Definition The superior mesenteric plexus is a downward continuance of the celiac prevertebral plexus and refers to a complexity of neurons that is present near the root of the superior mesenteric artery and posterior aspect of the pancreas. Various secondary plexuses get arise here, which follow the route of the arterial branches of the superior…
Introduction The central nervous system (CNS) accommodates numerous nerve fibers that group together to form pathways between its different parts. These neural pathways show the communicating highways of the CNS. They can be located uniquely within the brain, giving connections between several of its structures, or they can link or connection between the brain and…
Introduction of the celiac plexus The celiac (solar) plexus is an autonomic nervous plexus that consists of the interconnected paraaortic ganglia, situated around the roots of the major abdominal aorta branches. The function of the celiac plexus is to collect both parasympathetic and sympathetic put-in from the vagus nerve (CN X) and splanchnic nerves and…
Introduction The nerve to quadratus femoris and inferior gemellus is formed from the anterior or ventral divisions of the L4, L5, and S1 nerve roots of the sacral plexus. The nerve gives muscular branches to the quadratus femoris and inferior gemellus muscles as well as giving an articular branch to the hip joint. Gross anatomy…
Introduction The nerve to the obturator internus and superior gemellus is formed by the anterior (ventral) divisions of the L5, S1, and S2 nerve roots of the sacral plexus. The nerve innervates the obturator internus and superior gemellus muscles as well as the fascia of the lateral aspect wall of the ischioanal fossa. Gross anatomy…
Introduction The medial cutaneous nerve of the forearm, this nerve is also called the medial antebrachial cutaneous nerve, is a branch of the medial cord of the brachial plexus and it supplies the anterior and medial region of the forearm as far distal as the wrist. Gross anatomy Origin The medial cutaneous nerve of the…
Introduction The medial cutaneous nerve of the arm, also known as the lesser internal cutaneous nerve of the arm, is a branch of the medial cord of the brachial plexus and it supplies the skin of the medial side of the arm as far distal as the medial epicondyle. Gross anatomy Origin The medial cutaneous…
Introduction The posterior auricular nerveThe posterior auricular nerve is the first extracranial branch of the facial nerve trunk. It supplies the posterior belly of the occipitofrontalis and the auricular muscles and provides cutaneous sensation from the skin envelope of the mastoid process and parts of the auricle. Extracranial branches The facial nerve leaves the skull…
The cardiac plexus is a network of autonomic nerves and ganglia located at the base of the heart. It is formed by cardiac branches originating from both the sympathetic and parasympathetic nervous systems. Gross anatomy of the cardiac plexus The superficial part of the cardiac plexus The superficial part of the cardiac plexus is placed…
Introduction The great auricular nerve is a superficial nerve of the neck that get arises from the cervical plexus. It gets arises from the anterior rami of spinal nerves C2 and C3 and is the longest ascending branch of the cervical plexus. Along its course, the great auricular nerve pierces on the posterior border of…
