• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Microsoft Word 97
Microsoft Word 97

... Using the key below, for each statement 1-5, choose the most suitable condition to match each statement. Place the letter of that condition in the space provided in front of each statement. Letters A, B and C represent areas where blockages of impulses due to severing or a local anesthetic may occur ...
Fill in the blanks on LB page 67-68.
Fill in the blanks on LB page 67-68.

... (output zones); electrical signals are initiated at the axon hillock (a trigger zone), the place where the axon and cell body are joined. C. A Neuron at Rest, Then Moved to Action 1. A neuron at rest maintains a voltage difference across the plasma membrane, called the resting membrane potential. 2. ...
Document
Document

... Prepare for final exam!!!  “HOMEWORK” (NOT COLLECTED – but things to think about for studying): ...
Final Exam Practice Problems
Final Exam Practice Problems

... Note: Attempt to do these problems without looking at the book/lectures to make sure you really know it (you’ll probably want to attempt thema when you’ve done most of your studying already). Answers will be posted late next week. 1. A ferret embryo is injected with 3H-thymidine at age E29, the age ...
Introduction to Psychology Quiz #1 1. The main divisions of the
Introduction to Psychology Quiz #1 1. The main divisions of the

... Sean threw his bat into the dirt after he struck out for the third time during the softball game. Which part of the brain is involved in this expression of anger? a. corpus callosum b. parietal lobe c. reticular formation d. limbic system ...
05_Boyle_compiled
05_Boyle_compiled

... b. The extracellular membrane has a higher concentration of sodium compared with the intercellular space. c. The extracellular membrane has a higher concentration of potassium compared with the intercellular space. d. The membrane potential must pass a certain threshold in order to fire an action po ...
Nervous System
Nervous System

... Peripheral Nervous System  Motor Neurons: divided into somatic and autonomic nervous system  Somatic nervous system: controls skeletal muscles and external sensory organs such as the skin. System is voluntary, except for reflex reactions of skeletal muscles. ...
the PDF file
the PDF file

... and hence supplies more oxygen to the muscles. This results in increasing breathing rate and blood pressure which enable them to fight with such urgent situation. 4. Why are some patients of diabetes treated by giving injections of insulin? Answer Diabetes is caused due to less or no secretion of ho ...
CHAPTER 3 – THE BIOLOGICAL BASIS OF BEHAVIOUR
CHAPTER 3 – THE BIOLOGICAL BASIS OF BEHAVIOUR

... electrochemical impulses. Neurons are dispersed amongst neuroglial cells, which provide the interstitial tissue that insulates neurons from each other. Neurons react to stimuli from within the body or from the external environment. They transmit information to the brain and other body parts, from wh ...
Basic Neuroscience Series: Introduction and Series Overview
Basic Neuroscience Series: Introduction and Series Overview

... 4. Electron microscopy • Cell types: neurons, glia, ...
Peripheral Nervous System
Peripheral Nervous System

... Messages are gathered by the dendrites & cell body Transmitted along the axon in the form of a short electrical impulse called Action Potential ...
Chapter 2 - davis.k12.ut.us
Chapter 2 - davis.k12.ut.us

... 8. Increasing excitatory signals above the threshold for neural activation will not affect the intensity of an action potential. This indicates that a neuron's reaction is A) inhibited by the myelin sheath. B) delayed by the refractory period. C) an all-or-none response. D) dependent on neurotransmi ...
The Nervous System
The Nervous System

... unipolar except for bipolar neurons in special sense organs; cell bodies in sensory ganglia outside CNS Receptors: ▫ extroceptors (pain, temperature, touch) ▫ interoceptors (organ sensation) ▫ proprioceptors (muscle sense, position, movement) ▫ Motor/Efferent: carry messages from CNS to effectors; d ...
Unit 3 - Mayfield City Schools
Unit 3 - Mayfield City Schools

... to other cells -branch out from soma -receive input from other neurons through receptors on their surface -fatty coating surrounding the axon -insulation for the electrical impulses carried down the axon and speeds up the rate at which electrical information travels down the axon -knobs at the end o ...
Chapter Three Study Guide
Chapter Three Study Guide

... The nerve impulse caused by a change in the electrical charge across the cell membrane of the axon. When the neuron ‘fires’, this charge travels down the axon and causes neurotransmitters to be released by the terminal buttons. All-or-None Principal: ...
Biopsychology Revision
Biopsychology Revision

... nerve impulse travels down an axon nerve impulse reaches synaptic terminal this triggers the release of neurotransmitters the neurotransmitters are fired into the synaptic gap • neurotransmitter binds with receptors on the dendrite of the adjacent neuron • if successfully transmitted the neurotransm ...
The Nervous System
The Nervous System

... a. gathers information from inside and outside the body and picks up and carries the response signals. The Peripheral Nervous System A. Consists of nerves that fan out from the CNS to the muscles, skin, internal organs, and glands. B. Two Subdivisions 1. Autonomic Nervous System a. controls involunt ...
The Nervous System
The Nervous System

... The cylindrical bundle of nerve fibers and associated tissue that is enclosed in the spine and connects nearly all parts of the body to the brain ...
Graded Potentials
Graded Potentials

...  Describe the anatomical and functional divisions of the nervous system.  Sketch and label the structure of a typical neuron, describe the functions of each component, and classify neurons on the basis of their structure and function.  Describe the locations and functions of the various types of ...
Biological Psychology A branch of psychology concerned with links
Biological Psychology A branch of psychology concerned with links

neuron
neuron

Human Nervous System
Human Nervous System

... receptors to the spinal cord and brain motor nerves contain the long axons of motor neurons; transmit impulses from the central nervous system to the effectors ...
12-2cut
12-2cut

... • If nicotine removed (stop smoking), system unbalanced. Effects unpleasant ...
Ch 34 Action Potential and Neurons
Ch 34 Action Potential and Neurons

Neuron_Exercises_HPsychAY10
Neuron_Exercises_HPsychAY10

... b. give definitions for: action potential; refractory period; resting potential; all-ornone principle. c. what are the divisions of the nervous system and what are their primary functions? 3. Write a series of questions and answers that could teach a non-psych noob how neurons communicate with each ...
< 1 ... 431 432 433 434 435 436 437 438 439 ... 524 >

Stimulus (physiology)



In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report