PowerPoint Slide Set Westen Psychology 2e
... NTs are stored within vesicles of the presynaptic cell NTs are released in response to the action potential sweeping along the presynaptic membrane Transmitter molecules diffuse across the synaptic cleft and bind to postsynaptic receptors Receptor binding opens or closes ion channels: • NA c ...
... NTs are stored within vesicles of the presynaptic cell NTs are released in response to the action potential sweeping along the presynaptic membrane Transmitter molecules diffuse across the synaptic cleft and bind to postsynaptic receptors Receptor binding opens or closes ion channels: • NA c ...
Membrane Biophysics and Synaptic Physiology
... classical biophysical transporter mechanisms •Unusual mechanisms of transport •Gap ...
... classical biophysical transporter mechanisms •Unusual mechanisms of transport •Gap ...
Bad Fish - Groch Biology
... – Movement of K+ increases the positive charge outside the membrane relative to the inside. ...
... – Movement of K+ increases the positive charge outside the membrane relative to the inside. ...
lecture #6
... 1. Leakage (non-gated) or Resting channels: are always open, contribute to the resting potential -nerve cells have more K+ than Na+ leakage channels -as a result, membrane permeability to K+ is higher -so K+ leakage is the main factor in setting the resting membrane potential 2. Gated channels: chan ...
... 1. Leakage (non-gated) or Resting channels: are always open, contribute to the resting potential -nerve cells have more K+ than Na+ leakage channels -as a result, membrane permeability to K+ is higher -so K+ leakage is the main factor in setting the resting membrane potential 2. Gated channels: chan ...
![[j26]Chapter 7#](http://s1.studyres.com/store/data/009746692_1-cea296eaa3596328a1d6ed73629d44e9-300x300.png)
[j26]Chapter 7#
... This chapter begins a four-chapter unit (chapters 7 through 10) on the basic structure and function of the nervous system. The electrical membrane potential of a neuron at rest, introduced in the last chapter, now “comes to life” as appropriate stimuli alter the permeability of the plasma membrane t ...
... This chapter begins a four-chapter unit (chapters 7 through 10) on the basic structure and function of the nervous system. The electrical membrane potential of a neuron at rest, introduced in the last chapter, now “comes to life” as appropriate stimuli alter the permeability of the plasma membrane t ...
chapt10_holes_lecture_animation
... • A cell membrane is usually electrically charged, or polarized, so that the inside of the membrane is negatively charged with respect to the outside of the membrane (which is then positively charged). • This is as a result of unequal distribution of ions on the inside and the outside of the membran ...
... • A cell membrane is usually electrically charged, or polarized, so that the inside of the membrane is negatively charged with respect to the outside of the membrane (which is then positively charged). • This is as a result of unequal distribution of ions on the inside and the outside of the membran ...
UNIT II - Elsevier Health
... The method for measuring the membrane potential is simple in theory but often difficult in practice because of the small size of most of the fibers. Figure 5-2 shows a small pipette filled with an electrolyte solution. The pipette is impaled through the cell membrane to the interior of the fiber. Th ...
... The method for measuring the membrane potential is simple in theory but often difficult in practice because of the small size of most of the fibers. Figure 5-2 shows a small pipette filled with an electrolyte solution. The pipette is impaled through the cell membrane to the interior of the fiber. Th ...
Slide 1
... • The axon forms from the narrowing of the cell body. The region between the large cell body and the axon is the “axon hillock” ...
... • The axon forms from the narrowing of the cell body. The region between the large cell body and the axon is the “axon hillock” ...
nervous system
... 10. Describe the parts and functions of the human brain 11. Explain how injuries, illness, and surgery provide insight into the functions of the brain 12. Describe the causes, symptoms, and treatments of schizophrenia, depression, Alzheimer s disease, and Parkinson s disease ...
... 10. Describe the parts and functions of the human brain 11. Explain how injuries, illness, and surgery provide insight into the functions of the brain 12. Describe the causes, symptoms, and treatments of schizophrenia, depression, Alzheimer s disease, and Parkinson s disease ...
Take the 10-item multiple choice quiz to check
... (2) the muscle spindle is stretched (3) action potentials in sensory neurons of the muscle spindles increase (4) action potentials in alpha motor neurons of skeletal muscle fibers increase (5) skeletal muscle of the back contract a. b. c. d. e. ...
