The muscle spindle receptors sense the arm movement of the bar being lifted and send that information to the brain so it can react properly.
not really, i'm in a lot of pain today...
are you ready for the track meet today?
the receptors in her muscles send signals to the brain to make her legs move and start to run with her dogs.
while sleeping, her muscular and nervous systems are resting until it is time to wake up in the morning.
Nervous System: a network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. Brain-sends signals to other body parts. Muscular system: responsible for the movement of the human body. Nerves- make certain body parts move certain ways at certain times.