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What type of fibers make up the posterior and anterior roots of the spinal nerve?
Both Afferent and Efferentboth sensory and motorContains motor & sensory fibers!The spinal cord consists of nerve fibers that are afferent and efferent.
Are efferent nerve fibers described as motor nerve fibers?
Yes, efferent nerve fibers are often described as motor nerve fibers. Efferent nerves carry signals away from the central nervous system to muscles and glands, controlling movement and bodily functions.
What are general somatic efferent?
General somatic efferent (GSE) fibers are motor nerve fibers that originate in the spinal cord and are responsible for innervating skeletal muscles. They transmit signals from the central nervous system to the muscles, facilitating voluntary movements. GSE fibers are part of the peripheral nervous system and play a crucial role in controlling motor functions, such as walking and fine motor skills. These fibers are primarily associated with the lower motor neurons found in the spinal cord and brainstem.
Which plexus contains the foot and the leg?
The lumbar plexus contains nerve fibers that innervate the leg, and the sacral plexus contains nerve fibers that innervate the foot. The lumbar plexus arises from the lower spinal cord levels, while the sacral plexus arises from the sacral spinal cord levels.
The brachial plexus can contain fibers from?
The brachial plexus contains fibers from the ventral rami of the cervical spinal nerves (C5-C8) and the first thoracic spinal nerve (T1). These fibers combine to form the nerves that innervate the upper limb.
