Nervous system | Definition, Function, Structure, & Facts
WEBSep 13, 2024 · Learn about the nervous system, the organized group of cells specialized for the conduction of impulses from sensory receptors to effectors. Explore the types, features, and functions of nervous systems in different organisms, from simple to complex.
Types of nervous system and how it responds to stimulus
WEBLearn how the nervous system reacts to various stimuli in different ways, from sensory input to motor output. Discover the structure and functions of the central and peripheral nervous system, and how they differ from other animals.
12.1 Basic Structure and Function of the Nervous System
WEBThe sensory functions of the nervous system register the presence of a change from homeostasis or a particular event in the environment, known as a stimulus. The senses we think of most are the “big five”: taste, smell, touch, sight, and hearing.
Nervous System - The Definitive Guide | Biology Dictionary
WEBFeb 10, 2021 · The nervous system is the organ system that coordinates the activities of muscles and organs, receives input from sense organs, and generates responses to stimuli. It consists of the brain, spinal cord, sensory organs, and neurons, and is divided into the central and peripheral nervous systems.
10.2: Organization and Functions of the Nervous System
WEBThe nervous system produces a response on the basis of the sensory stimuli. An obvious response would be the movement of muscles, such as withdrawing a hand from a hot stove, but there are broader uses of the term. The nervous system can cause the contraction of all three types of muscle tissue.
Stimulus (physiology) - Wikipedia
WEBA stimulus is a detectable change in the environment that can elicit a response from an organism. Learn about different types of stimuli, such as internal, external, touch, pain, vision, and smell, and how they are processed by the nervous system.
Overview of the nervous system: Structure and function | Kenhub
WEBNov 3, 2023 · Neurons. Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites). The nerve cell body contains the cellular organelles and is where neural impulses (action potentials) are generated.
In brief: How does the nervous system work?
WEBMay 4, 2023 · The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.
Stimulus - Definition and Examples - Biology Online Dictionary
WEBMar 28, 2024 · A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and external environment, neural pathways that conduct this information to the brain and parts of …
human nervous system - Encyclopedia Britannica
WEBLearn about the structure, function, and development of the human nervous system, the network of specialized cells that conducts stimuli and impulses in the body. Explore the central and peripheral nervous system, the brain, …