rootlets
the what? root of a spinal nerve consists of motor neuron axons
Spinal cord, spinal nerve roots, and Dura mater
Spinal nerves (aka mixed spinal nerves) are formed from the dorsal and ventral roots coming out of the spinal cord.A spinal nerve is made of mixed nerves. They have both sensory and a motor aspect. The roots of sensory fibers are on the dorsal side of the spinal cord.
Spinal nerves (aka mixed spinal nerves) are formed from the dorsal and ventral roots coming out of the spinal cord.A spinal nerve is made of mixed nerves. They have both sensory and a motor aspect. The roots of sensory fibers are on the dorsal side of the spinal cord.
Spinal roots are bundles of nerve fibers that emerge from the spinal cord and connect it to the peripheral nervous system. They are classified into two main types: dorsal (posterior) roots, which carry sensory information from the body to the spinal cord, and ventral (anterior) roots, which transmit motor signals from the spinal cord to the muscles. Each spinal nerve is formed by the merging of these roots, facilitating communication between the central nervous system and the rest of the body.
Nerve roots exit the spinal cord between the vertabrae.
Disease of nerve roots is called radiculopathy. nerve root is part of the nerve that exits from spinal cord. radiculopathy can be caused by disc or some diseases like diabetes can cause inflammation of nerve root.
Afferent nerve fibers enter the spinal cord through the dorsal roots.
The brachial plexus is formed from the anterior rami of the spinal nerve roots C5, C6, C7, C8, and T1. These roots combine to create trunks, divisions, cords, and branches that innervate the upper limb. The contributions from these nerve roots are crucial for motor and sensory functions in the arm and hand.
The combining form for the area where the 31 pairs of spinal nerves emerge from the spinal cord is "radicul/o," which refers to spinal nerve roots. This term is often used in medical contexts to describe conditions or procedures related to the spinal nerve roots, such as radiculopathy. The spinal nerves emerge from the spinal cord at the intervertebral foramina.
Preganglionic parasympathetic fibers. In the Parasympathetic division, the preganglionic axons leave the ventral roots of the spinal cord and collectively form the pelvic splanchnic nerves.
Damage to the spinal nerve roots can lead to pain, numbness, weakness, and paresthesia (abnormal sensations in the absence of stimuli) in the limbs or trunk.