Unit 2 bio-behavior review guide
... c. synapse d. none of the above 10. The part of the neuron that RECEIVES messages, like the branches of a tree, is called a(n) a. axon b. dendrite c. synapse d. neurotransmitter 11. Neurotransmitters a. help send information from one neuron to another b. are chemical messengers c. help bridge the ga ...
... c. synapse d. none of the above 10. The part of the neuron that RECEIVES messages, like the branches of a tree, is called a(n) a. axon b. dendrite c. synapse d. neurotransmitter 11. Neurotransmitters a. help send information from one neuron to another b. are chemical messengers c. help bridge the ga ...
The role of the nervous system in detecting and
... The role of the nervous system in detecting and responding to stimuli Detecting and responding in animals A complex animal may need to respond immediately to a stimulus. In many situations, it is important that a change is detected instantly and appropriate signals sent quickly to relevant parts of ...
... The role of the nervous system in detecting and responding to stimuli Detecting and responding in animals A complex animal may need to respond immediately to a stimulus. In many situations, it is important that a change is detected instantly and appropriate signals sent quickly to relevant parts of ...
IV. Conduction Across Synapses
... neurotransmitter transported back into pre-synaptic neuron for re-use ex: norepinephrine dopamine serotonin D. Neurotransmitters chemical messengers at synapses most are excitatory – depolarize post-synaptic membrane some are inhibitory – hyperpolarize post-synaptic membrane effect of neurotransmitt ...
... neurotransmitter transported back into pre-synaptic neuron for re-use ex: norepinephrine dopamine serotonin D. Neurotransmitters chemical messengers at synapses most are excitatory – depolarize post-synaptic membrane some are inhibitory – hyperpolarize post-synaptic membrane effect of neurotransmitt ...
Biology 2401 Anatomy and Physiology I notes
... with muscle cell it is called neuromuscular junction) - axons branch and each branch ends in an expanded tip called a synaptic terminal or synaptic knob ( maybe as many as 1,000) - synaptic knobs contain membrane sacs called vesicles that are filled with molecules of a chemical messenger called a ne ...
... with muscle cell it is called neuromuscular junction) - axons branch and each branch ends in an expanded tip called a synaptic terminal or synaptic knob ( maybe as many as 1,000) - synaptic knobs contain membrane sacs called vesicles that are filled with molecules of a chemical messenger called a ne ...
Unit 3A: Neural Processing and the Endocrine System Introduction
... 3. Axons are long “arms” that send info away from the cell body to other neurons or body parts. 1. Axons are insulated by the myelin sheath. This insulation helps control the impulses and speeds their travel. 2. Messages travel along neurons at between 2 and 200 mph (depending on the type of neuron) ...
... 3. Axons are long “arms” that send info away from the cell body to other neurons or body parts. 1. Axons are insulated by the myelin sheath. This insulation helps control the impulses and speeds their travel. 2. Messages travel along neurons at between 2 and 200 mph (depending on the type of neuron) ...
Nolte – Chapter 1 (Introduction to the Nervous
... Multiple dendritic projections from the cell body and almost always an axon Pyramidal. Cerebellar purkinje o Bipolar Two processes – one axon – one dendrite Retinal cells/ olfactory/ vestibular hearing. o Unipolar Only one axon that emits from one cell body. Nothing else. An example of ...
... Multiple dendritic projections from the cell body and almost always an axon Pyramidal. Cerebellar purkinje o Bipolar Two processes – one axon – one dendrite Retinal cells/ olfactory/ vestibular hearing. o Unipolar Only one axon that emits from one cell body. Nothing else. An example of ...
Document
... –Action potentials are propagated only from cell body to synaptic cleft •Cannot be generated where K+ is leaving axon and Na+ channels are inactivated ...
... –Action potentials are propagated only from cell body to synaptic cleft •Cannot be generated where K+ is leaving axon and Na+ channels are inactivated ...
Impulse Conduction Practice Questions
... a. Which area of the graph indicates the diffusion of Na+ ions into the neurons? Explain your answer. (2 marks) ...
... a. Which area of the graph indicates the diffusion of Na+ ions into the neurons? Explain your answer. (2 marks) ...
doc Behavioural_Neuroscience_Jan_11
... Sodium-potassium transporters, energised by adenosine triphosphate (ATP) molecules produced by the mitochondria, exchange 3 Na+ ions for 2 K+ What causes the Action Potential?: The action potential occurs when there is a sudden influx of positive Na+ ions into the cell. This influx is caused b ...
... Sodium-potassium transporters, energised by adenosine triphosphate (ATP) molecules produced by the mitochondria, exchange 3 Na+ ions for 2 K+ What causes the Action Potential?: The action potential occurs when there is a sudden influx of positive Na+ ions into the cell. This influx is caused b ...
Nervous System Review ANSWERS File
... 23. Explain the 2 ways that the hormones involved in homeostasis are controlled. Through negative feedback (when “enough” of the hormone has been produced, it will stop the production of more of it) and through other hormones that have the opposite function 24. What 2 hormones are stored and release ...
... 23. Explain the 2 ways that the hormones involved in homeostasis are controlled. Through negative feedback (when “enough” of the hormone has been produced, it will stop the production of more of it) and through other hormones that have the opposite function 24. What 2 hormones are stored and release ...
Lecture 1 Brain Structure
... Ca2+ . (Also activates structural intracellular changes -> learning.) ...
... Ca2+ . (Also activates structural intracellular changes -> learning.) ...
