Muscles that derive from somites (skin, tongue, mucosa) are innervated by general somatic efferents (GSE). Somatic sensation from head, neck, meninges and sinus mucosa reach the brain by general somatic affer- ents (GSA). Parasympathetic innervation to visceral structures is considered general visceral efferents (GVE).Muscles that derive from somites (skin, tongue, mucosa) are innervated by general somatic efferents (GSE). Somatic sensation from head, neck, meninges and sinus mucosa reach the brain by general somatic affer- ents (GSA). Parasympathetic innervation to visceral structures is considered general visceral efferents (GVE).
What is GSE and GVE?
What are GVE fibers?
General visceral efferent fibers (GVE) or visceral efferents or autonomic efferents, are the efferent nerve fibers of the autonomic nervous system (also known as the visceral efferent nervous system that provide motor innervation to smooth muscle, cardiac muscle, and glands (contrast with special visceral efferent (SVE …
What is GSE in cranial nerves?
Cranial nerve III, IV, and VI (oculomotor, trochlear, and abducens nerves, respectively) are general somatic efferent (GSE) nerves responsible for innervating the extraocular muscles within the orbit.
Where are GSE cell bodies?
The general somatic efferent (GSE), neurons (motor) are located in the pons. Axons emerge from the lateral aspect of the pons and together with sensory fibers form the trigeminal nerve. After exiting the pons, the trigeminal nerve courses in the trigeminal canal within the petrous portion of the temporal bone.
What is meant by general somatic afferent?
The general somatic afferent (GSA) system comprises the neurons distributed primarily by the fifth cranial nerve to the surface of the head and all the spinal nerves to the surface of body and limbs that are sensitive to touch, temperature, and noxious stimuli.
What is autonomic afferent?
The autonomic nervous system (ANS) consists of general visceral efferent (GVE) fibers that create a motor response due to general visceral afferent (GVA) fiber stimulation. … These afferent fibers allow the body to monitor the internal environment and adjust effector organs as necessary to maintain homeostasis.
Where is afferent fiber located?
ganglia They have a smooth and rounded cell body located in the ganglia of the peripheral nervous system. Just outside the spinal cord, thousands of afferent neuronal cell bodies are aggregated in a swelling in the dorsal root known as the dorsal root ganglion.
What are afferent fibers?
Afferent neurons, also called sensory neurons, are the nerve fibers responsible for bringing sensory information from the outside world into the brain. Sensory information may involve special senses, such as vision, hearing, smell, or taste, as well as the sense of touch, pain, and temperature.
What is the Epineurium composed of?
Epineurium is permeable and consists of moderately dense connective tissue that binds nerve fascicles. The epineurium contains adipocytes, fibroblasts, connective tissue fibers, mast cells, small lymphatics, as well as blood vessels and small nerve fibers innervating the vessels.