Which plexus is the sciatic nerve in?

Sacral plexus, anterior view. The nerves forming the sacral plexus converge toward the lower part of the greater sciatic foramen and unite to form a flattened band. The band continues primarily as the sciatic nerve, which splits in the back of the thigh into the tibial nerve and common fibular nerve.

What is plexus neurology?

A plexus is a network of intersecting nerve fibers that control both sensations and motor functions. The plexus is a combination all the nerve fibers that serve a specific body part and distributes nerve impulses to that body part. Damage to nerves in a plexus will cause problems in the part that these nerves supply.

Which plexus contains the phrenic nerve?

Anatomy and Function The phrenic nerve is derived from the cervical plexus and receives innervation from the C3, C4, and C5 nerve roots. It is the longest branch of the cervical plexus.

Where is the lumbosacral plexus?

The lumbosacral plexus is formed by the anterior rami of the nerves (spinal segments T12–S4) to supply the lower limbs. The lumbosacral plexus can be divided into the lumbar plexus, which innervates the ventral upper half, and the sacral plexus, which mainly innervates the dorsal side.

What forms the lumbosacral plexus?

The anterior divisions of the lumbar nerves, sacral nerves, and coccygeal nerve form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic.

What does the cervical plexus do?

The function of the cervical plexus is to provide skeletal muscle control of the neck and upper torso as well as providing cutaneous sensation to parts of the occiput, neck, and shoulder. The greater occipital nerve originates from the second cervical nerve independent of the cervical plexus.

What does the lumbar plexus supply?

The lumbar plexus is a complex neural network formed by the lower thoracic and lumbar ventral nerve roots (T12 to L5) which supplies motor and sensory innervation to the lower limb and pelvic girdle.