... (2) the muscle spindle is stretched (3) action potentials in sensory neurons of the muscle spindles increase (4) action potentials in alpha motor neurons of skeletal muscle fibers increase (5) skeletal muscle of the back contract a. b. c. d. e. ...
The neuron Label the following terms: Soma Axon terminal Axon
... 1. The presynaptic neuron sends neurotransmitters to postsynaptic neuron. 2. Neurotransmitters bind to receptors on the postsynaptic cell. - This action will either excite or inhibit the postsynaptic cell. - The soma becomes more positive. 3. The positive charge reaches the axon hillock. - Once the ...
... 1. The presynaptic neuron sends neurotransmitters to postsynaptic neuron. 2. Neurotransmitters bind to receptors on the postsynaptic cell. - This action will either excite or inhibit the postsynaptic cell. - The soma becomes more positive. 3. The positive charge reaches the axon hillock. - Once the ...
12-1 Chapter 12 Lecture Outline See PowerPoint Image Slides for
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
Chapter 12
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
No Slide Title
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
... – electrical potential - different concentrations of charged particles in different parts of the cell – electrical current - flow of charged particles from one point to another within the cell ...
Life: The Science of Biology, Ninth Edition
... Membrane of a Separate Sensory Cell or on a Sensory Neuron ...
... Membrane of a Separate Sensory Cell or on a Sensory Neuron ...
1 Biology 13100 Problem Set 7 Components and functions of all
... When a motor neuron releases ACh at neuromuscular junction, it binds the Nicotinic AChR, a ligand-gated cationic channels that can be blocked by toxins/drugs. The action potential spreads through the sarcolemma to the T-tubule system where a voltage-sensitive protein on T tubules (dihydropyridine re ...
... When a motor neuron releases ACh at neuromuscular junction, it binds the Nicotinic AChR, a ligand-gated cationic channels that can be blocked by toxins/drugs. The action potential spreads through the sarcolemma to the T-tubule system where a voltage-sensitive protein on T tubules (dihydropyridine re ...
Chapter Outline
... • Na+ rushes in down concentration and electrical gradients • Na+ diffuses for short distance inside membrane producing a change in voltage called a local potential ...
... • Na+ rushes in down concentration and electrical gradients • Na+ diffuses for short distance inside membrane producing a change in voltage called a local potential ...
1 Biology 13100 Problem Set 7 Components and functions of all
... When a motor neuron releases ACh at neuromuscular junction, it binds the Nicotinic AChR, a ligand-gated cationic channels that can be blocked by toxins/drugs. The action potential spreads through the sarcolemma to the T-tubule system where a voltage-sensitive protein on T tubules (dihydropyridine re ...
... When a motor neuron releases ACh at neuromuscular junction, it binds the Nicotinic AChR, a ligand-gated cationic channels that can be blocked by toxins/drugs. The action potential spreads through the sarcolemma to the T-tubule system where a voltage-sensitive protein on T tubules (dihydropyridine re ...
08 - Pierce College
... Putman/Pierce College Biol 241 08px Practice Exam/20110311 proofread/Page 10 ...
... Putman/Pierce College Biol 241 08px Practice Exam/20110311 proofread/Page 10 ...
Synaptic Transmission
... inhibitory. When they bind to the post-synaptic neuron, they let potassium out instead of sodium in, which makes the neuron even more negative! ...
... inhibitory. When they bind to the post-synaptic neuron, they let potassium out instead of sodium in, which makes the neuron even more negative! ...
Neurophysiology Worksheet
... neuron. A myleinated neuron is called white matter while a non-myleinated neuron is called grey matter. The myelin lines up on the neuron like beads. Gaps exist, called nodes of Ranvier where neuron membrane is exposed. Action potentials move across the myelin sheath by jumping from node to node in ...
... neuron. A myleinated neuron is called white matter while a non-myleinated neuron is called grey matter. The myelin lines up on the neuron like beads. Gaps exist, called nodes of Ranvier where neuron membrane is exposed. Action potentials move across the myelin sheath by jumping from node to node in ...
