What nerves are in the lumbosacral plexus?

The nerves arising from the lumbar plexus from superior to inferior are iliohypogastric, ilioinguinal, genitofemoral, lateral femoral cutaneous, femoral nerve, obturator, and nerve to the lumbosacral trunk. The iliohypogastric nerve is created from spinal levels T12 and L1.

What do the lumbosacral nerves control?

L1 spinal nerve provides sensation to the groin and genital regions and may contribute to the movement of the hip muscles. L2, L3, and L4 spinal nerves provide sensation to the front part of the thigh and inner side of the lower leg. These nerves also control movements of the hip and knee muscles.

What are nerve roots forming lumbar plexus & lumbosacral plexus?

The lumbar plexus is a web of nerves (a nervous plexus) in the lumbar region of the body which forms part of the larger lumbosacral plexus. It is formed by the divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve.

How lumbosacral trunk is formed?

The lumbosacral trunk (also called the lumbosacral cord) is formed primarily by the L5 root, with a contributing branch from the L4 root (see Figure C5-1). It then travels a relatively long distance in close contact with the ala of the sacrum, which is adjacent to the sacroiliac joint.

What are nerves arise from the lumbosacral plexus?

The lumbosacral plexus is a network of nerves derived from lumbar and sacral roots with each one of them dividing into anterior and posterior branches. Their communications are called lumbar plexus (compare: brachial plexus).

What are the nerve roots of the lumbar spine?

The lumbar nerve roots are pairs of nerves that exit from the spinal cord, below each vertebra in the lumbar spine. These include L1, L2, L3, L4, and L5, and are named for the vertebra above them.

How many nerve roots in lumbar spine?

In all, there are 31 pairs of spinal nerve roots, but after L-1, which is the level of the first lumbar vertebra, the spinal cord ends.

What is the function of the lumbar nerve?

A lumbar nerve is part of the cable-like network of fibers which transmits sensations and movement between the brain and the body. In the human body, five lumbar nerves are grouped together in a set known as the lumbar plexus.