Cervical Region
The preganglionic fibers of the autonomic nervous system travel through the cranial nerves (in the head) and the spinal nerves (in the rest of the body). They synapse with postganglionic neurons in autonomic ganglia before reaching their target organs.
Dendrites and cell bodies of sympathetic preganglionic neurons are located in the lateral horn of the spinal cord gray matter, specifically in the intermediolateral cell column (IML) between T1 and L2 segments.
No, the chain ganglion contains cell bodies (soma) of autonomic motor neurons, not sensory neurons. Sensory neurons have their cell bodies located in the dorsal root ganglion outside the spinal cord.
Yes, the sympathetic division is often described as thoracolumbar because its preganglionic neurons originate from the thoracic and lumbar regions of the spinal cord. This division is responsible for the "fight or flight" response in the body.
The sympathetic motor neurons come from the thoracic through the lumbar region of the spinal cord.
The preganglionic fibers of the autonomic nervous system travel through the cranial nerves (in the head) and the spinal nerves (in the rest of the body). They synapse with postganglionic neurons in autonomic ganglia before reaching their target organs.
The nerve that carries autonomic signals away from the central nervous system is classified as the preganglionic nerve. These nerves originate from the brain or spinal cord and synapse with postganglionic neurons in autonomic ganglia.
The anterior root is composed of nerve fibers responsible for motor activity (i.e. efferent nerve fibers that will stimulate muscles, etc.). I think some of the things it is composed of include:Gamma motor neurons, alpha motor neurons, preganglionic autonomic neurons
ANS reflex arcs are stimulated by input from sensory or visceral receptors. The signals are processed in the hypothalamus (or regions of the spinal cord) and target effector control is then regulated via myelinated preganglionic neurons
Dendrites and cell bodies of sympathetic preganglionic neurons are located in the lateral horn of the spinal cord gray matter, specifically in the intermediolateral cell column (IML) between T1 and L2 segments.
Preganglionic because they are myelinated. FALSE
No, the chain ganglion contains cell bodies (soma) of autonomic motor neurons, not sensory neurons. Sensory neurons have their cell bodies located in the dorsal root ganglion outside the spinal cord.
The ventral root of a spinal nerve contains efferent motor neurons that carry signals away from the spinal cord to muscles and glands in the body. These motor neurons control voluntary movements and autonomic functions.
Brain
most of the neurons in the brain and spinal cord are
The sympathetic motor neurons come from the thoracic through the lumbar region of the spinal cord.
Yes, the sympathetic division is often described as thoracolumbar because its preganglionic neurons originate from the thoracic and lumbar regions of the spinal cord. This division is responsible for the "fight or flight" response in the body.