1
General Science / Re: What do nerves do in a human?
« on: 25/08/2018 19:25:10 »
Hey. Do not quite understand what exactly you asked. Information about this a lot on the Internet.
The human nervous system is, perhaps, the most complex system of any organism. Only the human brain contains more than 100 billion nerve cells, and each nerve cell can have up to 10,000 connections to other nerve cells.
This means that the nerve impulse is an electrochemical signal or from the brain can travel along 1015 possible routes. The nervous system has two main departments: the central nervous system (CNS) and the peripheral nervous system (PNS).
The peripheral nervous system includes nerves that carry sensory messages into the central nervous system and nerves that send information from the central nervous system to the muscles and glands.
There are three types of nerves in the human body, called sensory nerves, motor nerves and mixed nerves.
Sensory nerves. These are the nerves that send messages to the brain or spinal cord from the senses. They are enclosed in the form of bundles, like structures or nerve fibers in the peripheral nervous system. They are information from PNS to CNS.
Motor nerves - motor nerves - are those nerves that carry messages in the form of a response from the brain or spinal cord to other parts of the body, such as muscles and glands. They are responsible for the transmission of information from the CNS to the PNC
Mixed nerves are nerves that perform both sensory nerve action and motor nerve. Spinal nerves are functionally mixed and carry both sensory and motor fibers.
The neuron itself has a primary structure with an axon or soma body, a bunch of squiggles on a soma, called dendrites, and a long unfortunate structure called an axon, with synaptic pens on the other side of the axon. Nerve fiber is a set of axons that extends from the body of the cell to the point where it innervates. The nerve fiber also contains other cells, such as Schwann cells, which create a layer around the nerve, called the myelin sheath.
Based on what the nerves do and what they transport, they can be classified.
These can be nerves that arise from the brain itself, called the cranial nerves or those that arise from a spinal column called the spinal nerves.
Thanks for reading.
The human nervous system is, perhaps, the most complex system of any organism. Only the human brain contains more than 100 billion nerve cells, and each nerve cell can have up to 10,000 connections to other nerve cells.
This means that the nerve impulse is an electrochemical signal or from the brain can travel along 1015 possible routes. The nervous system has two main departments: the central nervous system (CNS) and the peripheral nervous system (PNS).
The peripheral nervous system includes nerves that carry sensory messages into the central nervous system and nerves that send information from the central nervous system to the muscles and glands.
There are three types of nerves in the human body, called sensory nerves, motor nerves and mixed nerves.
Sensory nerves. These are the nerves that send messages to the brain or spinal cord from the senses. They are enclosed in the form of bundles, like structures or nerve fibers in the peripheral nervous system. They are information from PNS to CNS.
Motor nerves - motor nerves - are those nerves that carry messages in the form of a response from the brain or spinal cord to other parts of the body, such as muscles and glands. They are responsible for the transmission of information from the CNS to the PNC
Mixed nerves are nerves that perform both sensory nerve action and motor nerve. Spinal nerves are functionally mixed and carry both sensory and motor fibers.
The neuron itself has a primary structure with an axon or soma body, a bunch of squiggles on a soma, called dendrites, and a long unfortunate structure called an axon, with synaptic pens on the other side of the axon. Nerve fiber is a set of axons that extends from the body of the cell to the point where it innervates. The nerve fiber also contains other cells, such as Schwann cells, which create a layer around the nerve, called the myelin sheath.
Based on what the nerves do and what they transport, they can be classified.
These can be nerves that arise from the brain itself, called the cranial nerves or those that arise from a spinal column called the spinal nerves.
Thanks for reading.