The retina is the part of the eye that contains light receptors.
Nervous System
The eye is a part of the nervous sytem, which is essentially a network of neurons that coordinate actions and transmits signals throughout the body. There are two parts to the nervous system: central and peripheral. The eye is a part of the central nervous system, which also contains the brain and spinal cord.
The sympathetic nervous system is one of three major parts of the autonomic system. The autonomic nervous system (ANS) is the part of the nervous system that controls most of the things we don't do voluntarily. Things such as heart rate, respiratory rate, sexual arousal and tone of the muscle inside your eye (the iris). The sympathetic part of the ANS is often considered to promote a "fight or flight response" while the parasympathetic part does the opposite ("rest and digest"). If we think about a dangerous situation where you want to have a "fight or flight response", you generally want to have more light entering your eyes so that you have a heightened visual sense. This is accomplished when your sympathetic nervous system activates the radial muscles of your iris. In contrast, your constricter muscles are relaxed. This leads to dilated pupils forming part of the sympathetic response.
For the sense of hearing, the central nervous system (specifically the auditory cortex in the brain) and the peripheral nervous system (including the auditory nerve and cochlea in the ear) must be functioning. For vision, the central nervous system (particularly the visual cortex) and the peripheral nervous system (including the optic nerve and retina in the eye) are necessary for proper function.
Tracts of axons in the central nervous system (CNS) are visible to the unaided eye and are called white matter. In the peripheral nervous system (PNS), nerve bundles are visible and may appear as "cables" connecting different parts of the body.
the eye is part of the nervous system, but more specifically, the peripheral nervous system.
Yes, the eyes can be seen as part of the nervous system. This is because they are closely connected to the brain. The back part of the eye, called the retina, has special cells that take in light and turn it into signals.
Nervous System
The eyes are connected to and part of the nervous system.
The eyes are connected to and part of the nervous system.
intrinsic eye muscles are controlled by the autonomic nervous system
The part of the nervous system that responds to light is primarily the sensory nervous system, specifically the visual system. Light enters the eye and is detected by photoreceptors in the retina, namely rods and cones. These cells convert light into electrical signals, which are then transmitted via the optic nerve to the brain for processing. This response is part of the peripheral nervous system, which relays sensory information to the central nervous system.
the nervous system
Nervous system
It's the nervous system
The eye is a part of the nervous sytem, which is essentially a network of neurons that coordinate actions and transmits signals throughout the body. There are two parts to the nervous system: central and peripheral. The eye is a part of the central nervous system, which also contains the brain and spinal cord.
the nervous sestem