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Class Notes for Biomedical Sciences at Ryerson University

BMS 870 Lecture Notes - Lecture 15: Stapes, Epsp Synthase, Semicircular Canals
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Ch.11 Auditory and Vestibular System November 29, 2017 3:17 PM Nature of Sound Audible variations in air pressure Cycle - distance bw successivecompressed patches of air Sound freq...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 9: Glossopharyngeal Nerve, Tas1R2, Thalamus
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W7L1: Chemical Senses October 26, 2017 8:28 AM Introduction Animals depend on chemicalsenses to identify nourishment, poison, or potential mate. Chemical sensation - oldest and most commonsensory system Ch...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 16: Motor Neuron, Temporal Lobe, Saccule
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Ch. 11 cont December 24, 2017 6:21 PM Central Auditory Processes Anatomy of Auditory Pathways Afferents from spiral ganglion into brain stem in the auditory-vestibular nerve. At the lvl of medulla, axons inn...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 11: Rhodopsin, Scattering, Far-Sightedness
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Ch. 9 The Eye October 30, 2017 3:28 PM Introduction Human eye vs camera: Retina Contains photoreceptorsconvert light E to neural activity Detectsdifferences in intensity of l...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 12: Off Centre, Extraocular Muscles, Lateral Geniculate Nucleus
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Ch. 9 Continued November 16, 2017 8:39 PM Phototransduction In rods: Light energy <-> photopigment = in membrane potential Analogous to GPCR - change in 2 messenger ...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 17: Posterior Grey Column, Trigeminal Nerve Nuclei, Trigeminal Nerve
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Ch. 12 Somatic Sensory Systems December 4, 2017 6:30 PM Somatic sensation - ache, temperature, pressure Somatic sensory system - diff from others Receptors broadly distributed Responds to ...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 10: Thalamus, Endocrine System, Olfactory Tract
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Chemical Senses Cont December 24, 2017 6:33 PM Smells Warns of harmful substances, combines w/ taste for identifying foods. Pheromones- mode of communication Reproductivebehaviour ...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 20: Golgi Tendon Organ, Nmda Receptor, Nociception
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Ch. 13 Cont December 24, 2017 6:29 PM Excitation-ContractionCoupling Muscle contraction: Ach released from axon terminals of alpha motor neurons Ach produces EPSP in postsynaptic membrane due to...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 21: Betz Cell, Basal Ganglia, Pontine Nuclei
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Ch. 14 Brain Control of Movement December 5, 2017 11:07 PM Introduction Descending Spinal Tracts Lateral pathways - voluntary movementof distal musculature Effects of lateral pathway lesion...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 13: White Matter, Pyramidal Cell, Opponent Process
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Ch. 10 Central Visual System November 7, 2017 3:51 PM Introduction Neurons in visual system Neural processing = perception ~100 mill photoreceptorsin retina + 1 mill axons leave eye in the o...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 19: Dorsal Root Ganglion, Motor Unit, Neuromuscular Junction
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Ch. 13 Spinal Control of Movement December 5, 2017 1:11 PM Introduction Motor system - all muscles, and neurons that control muscles Function: coordinated movements Parts of motor control (moto...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 14: Parallel Computing, Color Vision, Temporal Lobe
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Ch. 10 central Cont November 16, 2017 8:36 PM Physiologyof Striate Cortex Receptive Fields 4C receptive fields ~ magno and parvo LGN neurons. = small monocular center-surround receptive fields. Binocul...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 18: Thermoreceptor, Posterior Grey Column, Raphe Nuclei
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Somato cont December 24, 2017 6:25 PM Pain Nociceptors - free, branching unmyelinated nerve endings that signal damage. Types: mechanical, thermal, chemical Difference bw pain and nociception ...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture Notes - Lecture 7: Positron Emission Tomography, Magnetic Resonance Imaging, Choroid Plexus
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W5L2: Structure of Nervous System October 15, 2017 3:27 PM Comparison of mammalian brains Rat Cat Sheep Chimpanzee Human Dolphin Directions Medial or lateral Anterior or posterior ...

Biomedical Sciences
BMS 870
Marie Killeen
BMS 870 Lecture 5: W4L2 Neurotransmitter Systems
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W4L2: Neurotransmitter Systems September 26, 2017 10:23 PM NT systems can be defined by: the molecule, synthetic machinery, packaging, reuptake and degradation, and action. Acetylcholine released by cholinergic (Otti) neu...

Biomedical Sciences
BMS 870
Marie Killeen

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