the optic disk
thalamus
The collection of nerve fibers in the brain that are longitudinal in form is called a "fasciculus." Fasciculi are bundles of nerve fibers that travel together and share a common function or destination within the brain.
Nerve fibers from the medial aspect of each eye cross over at the optic chiasm to the opposite side of the brain. This allows visual information from each eye to be processed by both hemispheres of the brain for a more integrated perception of the visual world.
The nerves cross over at the medulla oblongata. This is where the nerve fibers from the brain cross to the opposite side of the body, allowing for communication between the brain and the rest of the body.
Decussation typically takes place in the brainstem and spinal cord, where nerve fibers cross over from one side of the central nervous system to the other. This crossing is important for coordinating movements and sensory information between the brain and body.
Unmyelinated nerve fibers are slower than myelinated nerve fibers. The fibers covered by myelin are much faster.
a tract is a bundle or group of nerve fibers located within the brain or spinal cord
Olfactory impulses are carried to the brain by olfactory nerve fibers, which are specialized nerve cells located in the roof of the nasal cavity. These nerve fibers send signals to the olfactory bulb located in the brain, where the information is processed and interpreted as different smells.
Cochlea.
Multiple sclerosis is a condition characterized by scattered patches of demyelination of nerve fibers in the brain and spinal cord. This demyelination disrupts the ability of nerve fibers to conduct electrical impulses, leading to various neurological symptoms.
As they extend from the retina to the brain, the nerve fibers form the optic nerve, which carries visual information. These fibers transmit signals generated by photoreceptor cells in the retina, processing light and color. The optic nerve then relays this information to the visual cortex in the brain, where it is interpreted as images. This pathway is crucial for vision, enabling us to perceive and respond to our visual environment.
The optic nerve ends up connecting to the brain at a structure called the optic chiasm, where fibers from both eyes cross over. From the optic chiasm, the nerve continues to the visual cortex in the occipital lobe at the back of the brain, where visual information is processed.