Synapses and neurotransmitters
... • Allows flow of ions from one neuron to another • Bi directional • Used when you need very fast reaction, say for defensive beahviour, that sort of thing • No receptor or binding site, but a connexon ...
... • Allows flow of ions from one neuron to another • Bi directional • Used when you need very fast reaction, say for defensive beahviour, that sort of thing • No receptor or binding site, but a connexon ...
Biological Bases of Behavior : Quiz 1
... Which of the following is NOT a function of glial cells? a. Removing physical debris in brain. b. Conducting action potentials. c. Physical support of neurons. d. Providing nourishment to neurons. ...
... Which of the following is NOT a function of glial cells? a. Removing physical debris in brain. b. Conducting action potentials. c. Physical support of neurons. d. Providing nourishment to neurons. ...
General_Psychology_files/Chapter Two Part One2014 - K-Dub
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
Chapter Two Part One - K-Dub
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
Chapter Two Part One PPT - K-Dub
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
... Oversupply linked to schizophrenia; undersupply linked to tremors and decreased mobility in Parkinson’s disease and ADHD ...
Nervous System
... 1. Action potential arrives at axon terminal of presynaptic neuron 2. Synaptic vesicles rupture, releasing neurotransmitter into synapse 3. Neurotransmitter diffuses across synapse & binds to receptor protein on postsynaptic cell 4. Postsynaptic cell is excited or inhibited 5. Neurotransmitter in sy ...
... 1. Action potential arrives at axon terminal of presynaptic neuron 2. Synaptic vesicles rupture, releasing neurotransmitter into synapse 3. Neurotransmitter diffuses across synapse & binds to receptor protein on postsynaptic cell 4. Postsynaptic cell is excited or inhibited 5. Neurotransmitter in sy ...
Autonomic Nervous System ANS - Anderson School District One
... αlpha & βeta Receptors • α1 & β1 produce excitation when activated • α2 & β2 receptors cause inhibition of effector tissues • β3 found only on cells of brown adipose where activation causes thermogenesis (heat production) ...
... αlpha & βeta Receptors • α1 & β1 produce excitation when activated • α2 & β2 receptors cause inhibition of effector tissues • β3 found only on cells of brown adipose where activation causes thermogenesis (heat production) ...
Nervous System
... 1. Action potential arrives at axon terminal of presynaptic neuron 2. Synaptic vesicles rupture, releasing neurotransmitter into synapse 3. Neurotransmitter diffuses across synapse & binds to receptor protein on postsynaptic cell 4. Postsynaptic cell is excited or inhibited 5. Neurotransmitter in sy ...
... 1. Action potential arrives at axon terminal of presynaptic neuron 2. Synaptic vesicles rupture, releasing neurotransmitter into synapse 3. Neurotransmitter diffuses across synapse & binds to receptor protein on postsynaptic cell 4. Postsynaptic cell is excited or inhibited 5. Neurotransmitter in sy ...
Synaptic Transmission
... message and can be inhibitory. When they bind to the post-synaptic neuron, they let potassium out instead of sodium in, which makes the neuron even more negative! ...
... message and can be inhibitory. When they bind to the post-synaptic neuron, they let potassium out instead of sodium in, which makes the neuron even more negative! ...
a positive electrical signal
... receives electrical signals and releases chemical signals out of the neuron ...
... receives electrical signals and releases chemical signals out of the neuron ...
Chapter 48: The Nervous System
... Depolarization: Na+ channels open & Na+ flows into neuron reversing polarity Re-polarization: K+ ions allowed into neuron as Na+ is blocked Refractory: brief period of time when cell can not be stimulated to carry an impulse ...
... Depolarization: Na+ channels open & Na+ flows into neuron reversing polarity Re-polarization: K+ ions allowed into neuron as Na+ is blocked Refractory: brief period of time when cell can not be stimulated to carry an impulse ...
Nervous System Function
... Myelinated neurons allow action potentials to ‘jump’ between unmyelinated gaps (Node of Ranvier) along the neuron Action potential and nerve impulse are faster Myelin sheath acts as insulation prevents depolarization Nodes of Ranvier are not insulated and can depolarize as a result ...
... Myelinated neurons allow action potentials to ‘jump’ between unmyelinated gaps (Node of Ranvier) along the neuron Action potential and nerve impulse are faster Myelin sheath acts as insulation prevents depolarization Nodes of Ranvier are not insulated and can depolarize as a result ...
ch 48 clicker questions
... The use of organophosphate pesticides that inhibit acetylcholinesterase, an enzyme that breaks down acetylcholine, could cause skeletal muscle cells to a) undergo more graded depolarizations, because acetylcholine would remain in the synaptic cleft longer. b) undergo more graded hyperpolarizations, ...
... The use of organophosphate pesticides that inhibit acetylcholinesterase, an enzyme that breaks down acetylcholine, could cause skeletal muscle cells to a) undergo more graded depolarizations, because acetylcholine would remain in the synaptic cleft longer. b) undergo more graded hyperpolarizations, ...
Lecture_31_2014_noquiz
... and a long axon that forms synapses with other neurons. Also called a nerve cell. • Nerve = A long, tough strand of nervous tissue typically containing thousands of neurons wrapped in connective tissue; carries impulses between the central nervous system and some other part of the body. ...
