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NeuroSipe Ascending Pathways and Lesions
NeuroSipe Ascending Pathways and Lesions

... • Conducts low spatial resolution (crude) touch • Sensory neuron cell bodies in the dorsal root ganglia • Synapse immediately in dorsal horn & cross over through anterior commissure • Takes two to three segments for decussating fibers to reach other side • Ascend through anterolateral white matter • ...
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[j26]Chapter 9#
[j26]Chapter 9#

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PPT - Angelfire
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Physiology (L09) Slides#58 + #59 :
Physiology (L09) Slides#58 + #59 :

... -The amount of oxygen in pulmonary vein and in radial artery is the same, what differs is the amount of oxygen in the artery and the vein of one structure because between we have a capillary where exchange of materials occur. -Pre-capillary center is within the arteriol that comes from the heart. -T ...
Thinking, Learning and Intelligence: The Brain Imagine a 500 pound
Thinking, Learning and Intelligence: The Brain Imagine a 500 pound

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Yuste-Banbury-2006 - The Swartz Foundation
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features of mercury toxic influence mechanism

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make motor neuron posters now
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... open as Ca+ flows inward. This causes synaptic vesicles to fuse with the membrane and release neurtotransmitters that bind with receptors on adjacent neurons. B. Endocytosis eventually returns neurotransmitters to the cytoplasm. 1. Enzymes may break down neurotransmitters to stop signal transmission ...
Striate cortex April 2009
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The Cerebellum
The Cerebellum

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Cortical Neurons and Circuits: A Tutorial
Cortical Neurons and Circuits: A Tutorial

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ppt
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Stimulus (physiology)



In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.
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