The Central nervous systme sends impulses to the peripheral nervous system which in turn carries signals to the muscles.
The Nervous System
the nerve pathways followed by an impulse during a reflex.
The transmission between neurons depends on the number of neurotransmitters that are present. If there aren't enough transmitters, the impulse is not passed into the second neuron, meaning it's cut down. If there are enough, it leads to an action potential (nerve impulse) in the second neuron. The nerve system is a rather confusing, and very technical, system in the body.
the dorsal vessel
By being wrapped in myelin sheaths, produced by Schawann cells in the peripheral nervous system and oligodendrocytes in the central nervous system.
receptor: initiate impulse: receive something sensory neuron: will carry impulse from receptors to the central nervous system motor neuron: tranmits impulse away from central nervous system into effector internuncial neuron: carry impulse from pre- synaptic to post synaptic effector: muscles or glands
A 'service mains' is not associated with an electricity 'transmission' system, but with a low-voltage 'distribution' system. The service mains is the name given to the cable that connects a building to the low-voltage mains supply.
the neuron consist of the million short dendrites that receive electric impulse to the body cell, also the long axon that takes away the electric impulse away from the cell body and also it contain the myelin sheath that helps in contraction on axon to facilitate the quick transmission of the nerve impulse
Insect muscles are divided into four categories: visceral, segmental, appendicular, and flight. Visceral muscles are associated with the digestive system, segmental muscles are used to assist in molting, maintain body pressure by increasing it, and in larvae, move. Appendicular muscles move any appendages, often as a single unit. Flight muscles are specialized and capable of rapid contractions.
It observes the impulse
Nerve fibers that are scattered throughout the dermis are associated with the sensory system.
There are no skeletal muscles in the circulatory system. They are smooth muscles and cardiac muscles.
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 :)