Anatomy and Physiology 121: The Nervous System General
... Impulses travel from dendrite on cell body through axon to presynaptic terminal Axons secrete neurotransmitter from synaptic vesicles in knobs on axon when receives an impulse When transmitter reaches postsynaptic neuron it triggers an synaptic potential Neurotransmitter Substances ~ 50 neur ...
... Impulses travel from dendrite on cell body through axon to presynaptic terminal Axons secrete neurotransmitter from synaptic vesicles in knobs on axon when receives an impulse When transmitter reaches postsynaptic neuron it triggers an synaptic potential Neurotransmitter Substances ~ 50 neur ...
Summary Sodium pump.
... axon and discharge their contents into the synaptic cleft. Released neurotransmitters diffuse across the cleft, and bind to receptors on the other cell's membrane, causing ion channels on that cell to open. Some neurotransmitters cause an action potential, others are inhibitory. ...
... axon and discharge their contents into the synaptic cleft. Released neurotransmitters diffuse across the cleft, and bind to receptors on the other cell's membrane, causing ion channels on that cell to open. Some neurotransmitters cause an action potential, others are inhibitory. ...
Document
... SENDING THE SIGNAL 1. Depolarization of the presynaptic cell membrane by an action potential pushes a wave (Na+ ions rushing in/K+ ions rushing out) along the axon to the presynaptic terminal. 2. This opens voltage–gated Ca2+ channels in the membrane, triggering an influx of Ca2+ into the presynapti ...
... SENDING THE SIGNAL 1. Depolarization of the presynaptic cell membrane by an action potential pushes a wave (Na+ ions rushing in/K+ ions rushing out) along the axon to the presynaptic terminal. 2. This opens voltage–gated Ca2+ channels in the membrane, triggering an influx of Ca2+ into the presynapti ...
Brain Notes - Cloudfront.net
... different neurons, which provide information throughout the nervous system. Within a single neuron, information travels through electrical signals, but when information is transmitted from one neuron to the next neuron, the transmission is considered ‘chemical’. For two neurons to communicate neurot ...
... different neurons, which provide information throughout the nervous system. Within a single neuron, information travels through electrical signals, but when information is transmitted from one neuron to the next neuron, the transmission is considered ‘chemical’. For two neurons to communicate neurot ...
The Nervous System
... The Spinal Cord and Reflexes (simple, automatic response to sensory stimuli) ...
... The Spinal Cord and Reflexes (simple, automatic response to sensory stimuli) ...
Nervous and Endocrine System
... Dendrites – receive the nerve impulse Nucleus – controls all activities of the cell Axon Terminals release neurotransmitters into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrica ...
... Dendrites – receive the nerve impulse Nucleus – controls all activities of the cell Axon Terminals release neurotransmitters into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrica ...
Transmission at the Synapse and the
... o There are 3 mechanisms of presynaptic inhibition: Activation of chloride channels in the PRE-synaptic neuron – that hyperpolarizes the excitatory nerve ending and thus reduced the magnitude of excitatory action potential; and that in turn reduces the amount of calcium that enters the excitatory ...
... o There are 3 mechanisms of presynaptic inhibition: Activation of chloride channels in the PRE-synaptic neuron – that hyperpolarizes the excitatory nerve ending and thus reduced the magnitude of excitatory action potential; and that in turn reduces the amount of calcium that enters the excitatory ...
Brain Jeopardy
... from the main cell body and carries information into the neuron – it receives input ...
... from the main cell body and carries information into the neuron – it receives input ...
Axons: The cost of communication in the brain | eLife
... To use an analogy that may soon be redundant in the era of cell phones, axons are to neurons what telephone cables are to land-line phones. Like telephone cables, axons transmit ...
... To use an analogy that may soon be redundant in the era of cell phones, axons are to neurons what telephone cables are to land-line phones. Like telephone cables, axons transmit ...
Objectives included for the test File
... 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. Draw and label a diagram of the structure of a motor neuron. State that nerve impulses are conducted from receptors to t ...
... 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. Draw and label a diagram of the structure of a motor neuron. State that nerve impulses are conducted from receptors to t ...
Word version - World Book Encyclopedia
... Number the statements below in the correct order to show how you feel pain when you stub your toe? The brain decodes the signals as a sight, sound, smell, taste, touch, or other sensation. The message travels along the axon as an electrical impulse. Messages move from the brain through nerves and ou ...