CHAPTER 5: SIMPLE NERVOUS SYSTEMS AND BEHAVIOR
... • Implicit or procedural memory: perceptual/motor skills, habits, including classical and operant conditioning, habituation, and sensitization. • Aplysia: a simple animal, simple nervous system, and simple behavior, a reduced form of a human brain. ...
... • Implicit or procedural memory: perceptual/motor skills, habits, including classical and operant conditioning, habituation, and sensitization. • Aplysia: a simple animal, simple nervous system, and simple behavior, a reduced form of a human brain. ...
The Neural Basis Of Memory
... neurons can be seen by the naked eye, so can be observed, stimulated or removed . ...
... neurons can be seen by the naked eye, so can be observed, stimulated or removed . ...
The Neuron: The Basic Unit of Communication Neuron: Basic
... 2. Drugs can mimic or block the effects of a neurotransmitter by fitting into receptor sites and preventing the neurotransmitter from acting. For example, the drug curare produces almost instant paralysis by blocking acetylcholine receptor sites on motor neurons. 3. Drugs can affect the length of ti ...
... 2. Drugs can mimic or block the effects of a neurotransmitter by fitting into receptor sites and preventing the neurotransmitter from acting. For example, the drug curare produces almost instant paralysis by blocking acetylcholine receptor sites on motor neurons. 3. Drugs can affect the length of ti ...
Neurotransmitter proteins
... 1) What is the function of the nervous system? 2) List the 3 main parts and describe the purpose of the 3 main parts of a neuron. 3) Describe the internal and external environment of a neuron in resting potential. 4) What is a synapse and why is it a problem for neurons? 5) What are the roles of the ...
... 1) What is the function of the nervous system? 2) List the 3 main parts and describe the purpose of the 3 main parts of a neuron. 3) Describe the internal and external environment of a neuron in resting potential. 4) What is a synapse and why is it a problem for neurons? 5) What are the roles of the ...
anatomy of a neuron worksheet
... 5. Incoming electrochemical impulses pas through the cell body/soma and leave the neuron through a long, thin structure called the axon. Although axons are microscopically thin, many can reach lengths up to three feet or more. Locate the axon and label it. 6. The nodes of Ranvier are simply tiny gap ...
... 5. Incoming electrochemical impulses pas through the cell body/soma and leave the neuron through a long, thin structure called the axon. Although axons are microscopically thin, many can reach lengths up to three feet or more. Locate the axon and label it. 6. The nodes of Ranvier are simply tiny gap ...
Peripheral nervous system
... Intercellular junction between dendrites and soma • electrical synapse - uses direct cytoplasmic connections ...
... Intercellular junction between dendrites and soma • electrical synapse - uses direct cytoplasmic connections ...
Introduction to the physiology of perception
... stored in the synaptic vesicles (cavities) of the sending neuron • In a synapse, an action potential cause neurotransmitters to be: - released by the presynaptic neuron - received by the postsynaptic neuron on receptor sites, areas in the receiving neuron that are sensitive to specific neurotransmit ...
... stored in the synaptic vesicles (cavities) of the sending neuron • In a synapse, an action potential cause neurotransmitters to be: - released by the presynaptic neuron - received by the postsynaptic neuron on receptor sites, areas in the receiving neuron that are sensitive to specific neurotransmit ...
Slide 1
... • Billions of neurons in the brain • 100 to 3000 connections per neuron • Majority of connections are proximal • Spikes are generally the same ...
... • Billions of neurons in the brain • 100 to 3000 connections per neuron • Majority of connections are proximal • Spikes are generally the same ...
Membrane potentials
... more permeable to K+ than Na+, thus K+ is nearly solely responsible for the RP of neurons. ...
... more permeable to K+ than Na+, thus K+ is nearly solely responsible for the RP of neurons. ...
Organization of the Nervous System and the Neuron
... No contact between neurons except at electrical synapses (escape reflexes, retina, heart) Axonal terminals release neurotransmitters which cause depolarization of next neuron Neurotransmitter is removed from synapse by reuptake at axonal terminal or enzymatic breakdown ...
... No contact between neurons except at electrical synapses (escape reflexes, retina, heart) Axonal terminals release neurotransmitters which cause depolarization of next neuron Neurotransmitter is removed from synapse by reuptake at axonal terminal or enzymatic breakdown ...
Nervous System
... Synapse are joints where neurons meet. This a space that impulses must travel through to reach another neuron. Axodendritic synapse: Synapse b/w an axon and dendrite of another cell. Axosomic synapse: Synapses between, two axons (axoaxonic), or two dendrites (dendrodendritic), or a dendrite an ...
... Synapse are joints where neurons meet. This a space that impulses must travel through to reach another neuron. Axodendritic synapse: Synapse b/w an axon and dendrite of another cell. Axosomic synapse: Synapses between, two axons (axoaxonic), or two dendrites (dendrodendritic), or a dendrite an ...
Nonsynaptic plasticity
Nonsynaptic plasticity is a form of neuroplasticity that involves modification of ion channel function in the axon, dendrites, and cell body that results in specific changes in the integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). Nonsynaptic plasticity is a modification of the intrinsic excitability of the neuron. It interacts with synaptic plasticity, but it is considered a separate entity from synaptic plasticity. Intrinsic modification of the electrical properties of neurons plays a role in many aspects of plasticity from homeostatic plasticity to learning and memory itself. Nonsynaptic plasticity affects synaptic integration, subthreshold propagation, spike generation, and other fundamental mechanisms of neurons at the cellular level. These individual neuronal alterations can result in changes in higher brain function, especially learning and memory. However, as an emerging field in neuroscience, much of the knowledge about nonsynaptic plasticity is uncertain and still requires further investigation to better define its role in brain function and behavior.