Impulsive definition: If you describe someone as impulsive , you mean that they do things suddenly without... | Meaning, pronunciation, translations and examples (s. Clarke) 2. Learn more. A body that has momentum cannot be stopped and therefore it is mandatory to apply a force against its direction of motion for a particular period of time. (Science: mechanics) The action of a force during a very small interval of time; the effect of such action; as, the impulse of a sudden blow upon a hard elastic body. Nerves, hormones and homeostasis 6.5.1 State that the nervous system consists of the central nervous system (CNS) and peripheral nerves, and is composed of cells called neurons that can carry rapid electrical impulses. This is for biology homework. 3. forceful, inciting, or impelling. ADVERTISEMENTS: In this article we will discuss about:- 1. Definition noun (1) The movement of action potential along a nerve fiber in response to a stimulus (such as touch, pain, heat or cold). Synonym Discussion of impulse. Learn what momentum and impulse are, as well as how they are related to force. Facilitated diffusion is a _____ transport mechanism. Impulse definition, the influence of a particular feeling, mental state, etc. impulse in Biology topic From Longman Dictionary of Contemporary English im‧pulse /ˈɪmpʌls/ ●○○ noun 1 [ countable, uncountable] a sudden strong desire to do something without thinking about whether it is a sensible thing to do SYN urge impulse to do something a sudden impulse to laugh Marge’s first impulse was to run. This is for biology homework. The quiz will ask you to: ... Go to Essential Biology Concepts Ch 6. Pro trainer banned for giving horse a racist name (s. Clarke) Before using our website, please read our Privacy Policy. Impulse is defined in classical mechanics as a force multiplied by the amount of time it acts over. Ans. An impulse is a sudden desire to do something. borderline personality disorder, attention deficit hyperactivity disorder, or in fetal alcohol spectrum disorders. The axon terminal releases neurotransmitters that carry the nerve impulse to the next cell. 2) With the appropriate stimulation, the voltage in the dendrite of the neuron will become somewhat less negative. Menu. 3. nerve impulse. They are electrical signals which move along a neuron’s dendrite to produce an action potential. If you've ever kicked a ball, hit a punching bag, or played sports that involved any kind of ball, you have been using the concept of impulse without even knowing it. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Definition of Impulse. It is not intended to provide medical, legal, or any other professional advice. If it does not reach that amplitude, then the neuron remains at rest, and the local potential, through a process called passive spread, diffuses along the nerve fibre and back out through the… 2. a sudden uncontrollable determination to act. i.e, impulse = (force)(time duration) For a constant impulse, force acting on a body is inversely proportional to the time of action of force. See also point of maximal impulse. Impulse. From Longman Dictionary of Contemporary English. 2. Collins English Dictionary. Neurons. In psychology, impulsivity (or impulsiveness) is a tendency to act on a whim, displaying behavior characterized by little or no forethought, reflection, or consideration of the consequences. Other articles where Threshold potential is discussed: nervous system: Localized potential: …reaches what is called the threshold potential, it triggers the nerve impulse, or action potential see below. Nerve impulse in the largest biology dictionary online. The sense organs, including the eye, contain receptors that are sensitive to stimuli and respond with reflex actions. impulse [im´puls] 1. a sudden pushing force. How to use impulse in a sentence. Impulse. Impellere. Definition of 'impulse' Word Frequency. cardiac impulse a heartbeat palpated over the left side of the chest at the apex of the heart. She admitted that the necklace had been an impulse buy. Learn more about resting potential and electrically excitable cells. an impulsive kiss. Brain Definition. The nervous system includes the central and peripheral nervous systems. Neuron definition, a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites. Biology definition, the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior. All Levels. The content on this website is for information only. VIEW ALL. What does impulse mean? Nerve impulse Definition and Examples - Biology Online ... Summary A nerve impulse begins when a neuron receives a chemical stimulus. 4. She felt a sudden impulse to play some music. Impulsive definition, actuated or swayed by emotional or involuntary impulses: an impulsive child. When the nerve impulse reaches the dendrites at the end of the axon, chemical messengers called neurotransmitters are released. Impulse turbine definition is - a turbine in which the rotor is driven by fluid jets impinging directly against the blades. Neural impulse propagation Definition Neuron is the functional unit of the nervous system which transmits neural impulses from the nervous system to the effector organs. In classical mechanics, impulse (symbolized by J or Imp) is the integral of a force, F, over the time interval, t, for which it acts. Synonyms: urge, longing, desire, drive More Synonyms of impulse. All Rights Reserved. Neuron Definition “Neurons are the fundamental unit of the nervous system specialized to transmit information to different parts of the body.” What is a Neuron? Force applied over time creates an impulse, a change in momentum. Impulse: Definition, Equation, Calculation & Examples Conservative Forces: Examples & Effects Heat Engines & Efficiency Conservation of Mechanical … Learn what momentum and impulse are, as well as how they are related to force. Impulse Definition Physics: The product of impulsive force and time for which it acts is called impulse. All spontaneous animal motion is performed by mechanical impulse. n. 1. a. All Levels. Neurons connect different areas of the central and peripheral nervous systems. 1. variable noun. The resting potential of electrically excitable cells lies in the range of −60 to −95 millivolts. Rosa had an impulse to tell Henry the truth. As per nerve impulse definition in Biology, it is how neurons interact with each other. (of physical forces) acting for a short time; not continuous. See also: impulse They are electrical signals which move along a neuron’s dendrite to produce an action potential. Resting potential, the imbalance of electrical charge that exists between the interior of electrically excitable neurons and their surroundings. impulse synonyms, impulse pronunciation, impulse translation, English dictionary definition of impulse. Hence, a higher amount of force is requ… Pulse is often measured by feeling the arteries of the wrist or neck. The act of impelling, or driving onward with sudden force; impulsion; especially, force so communicated as to produced motion suddenly, or immediately. In calculus terms, the impulse can be calculated as the integral of force with respect to time. The electrical discharge that travels along a nerve fiber; ”they demonstrated the transmission of impulses from the cortex to the hypothalamus. Vous avez encore des questions? 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