Geen diatitel
... Bachmann's bundle (interatrial tract) comes off the anterior internodal tract leading to the left atrium. The impulse passes from the SA node in an organized manner through specialized conducting tracts in the atria to activate first the right and then the left atrium. Passage of the impulse is dela ...
... Bachmann's bundle (interatrial tract) comes off the anterior internodal tract leading to the left atrium. The impulse passes from the SA node in an organized manner through specialized conducting tracts in the atria to activate first the right and then the left atrium. Passage of the impulse is dela ...
Special Senses
... -contains hearing transducers (hair cells) -sits on basilar membrane -hair cells stick into tectorial membrane -movement of the hair cells creates AP’s ...
... -contains hearing transducers (hair cells) -sits on basilar membrane -hair cells stick into tectorial membrane -movement of the hair cells creates AP’s ...
Basic Neuroscience Series: Introduction and Series Overview
... stains 2. Golgi method 3. Fluorescence labelling 4. Electron microscopy • Cell types: neurons, glia, ...
... stains 2. Golgi method 3. Fluorescence labelling 4. Electron microscopy • Cell types: neurons, glia, ...
Nervous System Neurons And Synapses
... 20. impulses; presence of ion channels and resting membrane potential (RMP) 21. little; ion; leakage; voltage-gated 22. polarized; negative; -70 mV; Fig 9.2 shown below 23. K+ 24. large; Their size prohibits them from leaving the cell. 25. Na+/K+ pump; active; Na+; ATP 26. negativity inside the cell ...
... 20. impulses; presence of ion channels and resting membrane potential (RMP) 21. little; ion; leakage; voltage-gated 22. polarized; negative; -70 mV; Fig 9.2 shown below 23. K+ 24. large; Their size prohibits them from leaving the cell. 25. Na+/K+ pump; active; Na+; ATP 26. negativity inside the cell ...
the physiological approach
... Na+ channels inactivate (absolute refractory period) – completely unresponsive to a second stimulus Potassium flows out of the axon ...
... Na+ channels inactivate (absolute refractory period) – completely unresponsive to a second stimulus Potassium flows out of the axon ...
here - WPI
... an axon, prompting the release of neurotransmitters. These chemicals, which act as the brain’s messengers, travel from their point of release at nerve terminals across the synapse. When they reach another cell, which is generally a neuron but could also be a gland or muscle cell, they bind to recept ...
... an axon, prompting the release of neurotransmitters. These chemicals, which act as the brain’s messengers, travel from their point of release at nerve terminals across the synapse. When they reach another cell, which is generally a neuron but could also be a gland or muscle cell, they bind to recept ...
Introduction to Cellular and Molecular Neurobiology (and what it`s for).
... Refers to signals that reach the neuronal cell body (e.g., vie the dendrites). Efferent = “leaving from” ...
... Refers to signals that reach the neuronal cell body (e.g., vie the dendrites). Efferent = “leaving from” ...
Feb. 11
... What differentiates neurons from other animal cells? • Neurons specialized to process and transmit information – Electrical signals can be in the form… • Action Potentials (“all or none”) • Local Potentials (graded, variable amplitude) ...
... What differentiates neurons from other animal cells? • Neurons specialized to process and transmit information – Electrical signals can be in the form… • Action Potentials (“all or none”) • Local Potentials (graded, variable amplitude) ...
Nervous System: Levels of Organization Review and
... Distinguish between white matter and gray matter. Describe the transmembrane potential or voltage across the cell membrane and how it is measured. Contrast the relative concentrations of ions in body solutions inside and outside of a cell (sodium, potassium, calcium and chloride ions). Explain how f ...
... Distinguish between white matter and gray matter. Describe the transmembrane potential or voltage across the cell membrane and how it is measured. Contrast the relative concentrations of ions in body solutions inside and outside of a cell (sodium, potassium, calcium and chloride ions). Explain how f ...
Lecture_31_2014_noquiz
... The sciatic nerve is this huge nerve that leaves your lower back (and spinal cord) and runs the length of your leg. There are many different types of neurons. Some are myelinated, some are not. Smaller nerves branch off of the sciatic nerve. The sciatic nerve responsible for innervating muscles, ski ...
... The sciatic nerve is this huge nerve that leaves your lower back (and spinal cord) and runs the length of your leg. There are many different types of neurons. Some are myelinated, some are not. Smaller nerves branch off of the sciatic nerve. The sciatic nerve responsible for innervating muscles, ski ...
Nervous System
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
The Eye
... Stimulus detection – a specialized sensory neuron Reception – where neurons receive information from the sensory neurons Integration – where information from receivers is processed ...
... Stimulus detection – a specialized sensory neuron Reception – where neurons receive information from the sensory neurons Integration – where information from receivers is processed ...
