What is the structure of the nervous system?

The nervous system is divided into two parts: the central nervous system consisting of the brain and spinal cord. These structures are protected by bone and cushioned from injury by the cerebrospinal fluid (CSF) the peripheral system which connects the central nervous system to the rest of the body.

Also to know is, what is the basic structure of a nerve?

Each neuron contains a nerve cell body with a nucleus and organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus. Branching off the nerve cell body are the dendrites, which act like tiny antennae picking up signals from other cells.

What is the structure and function of nerve cells?

Structure and Function: Nerve Cells. Neurons are nerve cells that originate, process, transmit, and receive nerve impulses. They are connected to other neurons or to cells in muscles, organs, or glands.

What is the structure of nervous tissue?

Nervous tissue. Nervous tissue or nerve tissue is the main tissue component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.

What is the structure of the central nervous system?

The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.

What are the three main components of the nervous system?

We could not function without our central nervous system. It controls all parts of the body. It receives and interprets messages from all parts of the body and sends out instructions. The three main components of the central nervous system are the brain, spinal cord and neurons.

What are the two main divisions of the autonomic nervous system?

The autonomic nervous system also has two divisions: the sympathetic division and the parasympathetic division. These two divisions have antagonistic (opposing) effects on the internal organs they innervate (send nerves to = act on). The sympathetic division, shown at the left, is the emergency system.

What are the structures of the peripheral nervous system?

Blue is PNS; yellow is CNS. The peripheral nervous system (PNS) is one of the two components of the nervous system, the other part is the central nervous system (CNS). The PNS consists of the nerves and ganglia outside the brain and spinal cord.

What are the two main parts of the nervous system and how do they function?

In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.

What are the three main functions of the nervous system?

The nervous system has three main functions:

  • To collect sensory input from the body and external environment.
  • To process and interpret the sensory input.
  • To respond appropriately to the sensory input.
  • What are the main components of the nervous system?

    The nervous system consists of two main parts: the central nervous system and the peripheral nervous system: The central nervous system is made up of the brain and spinal cord.

    What are three major functions of the nervous system?

    Nervous system has 3 major functions: Sensory input – sensory or afferent neutron detect internal or external changes ( stimuli ) and send the message to the brain or spinal cord.

    What are the two types of structures in the peripheral nervous system?

    The peripheral nervous system includes all the nerves in the body that lie outside of the spinal cord and the brain. These nerves carry information to and from the central nervous system to provide complex body functions. Sensory cells are involved in taking information from the periphery to the central nervous system.

    How the nervous system is organized?

    The human central nervous system contains the brain, spinal cord, and retina. The peripheral nervous system consists of sensory neurons, clusters of neurons called ganglia, and nerves connecting them to each other and to the central nervous system.

    What is the basic unit of the nervous system?

    QUESTION #4.1: What is the basic unit of the nervous system? The neuron is a single nerve cell, and you have billions of them. There are three basic types of neurons: association, afferent, and efferent. The association neurons comprise the central nervous system (CNS) that is the brain and spinal cord.

    What are the three main areas of the brain?

    It has three main parts:

  • The cerebrum fills up most of your skull. It is involved in remembering, problem solving, thinking, and feeling.
  • The cerebellum sits at the back of your head, under the cerebrum. It controls coordination and balance.
  • The brain stem sits beneath your cerebrum in front of your cerebellum.
  • Why the nervous system is the most important?

    The nervous system is an organ system in charge of sending messages to and from the brain and spinal cord to and from all parts of the body. It consists of the central nervous system and the peripheral nervous system. Another important part of the nervous system is the sense organs to which a special page is devoted.

    What part of the nervous system processes information?

    The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. The somatic system consists of nerves that connect the brain and spinal cord with muscles and sensory receptors in the skin.

    What do nerves do in the body?

    Nerves are cells called neurones, which make up our nervous system. Nerves are specialised cells – they carry messages from one part of the body to another, as tiny electrical signals. These messages are also known as nerve impulses.

    What are the three parts of the brain and what is their job?

    The brain is made of three main parts: the forebrain, midbrain, and hindbrain. The forebrain consists of the cerebrum, thalamus, and hypothalamus (part of the limbic system). The midbrain consists of the tectum and tegmentum. The hindbrain is made of the cerebellum, pons and medulla.

    What are the functions of the nervous system?

    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.

    What are the three different types of neurons?

    For the spinal cord though, we can say that there are three types of neurons: sensory, motor, and interneurons.

  • Sensory neurons.
  • Motor neurons.
  • Interneurons.
  • Neurons in the brain.
  • What are the two main parts of the peripheral nervous system?

    Peripheral Nervous System. The peripheral nervous system is divided into two major parts: the somatic nervous system and the autonomic nervous system.

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