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Dopamine
Dopamine

...  Gamma-aminobutyric acid (usually abbreviated to GABA) is an inhibitory neurotransmitter found in the nervous systems of widely divergent species. It is the chief inhibitory neurotransmitter in the vertebrate central nervous system In vertebrates, GABA acts at inhibitory synapses in the brain. GABA ...
Autonomic Nervous System
Autonomic Nervous System

... of the nervous system • Specialized to conduct information from one part of the body to another • There are many, many different types of neurons but most have certain structural and functional characteristics in common: - Cell body (soma) - One or more specialized, slender processes (axons/dendrite ...
Understanding Teenagers
Understanding Teenagers

... mood & behavior (I feel this way, so I will do this or not do this. It can be very dangerous if teens just rely on their feelings to determine their actions. Their impulse control is immature. -> Risky behaviors…increased incidence of unintentional injuries, violence, substance abuse, unintended pre ...
Brain Structure and Function
Brain Structure and Function

... only found within the CNS. control excitatory neurotransmitters in the brain and controlling spinal and cerebral reflexes. anxiety disorders decreased GABA can lead to seizure activity Benzodiazepines and ...
Nervous System
Nervous System

... potential – excitable cells When unexcited: resting potential When stimulated, gated ion channels open - allow specific ion ...
Chapter 7: The Nervous System
Chapter 7: The Nervous System

... 1. Irritability- neurons have the ability to respond to a stimulus 2. Conductivity- the ability to transmit an impulse 3. The plasma membrane at rest is polarized, this is called the Resting potential (-70 mV); this means fewer positive ions are inside the cell (K+) than outside (Na+). As long as th ...
Nerve Cells and Nerve Impulses Quiz Answers
Nerve Cells and Nerve Impulses Quiz Answers

... a) one dendrite and many axons covered with a myelin sheath interrupted by nodes of Ranvier b) many dendrites and one axon covered with a myelin sheath interrupted by nodes of Ranvier c) many dendrites and one axon covered with a myelin sheath interrupted by the synapse d) one dendrite and many axon ...
The nervous system - Sonoma Valley High School
The nervous system - Sonoma Valley High School

...  An impulse begins when a neuron is stimulated strong ...
Unit 3 Essential Vocabulary File - District 196 e
Unit 3 Essential Vocabulary File - District 196 e

... motor neurons brainstem frontal lobes parietal lobes acetylcholine amygdala hippocampus plasticity sensory cortex heritability ...
GABA and GABA receptors
GABA and GABA receptors

... • Action potentialindependent mIPSPs ...
Nervous System
Nervous System

... •Cholinergic synapses release the neurotransmitter acetylcholine (ACh). •Adrenergic synapses release norephinephrine (NE), also called noradrenaline. Other important neurotransmitters t itt include i l d dopamine, d i serotonin, t i and d gama aminobutyric acid (GABA). ...
Biology and Behaviour 40s
Biology and Behaviour 40s

... • Scientists had always believed that there was some mechanism connecting two neurons together. • This was finally proven in 1920 by Otto Loewi. • Lowei’s experiment proved that the transmission from one neuron to the next involved a chemical substance. ...
Introduction to the Nervous System Guided Notes are masses of
Introduction to the Nervous System Guided Notes are masses of

... (1) _________________ Nervous System (CNS) – includes ________________ and ______________ cord (2) __________________ Nervous System (PNS) – includes _________________ of the body. This includes ____ pairs of spinal nerves and _____ pairs of cranial nerves 7. CNS neuroglial cells function as _______ ...
Nervous System
Nervous System

... synapse allowing one neuron to communicate with another • Can be excitatory (cause postsynaptic neuron to depolarize (become more positive)) • Can be inhibitory (cause post synaptic membrane to hyperpolarize (become more negative)) ...
Area of Study 2: Detecting and Responding
Area of Study 2: Detecting and Responding

... Electrical synapses are uncommon in vertebrates- but also the simplest to describe. ...
functional nervous system power point
functional nervous system power point

... • Have little or no effect on membrane voltage, but have a common carrying function such as changing the structure of the synapse. • Communicate by sending reverse-direction messages that affect the release or reuptake of transmitters. ...
nervous system worksheet
nervous system worksheet

... ..................................... 10. The sense organ or cells that receive stimuli from within and outside the body. ..................................... 11. The reaction to a stimulus by a muscle or gland. ..................................... 12.The part of the nerve cell containing the nucl ...
nervous system
nervous system

... Strychnine is a neurotoxin which acts as an antagonist of acetylcholine receptors. It primarily affects the motor nerves in the spinal cord which control muscle contraction. An impulse is triggered at one end of a nerve by the binding of neurotransmitters to the receptors. Strychnine use by athletes ...
Topic: Neurons Student learning outcome: Explain how neurons
Topic: Neurons Student learning outcome: Explain how neurons

... in the direction of the dendrites and cell body (that is, into the synapse). The dendrites and cell body pick up the Kisses and pop them into their mouth (receptor sites) and immediately pick up one of several cards (sodium ions). Once three cards have been picked up, the neuron reaches threshold (a ...
Firing Rate Models
Firing Rate Models

... WjiE is the strength of an excitatory connection from cell j to cell i. W jiI is the strength of an inhibitory connection from cell j to cell i. Figure showing simulated noisy leaky-integrate-and-fire neuron with output to a saturating (NMDA) synapse. ...
[j26]Chapter 7#
[j26]Chapter 7#

... to the next cell in the sequence via gap junctions, or indirectly are responsible for activating the release of specialized neurotransmitter chemicals. Released from vesicles into the synaptic space, these neurotransmitters diffuse a short distance, bind to specialized receptors integrated in the me ...
Module 04
Module 04

... Tens of billions of neurons, each communicating with thousands of other neurons, yield an everchanging wiring diagram. The complexity of the central nervous system allows or makes possible (enables) our thinking, feeling, and behavior. In this way, it is similar to the electronic circuitry (wiring ...
The Nervous System
The Nervous System

... 1. Some of the messages are excitatory (i.e. they tell the neuron to “fire”) while others may be inhibitory (i.e. they tell the neuron not to fire). 2. Whether or not a neuron “fires” off an action potential at any particular instant depends on its ability to integrate these multiple positive and ne ...
Human Biology Human Body Systems Nervous System
Human Biology Human Body Systems Nervous System

... Relay information from sensory neurons to motor neurons . Motor Neuron Stimulate muscles or glands in effector organs to cause a response. ...
Power Point
Power Point

... Neurotransmitters of the peripheral nervous system are excitory – increase in permeability of affected membrane for sodium ions. Acetylcholine is the neurotransmitter for cranial, spinal, and parasympathetic divisions of the autonomic nervous system. Preganglionic transmitter for the sympathetic div ...
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Neurotransmitter

Neurotransmitters are endogenous chemicals that enable neurotransmission. They transmit signals across a chemical synapse, such as in a neuromuscular junction, from one neuron (nerve cell) to another ""target"" neuron, muscle cell, or gland cell. Neurotransmitters are released from synaptic vesicles in synapses into the synaptic cleft, where they are received by receptors on other synapses. Many neurotransmitters are synthesized from simple and plentiful precursors such as amino acids, which are readily available from the diet and only require a small number of biosynthetic steps to convert them. Neurotransmitters play a major role in shaping everyday life and functions. Their exact numbers are unknown but more than 100 chemical messengers have been identified.
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