Motor impulses travel from the brain through the spinal cord via motor neurons. When the brain sends a signal, it activates these neurons, which then transmit the impulse to muscle fibers at the neuromuscular junction. This process induces muscle contraction, allowing movement. The entire pathway relies on electrical signals and neurotransmitter release to facilitate communication between the nervous system and muscles.
The impulse has to cross over a synapse to another neuron or an effector.
Motor Cortex
A nerve impulse typically moves in one direction, away from the cell body of a neuron and towards the axon terminals. This unidirectional flow ensures efficient communication within the nervous system.
The pathway that the nerve impulse takes from your foot to your leg is called the sensory pathway. This pathway includes sensory neurons that carry signals from the foot to the spinal cord and then to the brain, where the sensation of pain is perceived and a motor response is initiated to move away from the tack.
An impulse move in dance is when the dancer "tweaks" his or her body suddenly. These movements look like sudden jerks or twitches.
cause the body to move.
cause the body to move.
cause the body to move.
The impulse has to cross over a synapse to another neuron or an effector.
Impulses in the cell body (soma) of a neuron and move on along its axon, which conducts the impulse to a synapse at the end of the axon. There neurotransmitters are released into the synaptic cleft, so that the impulse can stop or go on to the next neuron or a gland/motor end plate, depending on the kind of neurotransmitter. Different types of neurotransmitters are: acetylcholine, adrenaline, noradrenaline, serotonine.
Muscles make possible every move we make, even when we are sleeping. Your muscles move according to what they are fromed. To be more specific, a muscle is made up of many bundles of muscle fibers. Each of these bundles of fibers is called a motor unit. Each unit has a motor nerve which branches out at its tip. Each muscle fiber, therefore, has its own nerve ending to stimulate it. An electrochemical impulse is transmitted by chemicals from the nerve ending to the fiber, causing the fiber in that motor unit to contract and this is how each muscle of your body moves.
Motor Cortex
A neuron is called a inter-neuron because that specific neuron takes impulse from one neuron to a next neuron. For example your sensory neuron sends a impulse that you had felt a hot object. It goes through the spine to a inter-neuron to a motor neuron (this processes is called a reflex). Then the motor neuron tells your muscles in your hand to move
Muscles move on commands from the brain. Single nerve cells in the spinal cord, called motor neurons, are the only way the brain connects to muscles. When a motor neuron inside the spinal cord fires, an impulse goes out from it to the muscles on a long, very thin extension of that single cell called an axon.
The main difference is that motor neurons move signals away from the central nervous system and spinal cord where as sensory neurons move signals towards the central nervous system and spinal cord.
Skeletal muscles are controlled by nerves from the Peripheral Nervous System. This causes the muscles to contract when they receive the messages transmitted along motor neurons, originating in the motor areas of the cerebral cortex. The axons of these motor neurons extend out to the muscle where it divides and goes to different muscles. The motor pathways that carry the nerve impulse from brain to muscle are composed of two neurons: - Upper motor neurons --> (cell body in the brain) - Lower motor neurons --> (cell body in the grey matter of the spinal cord) When a nerve impulse initiates the contraction of a skeletal muscle, it results in movement about a joint. Hope this helped :)