What is the Brachial Plexus? The brachial plexus is a network of nerves that originates from the spinal cord in the neck region and supplies the upper limb, including the shoulder, arm, forearm, and hand. It comes from nerve roots in the spinal cord’s cervical and upper trunk regions (C5-T1). Anatomy of Brachial Plexus: The…
Introduction The nervous system of the stomach. Types of Enteric Neurons Gastrointestinal neurons Preceptive afferent neurons Circular muscle motorneurons excitatory Circular muscle motorneurones inhibitory Motorneurons of longitudinal muscle Rising interneurons Motorneurons of longitudinal muscles Descending interneurons Neurons of the secretomotor and vasomotor Intestinofugal neurons Additional gastrointestinal regions Enteric neural networks Enteric nervous system modular organization…
A local circuitry of neurons and ganglia that is located within the gut wall (from the esophagus to the rectum) is known as the submucosal plexus (also known as the Meissner plexus). The gut’s smooth muscle is innervated by it, which is located within the submucosa. The enteric nervous system is made up of the…
Introduction The myenteric plexus, also known as Auerbach’s plexus, is a network of nerve fibers and ganglia located in the muscular layer of the gastrointestinal tract. It is one of the two major plexuses of the enteric nervous system, which is a complex system of neurons that controls the functions of the digestive system. The…
Introduction The suboccipital nerve is also referred to as the dorsal ramus of the first cervical nerve since it arises from the posterior/dorsal ramus of the first cervical spinal nerve (C1). The suboccipital nerve runs to the posterior neck region from its origin. This nerve follows the vertebral artery along its route, which is why…
The optic nerve is highly important for your vision. It’s the 2nd cranial nerve out of 12 cranial nerves and part of your central nervous system, which includes your brain and spine. The optic nerve travels electrical impulses from your eyes toward your brain. Your brain processes according to sensory information so that you can…
Introduction The lumbar plexus is a compound neural network formed by the lower thoracic and lumbar ventral nerve roots. They are formed where T12 to L5 leave the spinal cord through intervertebral foramina. The supply motor and sensory supply to the lower limb and pelvic girdle The nerves get arising from the lumbar plexus are…
Overview The nervous system is formed by the vast neural networks; signaling within these circuits allows thinking, language, feeling, learning, memory, and all function and sensation. It is well-established that via the plasticity of existing cells our nervous systems can adjust to situations or circumstances not previously encountered, but it also has been shown that…
Introduction Inferior mesenteric plexus The inferior mesenteric plexus is derived mainly from the aortic plexus. It surrounds the inferior mesenteric artery, and splits into a number of secondary plexuses, which are divided into all the parts supplied by the artery, the left colic, and sigmoid plexuses, which supply the terminal and sigmoid parts of the…
Introduction Thoracic Spinal nerve formationThere are a total of 12 pairs of Thoracic spinal nerves that get originate from the thoracic segments of the spinal cord. These nerves majorly supply the skin over the chest region and intrinsic back muscles of the thoracolumbar area. The thoracic nerves also supply some of the regions of the…
