Ch 35 PowerPoint - Damien Rutkoski
... Mimic natural chemicals in the brain such as Endorphins, which normally help to overcome sensations of pain. If the user attempts to stop taking these drugs, the body cannot produce enough of the natural endorphins that are needed to prevent the user from the uncontrollable pain and sickness that ac ...
... Mimic natural chemicals in the brain such as Endorphins, which normally help to overcome sensations of pain. If the user attempts to stop taking these drugs, the body cannot produce enough of the natural endorphins that are needed to prevent the user from the uncontrollable pain and sickness that ac ...
Muscular Disorders and Diseases
... A few hours after a person or animal dies, the joints of the body stiffen and become locked in place. This stiffening is called rigor mortis. Depending on temperature and other conditions, rigor mortis lasts approximately 72 hours. The phenomenon is caused by the skeletal muscles partially contracti ...
... A few hours after a person or animal dies, the joints of the body stiffen and become locked in place. This stiffening is called rigor mortis. Depending on temperature and other conditions, rigor mortis lasts approximately 72 hours. The phenomenon is caused by the skeletal muscles partially contracti ...
Slide 1
... •Psychotropic drugs exerts their effects by altering specific chemical processes involved in neuronal communication •Research efforts led to discovery of Neurotransmitter substances Neuroreceptors Neurochemical pathways ...
... •Psychotropic drugs exerts their effects by altering specific chemical processes involved in neuronal communication •Research efforts led to discovery of Neurotransmitter substances Neuroreceptors Neurochemical pathways ...
Cognitive neuroscience lecture
... Sodium ions are concentrated on the outside of the axon membrane. Potassium ions are concentrated on the inside of the axon membrane. Ion channels are closed. The inside of the axon membrane is more negative that is the outside. ...
... Sodium ions are concentrated on the outside of the axon membrane. Potassium ions are concentrated on the inside of the axon membrane. Ion channels are closed. The inside of the axon membrane is more negative that is the outside. ...
Key Learning Guide - City Vision University
... Digestion Respiration Glandular outputs Genital reactions Sympathetic responses ...
... Digestion Respiration Glandular outputs Genital reactions Sympathetic responses ...
Lecture #13 – Animal Nervous Systems
... ion gates allows them to send electrical signals along the extensions (dendrites and axons) Gates open and close in response to stimuli ...
... ion gates allows them to send electrical signals along the extensions (dendrites and axons) Gates open and close in response to stimuli ...
Axon - Cloudfront.net
... Impulses are able to cross the synapse to another nerve Neurotransmitter is released from a nerve’s axon terminal The dendrite of the next neuron has receptors that are stimulated by the neurotransmitter An action potential is started in the dendrite ...
... Impulses are able to cross the synapse to another nerve Neurotransmitter is released from a nerve’s axon terminal The dendrite of the next neuron has receptors that are stimulated by the neurotransmitter An action potential is started in the dendrite ...
Nerve Tissue
... • advantage of quick transmission – no delay for release and binding of neurotransmitter – Gap junctions in cardiac and smooth muscle and some neurons • disadvantage is they cannot integrate information and make decisions – ability reserved for chemical synapses in which neurons communicate by relea ...
... • advantage of quick transmission – no delay for release and binding of neurotransmitter – Gap junctions in cardiac and smooth muscle and some neurons • disadvantage is they cannot integrate information and make decisions – ability reserved for chemical synapses in which neurons communicate by relea ...
Nerve activates contraction
... • Axon endings are called synaptic terminals. • They contain neurotransmitters which conduct a signal across a synapse. • A synapse is the junction between a presynaptic and postsynaptic neuron. Synapses can be electrical or chemical. Ions carry information in electrical synapses. In chemical synap ...
... • Axon endings are called synaptic terminals. • They contain neurotransmitters which conduct a signal across a synapse. • A synapse is the junction between a presynaptic and postsynaptic neuron. Synapses can be electrical or chemical. Ions carry information in electrical synapses. In chemical synap ...
Simplified view of how a neuron sends a signal
... This story is about two cations: Na+ and K+. Initially, before the membrane is polarized (Figure 1C), there are 3 relevant conditions: (i) [Na+ ] is lower outside the cell than inside, (ii) [K+] is lower inside the cell than outside, (iii) the net charge inside and outside is the same, even though b ...
... This story is about two cations: Na+ and K+. Initially, before the membrane is polarized (Figure 1C), there are 3 relevant conditions: (i) [Na+ ] is lower outside the cell than inside, (ii) [K+] is lower inside the cell than outside, (iii) the net charge inside and outside is the same, even though b ...
Nerve tissue
... Ultrastructure of the MEP. The drawing at the upper right shows branching of a small nerve with a MEP for each muscle fiber. The structure of one of the bulbs of an end-plate is highly enlarged in the center drawing. Note that the axon terminal bud contains synaptic vesicles. The region of the musc ...
