gray commissure
alpha spinal motor neuron axons leave the spinal column and enter the nerves via the ventral rami.
They are called splanchnic nerves. These nerves carry preganglionic fibers to the collateral ganglia where they synapse with postganglionic neurons.
Spinal nerves enter the spinal cord through openings called intervertebral foramina. This entry point is important because it allows sensory signals from the body to enter the spinal cord and be transmitted to the brain for processing. Similarly, motor signals from the brain can travel down the spinal cord and exit through these same openings to control muscles and organs throughout the body. The entry point of spinal nerves plays a crucial role in the efficient transmission of sensory and motor signals, allowing for proper communication between the brain and the rest of the body.
Lateral spinothalamic tract = carry pain and temperature sensationsAnterior spinothalamic tract = carry crude touch and light pressure
Spinal meningitis is typically caused by viruses or bacteria that enter the body through the nose or mouth and travel to the brain and spinal cord. This can happen through close contact with an infected person, sharing utensils or drinks, or through respiratory droplets in the air.
Introduction. Spinal cord reflexes are simple behaviors produced by central nervous system (CNS) pathways that lie entirely within the spinal cord. The sensory afferent fibers that evoke these reflexes enter the spinal cord and activate spinal motor neurons directly or through a chain of one or more spinal interneurons
Afferent impulses enter the spinal cord from the posterior section. They may get processed by interneurons. And, in most cases they exit the spinal cord through the efferent neurons in the anterior section. The reason that they refer to this as being opposite sides has to do with what are called the 'horns' inside the spinal cord. The afferent impulses enter the dorsal horns in the back and the efferent impulses exit in the front, the anterior horns. This may be why your reference, your teacher, or a book, says that impulses enter and leave from opposite sides of the spinal cord.
The dorsal column or medial lemniscus.
alpha spinal motor neuron axons leave the spinal column and enter the nerves via the ventral rami.
They are called splanchnic nerves. These nerves carry preganglionic fibers to the collateral ganglia where they synapse with postganglionic neurons.
No
Yes and No. White communicating rami contain mylinated preganglionic sympathetic nerve fibers, but are only present at the levels of spinal cord segments T1-L2 (where the cell bodies for these nerve fibers exist in the lateral horn of the spinal cord). Although the sympathetic fibers only arise in the T1-L2 spinal cord segments, they are dispersed to all spinal nerves by traveling through the sympathetic chain. The preganglionic sympathetic fibers will enter the sympathetic chain thru whit rami communicans and then do one of 4 things: 1. synapse with a postganglionic cell body in the sympathetic chain at the level it enters 2. ascend within the chain to synapse 3. descend within the chain to synapse 4. splanchnic nerves leave the chain without synapsing and synapse closer to the organ they innervate.There are, however, GRAY rami communicans for all spinal nerves.I hope that helps
Spinal nerves enter the spinal cord through openings called intervertebral foramina. This entry point is important because it allows sensory signals from the body to enter the spinal cord and be transmitted to the brain for processing. Similarly, motor signals from the brain can travel down the spinal cord and exit through these same openings to control muscles and organs throughout the body. The entry point of spinal nerves plays a crucial role in the efficient transmission of sensory and motor signals, allowing for proper communication between the brain and the rest of the body.
Afferent refers to pathways leading to the cortex (ie, sensory). Efferent are pathways leading away (ie, motor). You are *affected* by a situation, you *effect* change on someone else.
Spinal menigitis are different kinds of bacteria that can be found in your ear ,mouth, throat and nose that sometimes give you spinal menigitis. Scientists still dont know what causes the bacteria to go out of control and enter your spinal cord and messes with the joints.
The bones that give passage to the olfactory nerve fibers are the cribriform plate of the ethmoid bone. The olfactory nerve fibers pass through small openings called cribriform foramina in the cribriform plate, allowing them to enter the nasal cavity and transmit sensory information related to smell.
Lateral spinothalamic tract = carry pain and temperature sensationsAnterior spinothalamic tract = carry crude touch and light pressure