Na+ - cloudfront.net
... In what order are signals relayed from one neuron to the next? What feature of the NS allows your body to rapidly respond to the environment? What 3 neurons are involved in the process from #7 above? What is an action potential? What is the name of the chemical that is released from synaptic termina ...
... In what order are signals relayed from one neuron to the next? What feature of the NS allows your body to rapidly respond to the environment? What 3 neurons are involved in the process from #7 above? What is an action potential? What is the name of the chemical that is released from synaptic termina ...
Nervous System
... and is called the axon. The purpose of the axon is to transmit an electro-chemical signal to other neurons, sometimes over a considerable distance. In the neurons that make up the nerves running from the spinal cord to your toes, the axons can be as long as three feet! ...
... and is called the axon. The purpose of the axon is to transmit an electro-chemical signal to other neurons, sometimes over a considerable distance. In the neurons that make up the nerves running from the spinal cord to your toes, the axons can be as long as three feet! ...
Neuroglia - wsscience
... Chemical gradients- Drive sodium ions into the cell. Electrical gradients- Potassium ions leave the cytoplasm more rapidly than sodium ions enter. Current- A movement of charges to eliminate a potential difference. Resistance- A measure of how much the membrane restricts ion movement. Elec ...
... Chemical gradients- Drive sodium ions into the cell. Electrical gradients- Potassium ions leave the cytoplasm more rapidly than sodium ions enter. Current- A movement of charges to eliminate a potential difference. Resistance- A measure of how much the membrane restricts ion movement. Elec ...
Chapter 04: The Action Potential
... Membrane Potential (potential difference across the plasma membrane) at which the net flow of an ion type = zero The number of ions moving into the cell = the number of ions moving out of the cell for a particular species of ion ...
... Membrane Potential (potential difference across the plasma membrane) at which the net flow of an ion type = zero The number of ions moving into the cell = the number of ions moving out of the cell for a particular species of ion ...
AP Biology- The Cell / Plasma Membrane and Cellular
... interact well with polar molecules such as water, but are repelled by nonpolar molecules such as the fatty acid portion of the bilayer. Therefore they need assistance from channel proteins so that they can get into the cell. o Ion channels- have a hydrated interior that spans the membrane so that th ...
... interact well with polar molecules such as water, but are repelled by nonpolar molecules such as the fatty acid portion of the bilayer. Therefore they need assistance from channel proteins so that they can get into the cell. o Ion channels- have a hydrated interior that spans the membrane so that th ...
Modeling and interpretation of extracellular potentials
... Forward modelling of spikes What does an action potential look like as seen by an extracellular electrode? [neuron model from Mainen & Sejnowski, 1996] From Henze et al (2000): ...
... Forward modelling of spikes What does an action potential look like as seen by an extracellular electrode? [neuron model from Mainen & Sejnowski, 1996] From Henze et al (2000): ...
kumc 05 nervous system review student
... Branches off the cell body that carry information to the cell body. Usually several to many. Relatively short. Often branched. Have receptors for neurotransmitters. Conduct local potentials. ...
... Branches off the cell body that carry information to the cell body. Usually several to many. Relatively short. Often branched. Have receptors for neurotransmitters. Conduct local potentials. ...
Chapter 7
... – Carries electrical impulse away from cell body – May be covered by Schwann cells • Forms discontinuous myelin sheath along length of axon ...
... – Carries electrical impulse away from cell body – May be covered by Schwann cells • Forms discontinuous myelin sheath along length of axon ...
Nervous System Cells
... This process continues as a chain-reaction along the axon. The influx of sodium depolarizes the axon, and the ourflow of potassium repolarizes the axon. ...
... This process continues as a chain-reaction along the axon. The influx of sodium depolarizes the axon, and the ourflow of potassium repolarizes the axon. ...
Your Name Here______________________________
... 15. Dopamine, histamine, norepinephrine and serotonin are in the class of neurotransmitters called a. neuropeptides b. amino acids c. neuromodulators d. monoamines 16. Immune protection of the CNS is in part based on the activity of a. astrocytes b. oligodendrocytes c. ependymal cells d. microglia ...
... 15. Dopamine, histamine, norepinephrine and serotonin are in the class of neurotransmitters called a. neuropeptides b. amino acids c. neuromodulators d. monoamines 16. Immune protection of the CNS is in part based on the activity of a. astrocytes b. oligodendrocytes c. ependymal cells d. microglia ...
Electrophysiology
Electrophysiology (from Greek ἥλεκτρον, ēlektron, ""amber"" [see the etymology of ""electron""]; φύσις, physis, ""nature, origin""; and -λογία, -logia) is the study of the electrical properties of biological cells and tissues. It involves measurements of voltage change or electric current on a wide variety of scales from single ion channel proteins to whole organs like the heart. In neuroscience, it includes measurements of the electrical activity of neurons, and particularly action potential activity. Recordings of large-scale electric signals from the nervous system such as electroencephalography, may also be referred to as electrophysiological recordings.