... Ultrastructure of the MEP. The drawing at the upper right shows branching of a small nerve with a MEP for each muscle fiber. The structure of one of the bulbs of an end-plate is highly enlarged in the center drawing. Note that the axon terminal bud contains synaptic vesicles. The region of the musc ...
突觸與神經訊號傳遞 - 國立交通大學開放式課程
... • The opening of ion channels in the plasma membrane converts chemical potential to electrical potential. • A neuron at resting potential contains many open K+ channels and fewer open Na+ channels; K+ significantly diffuses out of the cell. • The resulting buildup of negative charge within the neuro ...
... • The opening of ion channels in the plasma membrane converts chemical potential to electrical potential. • A neuron at resting potential contains many open K+ channels and fewer open Na+ channels; K+ significantly diffuses out of the cell. • The resulting buildup of negative charge within the neuro ...
CHAPTER10B
... www.mc.vanderbilt.edu/histology/slide.php?image_name=myelin&slide_file=images/histology/nervous_tissue/display/schwann3.jpg&image_id=1058 ...
... www.mc.vanderbilt.edu/histology/slide.php?image_name=myelin&slide_file=images/histology/nervous_tissue/display/schwann3.jpg&image_id=1058 ...
Ch 3 Biopsychology & the Foundations of Neuroscience
... neurons carry messages away from the central nervous system. Neuron is the basic unit or "building block" O 7.The ________ of the nervous system. O 8. Describe the process of reuptake. O Neurotransmitters are broken down, intercepted, ...
... neurons carry messages away from the central nervous system. Neuron is the basic unit or "building block" O 7.The ________ of the nervous system. O 8. Describe the process of reuptake. O Neurotransmitters are broken down, intercepted, ...
Slide ()
... Anatomy of the cochlea. A low magnification light micrograph of a near midmodiolar cross-section illustrates the tissues and fluid-filled spaces of the 2½ turns of the mouse cochlea. As indicated in the upper turn, the fluid spaces are the scala tympani and scala vestibuli filled with perilymph, and ...
... Anatomy of the cochlea. A low magnification light micrograph of a near midmodiolar cross-section illustrates the tissues and fluid-filled spaces of the 2½ turns of the mouse cochlea. As indicated in the upper turn, the fluid spaces are the scala tympani and scala vestibuli filled with perilymph, and ...
Biology of Humans 2/e
... The signal passes across the synaptic cleft as a chemical called neurotransmitter which is released from vesicles by exocytosis. Neurotransmitter is a chemical that is secreted into a synaptic cleft by a neuron that affects another neuron or an effector by binding with receptors on it. The sending c ...
... The signal passes across the synaptic cleft as a chemical called neurotransmitter which is released from vesicles by exocytosis. Neurotransmitter is a chemical that is secreted into a synaptic cleft by a neuron that affects another neuron or an effector by binding with receptors on it. The sending c ...
Understanding the Transmission of Nerve Impulses
... called ions. The important ions in the nervous system are sodium and potassium (both have 1 positive charge, +), calcium (has 2 positive charges, ++) and chloride (has a negative charge, ‐). There are also some negatively charged protein molecules. It is also importan ...
... called ions. The important ions in the nervous system are sodium and potassium (both have 1 positive charge, +), calcium (has 2 positive charges, ++) and chloride (has a negative charge, ‐). There are also some negatively charged protein molecules. It is also importan ...
Glossary
... Scientific studies in which researchers assess hereditary influence by examining blood relatives to see how much they resemble each other on a specific trait. ...
... Scientific studies in which researchers assess hereditary influence by examining blood relatives to see how much they resemble each other on a specific trait. ...
SECTION 3 - THE NERVOUS SYSTEM AND SENSORY
... into the neuron cell cytoplasm – with ion gates closed. During the production of an action potential, the pumps remain “on” while the sodium channels open first allowing the initial entry of sodium ions into the neuron (depolarization), followed immediately by the potassium channels opening with pot ...
... into the neuron cell cytoplasm – with ion gates closed. During the production of an action potential, the pumps remain “on” while the sodium channels open first allowing the initial entry of sodium ions into the neuron (depolarization), followed immediately by the potassium channels opening with pot ...
section 3 - the nervous system and sensory physiology
... into the neuron cell cytoplasm – with ion gates closed. During the production of an action potential, the pumps remain “on” while the sodium channels open first allowing the initial entry of sodium ions into the neuron (depolarization), followed immediately by the potassium channels opening with pot ...
... into the neuron cell cytoplasm – with ion gates closed. During the production of an action potential, the pumps remain “on” while the sodium channels open first allowing the initial entry of sodium ions into the neuron (depolarization), followed immediately by the potassium channels opening with pot ...
End-plate potential
End plate potentials (EPPs) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called ""end plates"" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.5mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.