Examlex
Although the moon appears much larger on the horizon than when it is directly above, the size of the image it casts on your retina is exactly the same in both locations.
Immune System
A complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders such as bacteria, viruses, and parasites.
Motor Neurons
Nerve cells that transmit signals from the central nervous system to muscles or glands, leading to action or movement.
Receptors
Biological structures or substances that receive or bind with specific molecules, such as neurotransmitters or hormones, to trigger a physiological response.
Spinal Cord
The major bundle of nerves running down the back in vertebrates, connecting the brain to the rest of the body and responsible for transmitting neural signals.
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