Only one but there are several divisions of it such as central vs peripheral or sympathetic vs parasympathetic nervous system. It's all one but different ways of dividing it up to make sense of it.
no
nerve cells called neurons
The answer is to let a 13 year old back in school
Nerve cells, also known as neurons, are located within the nervous system. They are the building blocks of the nervous system and are found throughout the brain, spinal cord, and peripheral nerves in the body.
nerve cells make nervous tissue and muscle tissue is made up of muscle cells
A nerve fiber is a threadlike extension of a nerve cell and consists of an axon andmyelin sheath (if present) in the nervous system. There are nerve fibers in the central nervous system and peripheral nervous system. A nerve fiber may be myelinated and/or unmyelinated. In the central nervous system (CNS), myelin is produced byoligodendroglia cells. Schwann cells form myelin in the peripheral nervous system (PNS). Schwann cells can also make a thin covering for an axon which does not consist of myelin (in the PNS). A peripheral nerve fiber consists of an axon, myelin sheath, Schwann cells and its endoneurium. There are no endoneurium and Schwann cells in the central nervous system. A myocyte (also known as a muscle cell or muscle fiber) [1] is the type of cell found inmuscle tissue. They are long, tubular cells that arise developmentally from myoblasts to form muscles in a process known as myogenesis. [2] There are various specialized forms of myocytes: cardiac, skeletal, and smooth muscle cells, with various properties. Cardiac myocytes are responsible for generating the electrical impulses that control the heart rate, among other things
Nerve cells are the basic functioning component in the nervous part of the system whether peripheral or central is comprised of neurons that collect and distribute information to make the body function.
ventral nerve cord
Neurons make up only about 10% of the cells in the nervous system but they play a crucial role in transmitting and processing information. Glial cells, which provide support and protection to neurons, make up the majority of cells in the nervous system.
the structure of the nervous system is the spineal cordeSome of the structures of the nervous system include the brain and the spinal cord. Nerves are also structures included in the nervous system along with neurons.
The spinal cord and the brain make up part of the nervous system called the central nervous system. The rest of the system is made up of the peripheral nervous system.
nerve cells are everywhere! for example, you get inched and it hurts. the pain sends signals to your brain. your brain then causes you to react...by saying OUCH!!! When the signals get sent to your brain, your brain tells them how to react...you bbleed, your brain tells the affected area to create a scab.