Iliohypogastric nerve
Iliohypogastric nerve
Introduction The iliohypogastric nerve is a branch of the lumbar plexus, originating mainly from the L1 spinal nerve. It provides motor innervation to the lower abdominal muscles (such as the…
Perineal Nerve
Introduction The perineal nerve is a big terminal branch of the pudendal nerve that normally begins during its passage through the pudendal canal or shortly after it exits the canal.…
Sciatic Nerve
Sciatic Nerve
Introduction The sciatic nerve is the largest and longest nerve in the human body, originating from the lumbar and sacral spine (L4-S3). It runs through the buttocks and down the…
Peripheral nervous system
Peripheral Nervous System (PNS)
Introduction The peripheral nervous system is made up of nerves that branch from the brain and spinal cord. These nerves connect the central nervous system to the rest of the…
Pudendal nerve
Pudendal Nerve
Introduction The pudendal nerve is a major nerve in the pelvis, originating from the sacral plexus (S2-S4). It provides motor and sensory innervation to the perineum, including the external genitalia,…
Celiac plexus
Celiac Plexus
Introduction The celiac plexus, also known as the solar plexus, is a network of nerves located in the upper abdomen, near the aorta and behind the pancreas. It plays a…
Intercostal Nerves
Intercostal Nerves
Introduction The intercostal nerves are a group of 11 pairs of nerves that originate from the thoracic spinal cord (T1 to T11). They run between the ribs, supplying the muscles…
Cervical Plexus
Cervical Plexus
Introduction The cervical plexus is a collection of cervical nerves created by the anterior (ventral) rami of spinal nerves C1-C4 (sometimes known as the first through fourth cervical nerves). The…
Sacral Plexus
Sacral Plexus
Introduction The sacral plexus is a neural network made up of the lumbosacral trunk (L4, L5) and the sacral spinal nerves (S1–S4). The sacral plexus is situated on the posterior…
Lumbar Plexus
Lumbar Plexus
Introduction The lumbar plexus is a neural network formed by the anterior rami of spinal nerves L1 through L4 and the anterior ramus of spinal nerve T12. It is situated…
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