... and a long axon that forms synapses with other neurons. Also called a nerve cell. • Nerve = A long, tough strand of nervous tissue typically containing thousands of neurons wrapped in connective tissue; carries impulses between the central nervous system and some other part of the body. ...
The Nervous System
... of the brain; is divided into lobes -frontal lobe is important in voluntary motor function, motivation, aggression, mood, and smell reception -parietal lobe receives and evaluates most sensory information -occipital lobe receives and integrates visual input -temporal lobe evaluates smells and sounds ...
... of the brain; is divided into lobes -frontal lobe is important in voluntary motor function, motivation, aggression, mood, and smell reception -parietal lobe receives and evaluates most sensory information -occipital lobe receives and integrates visual input -temporal lobe evaluates smells and sounds ...
13. Electrochemical Impulse
... Electrochemical Impulse It has long been known that electrical impulses are present in living organisms, but it is only within the last century that we have understood how and why neurons transmit electricity These impulses are generated using uneven concentrations of ions inside the neuron compared ...
... Electrochemical Impulse It has long been known that electrical impulses are present in living organisms, but it is only within the last century that we have understood how and why neurons transmit electricity These impulses are generated using uneven concentrations of ions inside the neuron compared ...
CS 256: Neural Computation Lecture Notes
... – Synaptic/receptor potentials are graded, sustained and local. They are usually stimulated by neurotransmitters. (The stronger the stimulus, the larger the potential.) They add in an quasilinear manner. – Action potentials, a transient spike that can propagate along the entire length of an axon (1 ...
... – Synaptic/receptor potentials are graded, sustained and local. They are usually stimulated by neurotransmitters. (The stronger the stimulus, the larger the potential.) They add in an quasilinear manner. – Action potentials, a transient spike that can propagate along the entire length of an axon (1 ...
bioii ch10 ppt
... gastrointestinal tract, platelets and the central nervous system. This chemical is also known as the “happiness hormone”, because it arouses feelings of pleasure and well-being. Low levels of serotonin are associated with increased carbohydrate cravings, depression, sleep deprivations and hypersensi ...
... gastrointestinal tract, platelets and the central nervous system. This chemical is also known as the “happiness hormone”, because it arouses feelings of pleasure and well-being. Low levels of serotonin are associated with increased carbohydrate cravings, depression, sleep deprivations and hypersensi ...
Document
... • Resting muscle contracts random motor units – Constant tension created on tendon – Resting tension – muscle tone ...
... • Resting muscle contracts random motor units – Constant tension created on tendon – Resting tension – muscle tone ...
CHAPTER 10
... For a very short time following passage of a nerve impulse, a threshold stimulus will not trigger another impulse on an axon. This brief period is known as the _______________________________ period. See table 10.3 for the steps involved in impulse conduction (page 373). ...
... For a very short time following passage of a nerve impulse, a threshold stimulus will not trigger another impulse on an axon. This brief period is known as the _______________________________ period. See table 10.3 for the steps involved in impulse conduction (page 373). ...
How is the Nervous System Organized? Class Objectives:
... The neurotransmitters are like pieces of a puzzle, and the receptor sites on the next neuron are differently shaped spaces. ‐ The chemical is almost immediately destroyed or reabsorbed (reuptake) ...
... The neurotransmitters are like pieces of a puzzle, and the receptor sites on the next neuron are differently shaped spaces. ‐ The chemical is almost immediately destroyed or reabsorbed (reuptake) ...
ppt
... 2. Outine the steps in chemical synaptic transmission and predict changes in the efficacy of transmission when the system is perturbed (e.g. changes in ion concentrations or addition of drugs). 3. Explain the role of the neurotransmitter receptor in determining a neurotransmitter’s effect on the p ...
... 2. Outine the steps in chemical synaptic transmission and predict changes in the efficacy of transmission when the system is perturbed (e.g. changes in ion concentrations or addition of drugs). 3. Explain the role of the neurotransmitter receptor in determining a neurotransmitter’s effect on the p ...
FA15 Lec23 Ion Channel
... 1. Ion Channels are membrane-bound proteins Involved in communication 2. 3 types, voltage, ligand and mechanicallysensitive 3. Nerves: a. They rely on “batteries” —constant source of voltage b. Voltage generated through K+/Na+ exchange. c. (Next time:) On/Off is digital, not analog–have transistors ...
... 1. Ion Channels are membrane-bound proteins Involved in communication 2. 3 types, voltage, ligand and mechanicallysensitive 3. Nerves: a. They rely on “batteries” —constant source of voltage b. Voltage generated through K+/Na+ exchange. c. (Next time:) On/Off is digital, not analog–have transistors ...
Molecular neuroscience
Molecular neuroscience is a branch of neuroscience that observes concepts in molecular biology applied to the nervous systems of animals. The scope of this subject primarily pertains to a reductionist view of neuroscience, considering topics such as molecular neuroanatomy, mechanisms of molecular signaling in the nervous system, the effects of genetics on neuronal development, and the molecular basis for neuroplasticity and neurodegenerative diseases. As with molecular biology, molecular neuroscience is a relatively new field that is considerably dynamic.