What is the main function of the nervous system?

The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.

What 3 things can the nervous system perform?

The nervous system has 3 main functions: sensory, integration, and motor.

What are the characteristics of the nervous system?

The nervous system has three broad functions: sensory input, information processing, and motor output. In the PNS, sensory receptor neurons respond to physical stimuli in our environment, like touch or temperature, and send signals that inform the CNS of the state of the body and the external environment.

What is the primary nervous system found in?

The nervous system is made up of the central nervous system and the peripheral nervous system: The brain and the spinal cord are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.

What is a synapse?

synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction. synapse; neuron.

What are the 4 major functions of the nervous system?

The four main functions of the nervous system are:

• Control of body’s internal environment to maintain ‘homeostasis’ An example of this is the regulation of body temperature.
• Programming of spinal cord reflexes. An example of this is the stretch reflex.
• Memory and learning.
• Voluntary control of movement.

What are the two main components of the nervous system?

The nervous system has two main parts:

• The central nervous system is made up of the brain and spinal cord.
• The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

What are the four main functions of the nervous system?

What functions are controlled by the autonomic nervous system?

The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal.

What are progressive neurological disorders?

Progressive neurological disorders are conditions where there is a progressive deterioration in functioning. Progression may be gradual over many years, or even decades or more rapidly over weeks and months. These disorders are likely to affect the individual for the rest of his or her life.

What is the function of the nervous system in organisms?

Organisms that possess a nervous system are capable of much more complex behaviour than are organisms that do not. The nervous system, specialized for the conduction of impulses, allows rapid responses to environmental stimuli.

What is the structure of the nervous system in marine animals?

In primitive animals such as Hydra, a marine organism related to jellyfish and sea anemones, the nervous system consists of a diffuse net of individual nerve cells and fibres.

What is the function of the primitive node?

As the primitive streak elongates, migrating cells of the epiblast join the tip of the streak, and a dynamic mass of cells, called the primitive node, becomes evident at the tip of the primitive streak.

How does the nervous system help animals maintain homeostasis?

The nervous system, specialized for the conduction of impulses, allows rapid responses to environmental stimuli. Many responses mediated by the nervous system are directed toward preserving the status quo, or homeostasis, of the animal.