Among all different types of photography showcased on the Smashing Magazine, **underwater photography** is probably one of the most difficult ones. It requires a very specialized equipment and the knowledge of some advanced techniques to get a perfect picture.
Anatomical terms of neuroanatomy. A nerve plexus is a plexus (branching network) of intersecting nerves. A nerve plexus is composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood vessels. There are five spinal nerve plexuses, except in the thoracic region, as well as other forms of autonomic plexuses, many of which are a part of the enteric nervous system.
cervical plexus a nerve plexus formed by the ventral branches of the first four cervical spinal nerves and supplying the structures in the region of the neck.One important branch is the phrenic nerve, which supplies the diaphragm.occygeal plexus a nerve plexus formed by the ventral branches of the coccygeal and fifth sacral nerve and by a communication from the fourth sacral nerve, giving off the anococcygeal nerves. cystic plexus a nerve plexus near the gallbladder.