![]() ![]() However, in the brain (part of the central nervous system), the " basal ganglia" is a group of nuclei interconnected with the cerebral cortex, thalamus, and brainstem, associated with a variety of functions: motor control, cognition, emotions, and learning. The term "ganglion" refers to the peripheral nervous system. In the autonomic nervous system, fibers from the central nervous system to the ganglia are known as preganglionic fibers, while those from the ganglia to the effector organ are called postganglionic fibers. Autonomic ganglia contain the cell bodies of autonomic nerves.Cranial nerve ganglia contain the cell bodies of cranial nerve neurons.Dorsal root ganglia (also known as the spinal ganglia) contain the cell bodies of sensory (afferent) neurons. ![]() Ganglia provide relay points and intermediary connections between different neurological structures in the body, such as the peripheral and central nervous systems.Īmong vertebrates there are three major groups of ganglia: Ganglia often interconnect with other ganglia to form a complex system of ganglia known as a plexus. Ganglia are primarily made up of somata and dendritic structures which are bundled or connected. In the autonomic nervous system there are both sympathetic and parasympathetic ganglia which contain the cell bodies of postganglionic sympathetic and parasympathetic neurons respectively.Ī pseudoganglion looks like a ganglion, but only has nerve fibers and has no nerve cell bodies. In the somatic nervous system this includes dorsal root ganglia and trigeminal ganglia among a few others. Note the axons growing out of the ganglion.Ī ganglion is a group of neuron cell bodies in the peripheral nervous system. A dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. ![]()
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