Nervous system and body

Concussions are also a type of internal head injury. The loss of potassium along with the pumping of sodium ions back out of the cell through the sodium-potassium pump restores the cell to the mV resting potential. Finally, many fascicles are wrapped together in another layer of connective tissue called the epineurium to form a whole nerve.

Nervous System

Its function is to allow damaged nerves to regenerate. The gastrula has the shape of a disk with three layers of cells, an inner layer called the endodermwhich gives rise to the lining of most internal organs, a middle layer called the mesodermwhich gives rise to the bones and muscles, and an outer layer called the ectodermwhich gives rise to the skin and nervous system.

The cell body is the roughly round part of a neuron that contains the nucleus, mitochondria, and most of the cellular organelles. That's why many scientists believe it's important to keep challenging your brain to learn new things and make new connections — it helps keeps the brain active over the course of a lifetime.

Synapses A synapse is the junction between a neuron and another cell. Your brain has a little bunch of cells on each side called the amygdala say: Scientists do know for sure that the right half of the cerebrum controls the left side of your body, and the left half controls the right side.

A concussion is the temporary loss of normal brain function as a result of an injury. The ion concentration results in a resting electrical potential of millivolts mVwhich means that the inside of the cell has a negative charge compared to its surroundings.

The optic nerve II carries visual information from the eyes to the brain. There are 2 divisions of the autonomic nervous system in the body: There are many billions of nerve cells, also called neurons, in the nervous system.

What is the Nervous System?

Mental illnesses that can be seen in younger people include depressioneating disorders such as bulimia or anorexia nervosa, obsessive-compulsive disorder OCDand phobias.

Interneurons form complex networks within the central nervous system to integrate the information received from afferent neurons and to direct the function of the body through efferent neurons.

It connects the rest of the brain to the spinal cord, which runs down your neck and back. When neurons that are intrinsically rhythmic are connected to each other by excitatory or inhibitory synapses, the resulting networks are capable of a wide variety of dynamical behaviors, including attractor dynamics, periodicity, and even chaos.

If an injury to the spine produces nothing worse than swelling, the symptoms may be transient, but if nerve fibers in the spine are actually destroyed, the loss of function is usually permanent. Since the discovery of LTP inmany other types of synaptic memory traces have been found, involving increases or decreases in synaptic strength that are induced by varying conditions, and last for variable periods of time.

Aug 19,  · The nervous system is made up of all the nerve cells in your body. It is through the nervous system that we communicate with the outside world and, at the same time, many mechanisms inside our body are controlled.

Aug 09,  · The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

The nervous system transmits signals between the brain and the rest of the body, including internal organs. If your body is too hot, the hypothalamus tells it to sweat. If you're too cold, the hypothalamus gets you shivering. Both shivering and sweating are attempts to get your body's temperature back where it needs to It's the spinal cord and nerves — known as the nervous system — that let messages flow back and forth between the brain and body.

The nervous system has two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS).The central system is the primary command center for the body, and is comprised of. The nervous system is an organ system containing a network of specialized cells called neurons that coordinate the actions of an animal.

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.

Nervous system and body
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Nervous System: Facts, Function & Diseases