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What major nerve arise from the plexuses?
what major nerves arise from the coccygeal plexus
What are the two major intrinsic nerve plexuses of the enteric nervous system?
myenteric plexus and submucous plexus
Which nerve plexuses serve the shoulder and arm?
brachial :)
Where is the intrinsic nerve plexuses located?
The intrinsic nerve plexuses, also known as the enteric nervous system, are primarily located within the walls of the gastrointestinal tract. They are found in two main plexuses: the myenteric plexus, which lies between the longitudinal and circular muscle layers, and the submucosal plexus, located in the submucosa. These plexuses play a crucial role in regulating digestive processes, including motility and secretion.
Why is the formation of nerve plexuses a survival advantage?
Damage to a single spinal nerve will not completely paralyze a limb.
What are the two primary nerve plexuses regulating digestive function?
The two primary nerve plexuses regulating digestive function are the myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus). They are part of the enteric nervous system and play important roles in controlling gastrointestinal motility, secretion, and blood flow.
What anatomical structure provides alternative nerves in case a regional nerve is damaged?
The anatomical structure that provides alternative nerves in case a regional nerve is damaged is known as a nerve plexus. Nerve plexuses, such as the brachial and lumbosacral plexuses, are networks of intersecting nerves that allow for the redistribution of nerve fibers. This anatomical arrangement ensures that if one nerve is compromised, other nearby nerves can still innervate the corresponding muscles and skin areas, providing a degree of redundancy and functional resilience.
Why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves?
The reason why a peripheral nerve such as the sciatic nerve can contain nerve fiber from several spinal nerves is owing to nerve plexuses. These are networks of nerves all tangled together and found mostly in the limbs.
What are the four nerve plexuses?
Cervical: C1 - C5Innervates muscles of neck and extend into thoracic cavity, where they control diaphragmatic muscles. Major nerve: Phrenic...which provides entire nerve supply to diaphragm.Brachial: C5-T1Innervates pectoral girdle and upper limbs. Major nerves: Radial nerve, median nerve, ulnar nerve.Lumbar: T12 - L4Innervates pelvic girdle and lower limbs. Major nerves: Genitofemoral nerve, lateral femoral cutaneous nerve, and femoral nerve.Sacral: L4-S5Innervates pelvic girdle and lower limbs. Major nerves: Sciatic nerve (which branches into tibial and fibular nerves) and pudendal nerve.
Which of the following is not a nerve plexus?
The spinal nerve is not a nerve plexus. Nerve plexuses are complex interwoven networks of nerves that form in the peripheral nervous system, whereas spinal nerves are the mixed nerves that emerge from the spinal cord and are not organized in a plexus-like fashion.
The phrenic nerve arises from the?
The phrenic nerve arises from the spinal cord at C3, C4, and C5 nerve levels. It originates from the cervical plexus and innervates the diaphragm muscle, playing a crucial role in controlling breathing.
What kind of digestive tract neural reflex involves only the nerve plexuses that lie in the walls of the digestive tract itself?
short reflexes
