cell? __________endomysium_______________ 2. Synaptic vesicles in the axon terminal of a motor neuron contain what neurotransmitter? __________acetylcholine_______________ 3. An action potential in the axon terminal of a motor neuron opens what type of ion channels? ____________Voltage-gated Calcium_____________ 4. By what means of membrane transport does the neurotransmitter leave the axon terminal? ____________exocytosis_____________ 5. Binding of neurotransmitter
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neuron to conduct these impulses is because of an electrochemical voltage across the plasma membrane of that neuron. An action potential is an all or nothing response to a stimulus along a single axon. A compound action potential is a graded response that results from the stimulation of more than one axon. Action potentials can be broken down into five different phases: resting potential‚ threshold‚ rising‚ falling‚ and recovery. The inside of a cell is negatively charged and the potential difference
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parts) I II III Dendrite Cell body and Axon Synapse Information is acquired Information travels as an electrical impulse Part where electrical signal is converted into chemical message for onward transmission to next neuron by release of neurotransmitters Nucleus Nerve ending Dendrite Axon Cellpody Structure of neuron Fig. 7.1 (a) P 115 Synapse : The point of contact between the terminal branches of axon of one neuron with the dendrite of another neuron
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ACTIVITY 1: THE RESTING MEMBRANE POTENTIAL 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out the neuron through the K+ leak channels? When the diffusion is greater on one side‚ the other side will slow down. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your predictions? There are two potassium’s for every sodium so the increase of potassium will make it more
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between the central nervous system and peripheral organs. The sympathetic nervous system originates in the spinal cord. Specifically‚ the cell bodies of the first neuron (the preganglionic neuron) are located in the thoracic and lumbar spinal cord. Axons from these neurons project to a chain of ganglia located near the spinal cord. In most cases‚ this neuron makes a synapse with another neuron (post-ganglionic neuron) in the ganglion. A few preganglionic neurons go to other ganglia outside of the sympathetic
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| |Somatic nervous system |The SNS is the part of the PNS that interacts with the external environment. | |Axon |The long‚ narrow process that projects from the cell body. | |Buttons |The button-like endings of the axon branches‚ which release chemicals into synapses. | |Autonomic nervous system |The ANS is the part of the
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full understanding of Guillain-Barre syndrome. Guillain-Barre syndrome is a rare disorder that makes your body’s immune system attacks your nerves. In Guillain-Barre syndrome‚ the immune system starts to destroy the myelin sheath that surrounds the axons of many peripheral nerves‚ or even
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___Dependent Variable _____________________ is the factor or condition that is measured at the end of the study and is presumed to vary as a result of the manipulations of the independent variable(s). 6. The ___Synapse ____________ is the junction where the axon of a sending neuron communicates with a receiving neuron across the synaptic cleft. 7. The right and left halves of the cerebrum‚ covered by the cerebral cortex and connected by the corpus callosum‚ are called the __Cerebral Hemispheres
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QUILONA‚ KLARISSE JANE A. BSP-1B Animal Tissues 1. Epithelial Epithelial tissue is made of closely-packed cells arranged in flat sheets. Epithelia form the surface of the skin‚ line the various cavities and tubes of the body‚ and cover the internal organs. Subsets of Epithelia Epithelia that form the interface between the internal and external environments. Skin as well as the lining of the mouth and nasal cavity. These are derived from ectoderm. Inner lining of the GI tract‚ lungs‚ urinary
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Chapter 1 • Anatomy & Physiology • Gross anatomy – visible to naked eye • Microscopic • Developmental • Pathological anatomy • Radiographic anatomy • Molecular biology • Physiology • Focuses on cellular or molecular level • Principle of Complementarity of Structure and Function • A&P are inseparable • Function reflects structure • Specific form • Levels of organization 1. Chemical level 2
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