It' the spinal cord.
Nerve tissue
nerves
it is the cocklea
nerves
Nervous tissue sends messages from the brain to the rest of the body. It consists of neurons that transmit electrical signals to communicate information throughout the body.
nugger
retina
That would be the retina.
If you are talking in relation to pain extending from your lower back and down your legs, it is generally caused by the sciatic nerve. However, it should always be checked out as there are many other reasons for shooting pain, some good, some bad and you want to be sure it's not the bad.
The retina is the layer of nerve tissue in the back of the eye that contains sensory neurons called photoreceptors. These photoreceptors, specifically rods and cones, respond to light and convert it into electrical signals, which are then transmitted to the brain via the optic nerve, allowing us to perceive visual information.
The largest peripheral nerve in the human body is the sciatic nerve. It originates from the lower back, branching from the lumbar and sacral plexus, and extends down the back of each leg. The sciatic nerve is responsible for transmitting signals to and from the legs and feet, playing a crucial role in movement and sensation. Its size and length make it the most significant nerve in the peripheral nervous system.
The nerve at the back of the eye is the optic nerve. It transmits visual information from the retina to the brain, allowing us to see. Damage to the optic nerve can result in vision problems or even blindness.