylcholine (ACh) or norepinephrine (NE), which then bind to receptors on the effector organs to produce a response.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a type of neuron present in autonomic ganglia.
**Option B:** This option is incorrect because it is not a type of neuron present in autonomic ganglia; it is actually a type of neuron found in the central nervous system.
**Option D:** This option is incorrect because it is not a type of neuron present in autonomic ganglia; it is actually a type of neuron found in the peripheral nervous system, but not specifically in autonomic ganglia.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that autonomic ganglia contain postganglionic neurons, which are responsible for transmitting signals from the CNS to the effector organs. This knowledge is crucial for understanding the pathophysiology of various autonomic nervous system disorders, such as autonomic dysfunction and neuropathic pain.
**Correct Answer:** C. Postganglionic neurons.