... Number the statements below in the correct order to show how you feel pain when you stub your toe? The brain decodes the signals as a sight, sound, smell, taste, touch, or other sensation. The message travels along the axon as an electrical impulse. Messages move from the brain through nerves and ou ...
The Nervous System Activity Sheet
... Number the statements below in the correct order to show how you feel pain when you stub your toe? ...
... Number the statements below in the correct order to show how you feel pain when you stub your toe? ...
A1992HX83800001
... V. Gerasimov and V. Maisky—who also were looking for more simple structures to study nerve cell functions. We turned to snails (Helix pomatia), which are very numerous around Kiev. They have beautiful neurons in their transparent ganglia, easily identifiable under a microscope and just ready for the ...
... V. Gerasimov and V. Maisky—who also were looking for more simple structures to study nerve cell functions. We turned to snails (Helix pomatia), which are very numerous around Kiev. They have beautiful neurons in their transparent ganglia, easily identifiable under a microscope and just ready for the ...
Slide ()
... Short-term sensitization of the gill-withdrawal reflex in Aplysia. A. Sensitization of the gill-withdrawal reflex is produced by applying a noxious stimulus to another part of the body, such as the tail. A shock to the tail activates tail sensory neurons that excite facilitating (modulatory) interne ...
... Short-term sensitization of the gill-withdrawal reflex in Aplysia. A. Sensitization of the gill-withdrawal reflex is produced by applying a noxious stimulus to another part of the body, such as the tail. A shock to the tail activates tail sensory neurons that excite facilitating (modulatory) interne ...
The Nervous System
... • All nerves are made of neurons. Neurons are nerve cells that send electrical messages around the body. Neurons transmit electrical messages to and from the CNS, called impulses. ...
... • All nerves are made of neurons. Neurons are nerve cells that send electrical messages around the body. Neurons transmit electrical messages to and from the CNS, called impulses. ...
The Brain - Science Leadership Academy
... • The cerebrum is responsible for 85% of the weight of the brain. ...
... • The cerebrum is responsible for 85% of the weight of the brain. ...
Module 3
... information processing throughout the cortex and especially memory formation in the hippocampus. Both schizophrenia and Alzheimer’s may involve glutamate receptors. ...
... information processing throughout the cortex and especially memory formation in the hippocampus. Both schizophrenia and Alzheimer’s may involve glutamate receptors. ...
The Synapse
... cause the release of a chemical messenger from a storage vesicle in the axon terminal. The chemical messenger (called a neurotransmitter) travels across a synapse to bind to a postsynaptic receptor protein. The act of binding to the receptor protein sets in motion a series of events which eventually ...
... cause the release of a chemical messenger from a storage vesicle in the axon terminal. The chemical messenger (called a neurotransmitter) travels across a synapse to bind to a postsynaptic receptor protein. The act of binding to the receptor protein sets in motion a series of events which eventually ...
BOX 5.2 GOLDMAN-HODGKIN-KATZ EQUATION An equation
... An equation developed by Goldman and later used by Alan Hodgkin and Bernard Katz describes the steady-state membrane potential for a given set of ionic concentrations inside and outside the cell and the relative permeabilities of the membrane to each of those ions: ...
... An equation developed by Goldman and later used by Alan Hodgkin and Bernard Katz describes the steady-state membrane potential for a given set of ionic concentrations inside and outside the cell and the relative permeabilities of the membrane to each of those ions: ...
Application Six - Sheila Tooker Impey
... Although the blood clot was on the right side of the brain, the patient’s left side was affected because one side of the brain controls the opposite side of the body. A stroke affecting one side of the brain will result in neurological complications on the side of the body it affects (American Heart ...
... Although the blood clot was on the right side of the brain, the patient’s left side was affected because one side of the brain controls the opposite side of the body. A stroke affecting one side of the brain will result in neurological complications on the side of the body it affects (American Heart ...
The Nervous System
... How does a nerve impulse travel? • Combined waves travel down neuron – wave of opening ion channels moves down neuron – signal moves in one direction • flow of K+ out of cell stops activation of Na+ channels in ...
... How does a nerve impulse travel? • Combined waves travel down neuron – wave of opening ion channels moves down neuron – signal moves in one direction • flow of K+ out of cell stops activation of Na+ channels in ...