What is the structure of the spinal cord?
... that receives contacts from other neurons. Terminal buttons (axon terminals): Button-like endings on axon branches that contain chemicals for communication between cells (i.e., neurotransmitters). ...
... that receives contacts from other neurons. Terminal buttons (axon terminals): Button-like endings on axon branches that contain chemicals for communication between cells (i.e., neurotransmitters). ...
Nervous Tissue
... Cell inclusion of the nerve cells: Glycogen granules are important for the function of the nerve cell. Melanin pigments may be present in some nerve cells. Yellowish lipofuscin granules are present & increase in old ...
... Cell inclusion of the nerve cells: Glycogen granules are important for the function of the nerve cell. Melanin pigments may be present in some nerve cells. Yellowish lipofuscin granules are present & increase in old ...
Nerve tissue
... • the tracts of the brain (oligodendrocytes) • peripheral nerves (Schwann cells) ...
... • the tracts of the brain (oligodendrocytes) • peripheral nerves (Schwann cells) ...
structure-function-of
... • Dendrites – (several) receive nerve impulses and pass them onto the cell body • Myelin Sheath - fatty material which surrounds the axon which: – Insulates the axon and – Increases speed of conduction from node to node ...
... • Dendrites – (several) receive nerve impulses and pass them onto the cell body • Myelin Sheath - fatty material which surrounds the axon which: – Insulates the axon and – Increases speed of conduction from node to node ...
The Nervous System The Nervous System Functions of the Nervous
... Works through rapid and specific electrical and chemical signals to produce immediate responses ...
... Works through rapid and specific electrical and chemical signals to produce immediate responses ...
SChapter 12
... that is usually caused by neurotransmitters. 5) Response of postsynaptic cell can vary depending on the response of the receptor that was stimulated *see fig. 12-7 for an overview of these important processes* ▪Transmembrane Potential- three important concepts regarding the transmembrane potential: ...
... that is usually caused by neurotransmitters. 5) Response of postsynaptic cell can vary depending on the response of the receptor that was stimulated *see fig. 12-7 for an overview of these important processes* ▪Transmembrane Potential- three important concepts regarding the transmembrane potential: ...
Nervous System
... Action Potential Useful Terms Hyperpolarization: An increase of the magnitude of membrane potential by becoming more negative. This is caused by K+ channels to opening up. ...
... Action Potential Useful Terms Hyperpolarization: An increase of the magnitude of membrane potential by becoming more negative. This is caused by K+ channels to opening up. ...
the nervous system
... 4. Sodium ions diffuse inward, depolarizing the membrane 5. Potassium channels open 6. Potassium ions diffuse outward, repolarizing the membrane 7. The resulting action potential causes a local bioelectric current that stimulates adjacent portions of the membrane. 8. Wave of action potentials travel ...
... 4. Sodium ions diffuse inward, depolarizing the membrane 5. Potassium channels open 6. Potassium ions diffuse outward, repolarizing the membrane 7. The resulting action potential causes a local bioelectric current that stimulates adjacent portions of the membrane. 8. Wave of action potentials travel ...
5-2_NeurotransmRelease_BenseM
... neurons, and that are released from the cells, act via specific receptors, coupled to the membrane of postsynaptic target, structure and modify the electric and metabolic conditions of the affected cells. Main stages of neurotransmitter release: 1. When the action potential comes down the axon and r ...
... neurons, and that are released from the cells, act via specific receptors, coupled to the membrane of postsynaptic target, structure and modify the electric and metabolic conditions of the affected cells. Main stages of neurotransmitter release: 1. When the action potential comes down the axon and r ...
Action Potentials are - Winona State University
... Once initiated, action potentials can be transmitted slowly or rapidly: 1) Slowly: regular conduction of AP along unmyelinated neurons 2) Very Rapidly: saltatory (jumping) conduction of AP between Nodes of Ranvier (exposed membrane) on myelinated neurons! ...
... Once initiated, action potentials can be transmitted slowly or rapidly: 1) Slowly: regular conduction of AP along unmyelinated neurons 2) Very Rapidly: saltatory (jumping) conduction of AP between Nodes of Ranvier (exposed membrane) on myelinated neurons! ...
axon
... • Myelin sheath – whitish lipoprotein that surrounds and insulates the axon (nerve fiber) • Neurilamma - external layer containing bulk of cytoplasm with nucleus and organelles Schwann cell ...
... • Myelin sheath – whitish lipoprotein that surrounds and insulates the axon (nerve fiber) • Neurilamma - external layer containing bulk of cytoplasm with nucleus and organelles Schwann cell ...
Nervous System II – Neurons
... Non-neuronal cells; the glue of the nervous system Form the ________________________. Fatty layer formed around the ______________ of a neuron. Helps ______________ the speed at which impulses propagate along the axon because the impulses can hop between the _______________________________. ______ ...
... Non-neuronal cells; the glue of the nervous system Form the ________________________. Fatty layer formed around the ______________ of a neuron. Helps ______________ the speed at which impulses propagate along the axon because the impulses can hop between the _______________________________. ______ ...
Neuron (Nerve Cell)
... the Axon • Whitish, fatty protein layer • Serves to protect & electrically insulate axon • Increases the speed of transmission of nerve impulses (up to 150 times faster) • Only associated with axons, not dendrites ...
... the Axon • Whitish, fatty protein layer • Serves to protect & electrically insulate axon • Increases the speed of transmission of nerve impulses (up to 150 times faster) • Only associated with axons, not dendrites ...
PSYCH 2230
... 3. At -40mV the cell freaks out and there is a spike; there is a sudden shift from trying to depolarize to letting it just polarize then bouncing back. a. The voltage gated Na+ channels open and a large flow of + ions come in. b. The cell goes positive in charge, then it regulates itself again. c. S ...
... 3. At -40mV the cell freaks out and there is a spike; there is a sudden shift from trying to depolarize to letting it just polarize then bouncing back. a. The voltage gated Na+ channels open and a large flow of + ions come in. b. The cell goes positive in charge, then it regulates itself again. c. S ...
Nerve Cells and Electrical Signaling
... your discussion a description of equilibrium potential. 5) Several ions are responsible for resting membrane potential. Describe the forces that determine resting membrane potential. 6) Graded potentials develop in the cell body of neurons as well as in sensory receptor cells. In order for sensory i ...
... your discussion a description of equilibrium potential. 5) Several ions are responsible for resting membrane potential. Describe the forces that determine resting membrane potential. 6) Graded potentials develop in the cell body of neurons as well as in sensory receptor cells. In order for sensory i ...
Node of Ranvier
The nodes of Ranvier also known as myelin sheath gaps, are the gaps (approximately 1 micrometer in length) formed between the myelin sheaths generated by different cells. A myelin sheath is a many-layered coating, largely composed of a fatty substance called myelin, that wraps around the axon of a neuron and very efficiently insulates it. At nodes of Ranvier, the axonal membrane is uninsulated and, therefore, capable of generating electrical activity.