Bio70 Psychobiology Fall 2006 First Midterm October 12 Version A
... 35. In anatomy, the opposite of medial is: a. lateral. b. dorsal. c. ventral. d. rostral. 36. Cell bodies of sensory neurons are located in the: a. spinal cord. b. dorsal root ganglia. c. white matter. d. ventral roots. 37. Sympathetic is to ____ as parasympathetic is to ____. a. serotonin; dopamin ...
... 35. In anatomy, the opposite of medial is: a. lateral. b. dorsal. c. ventral. d. rostral. 36. Cell bodies of sensory neurons are located in the: a. spinal cord. b. dorsal root ganglia. c. white matter. d. ventral roots. 37. Sympathetic is to ____ as parasympathetic is to ____. a. serotonin; dopamin ...
THE PHYSICAL BASIS FUNCTION OF NEURONAL
... them without decrement as the result of the movement of charged particles (ions). The properties of electrical signals allow neurons to carry information rapidly and accurately to coordinate actions involving many parts, or even all, of an animal's body. All of the neurons in an organism's body, alo ...
... them without decrement as the result of the movement of charged particles (ions). The properties of electrical signals allow neurons to carry information rapidly and accurately to coordinate actions involving many parts, or even all, of an animal's body. All of the neurons in an organism's body, alo ...
Unit 1 – Nervous and Endocrine System
... Reflexes are fast b/c the brain does not have to process incoming info before reacting A reflex arc is the neural pathway that mediates a reflex action A reflex arc uses very few neurons to transmit messages Steps in a reflex arc: 1. Receptors (heat, pain, cold) initiate an impulse in a sens ...
... Reflexes are fast b/c the brain does not have to process incoming info before reacting A reflex arc is the neural pathway that mediates a reflex action A reflex arc uses very few neurons to transmit messages Steps in a reflex arc: 1. Receptors (heat, pain, cold) initiate an impulse in a sens ...
Cerebellum
... each of the different taste categories. • A given sensory neuron may be stimulated by more than 1 taste cell in # of different taste buds • One sensory fiber may not transmit information specific for only 1 category of taste • Brain interprets the pattern of stimulation with the sense of smell; so t ...
... each of the different taste categories. • A given sensory neuron may be stimulated by more than 1 taste cell in # of different taste buds • One sensory fiber may not transmit information specific for only 1 category of taste • Brain interprets the pattern of stimulation with the sense of smell; so t ...
Resting potential
The relatively static membrane potential of quiescent cells is called the resting membrane potential (or resting voltage), as opposed to the specific dynamic electrochemical phenomena called action potential and graded membrane potential.Apart from the latter two, which occur in excitable cells (neurons, muscles, and some secretory cells in glands), membrane voltage in the majority of non-excitable cells can also undergo changes in response to environmental or intracellular stimuli. In principle, there is no difference between resting membrane potential and dynamic voltage changes like action potential from a biophysical point of view: all these phenomena are caused by specific changes in membrane permeabilities for potassium, sodium, calcium, and chloride ions, which in turn result from concerted changes in functional activity of various ion channels, ion transporters, and exchangers. Conventionally, resting membrane potential can be defined as a relatively stable, ground value of transmembrane voltage in animal and plant cells.Any voltage is a difference in electric potential between two points—for example, the separation of positive and negative electric charges on opposite sides of a resistive barrier. The typical resting membrane potential of a cell arises from the separation of potassium ions from intracellular, relatively immobile anions across the membrane of the cell. Because the membrane permeability for potassium is much higher than that for other ions (disregarding voltage-gated channels at this stage), and because of the strong chemical gradient for potassium, potassium ions flow from the cytosol into the extracellular space carrying out positive charge, until their movement is balanced by build-up of negative charge on the inner surface of the membrane. Again, because of the high relative permeability for potassium, the resulting membrane potential is almost always close to the potassium reversal potential. But in order for this process to occur, a concentration gradient of potassium ions must first be set up. This work is done by the ion pumps/transporters and/or exchangers and generally is powered by ATP.In the case of the resting membrane potential across an animal cell's plasma membrane, potassium (and sodium) gradients are established by the Na+/K+-ATPase (sodium-potassium pump) which transports 2 potassium ions inside and 3 sodium ions outside at the cost of 1 ATP molecule. In other cases, for example, a membrane potential may be established by acidification of the inside of a membranous compartment (such as the proton pump that generates membrane potential across synaptic vesicle membranes).