Lab Notes Lecture 1
Lab Notes Lecture 1 57583
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This 11 page Class Notes was uploaded by Jada Winchester on Saturday August 29, 2015. The Class Notes belongs to 57583 at University of Missouri - Columbia taught by Mark Kirk in Summer 2015. Since its upload, it has received 54 views. For similar materials see Bio_Sc 3700 Animal Physiology in Biology at University of Missouri - Columbia.
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Date Created: 08/29/15
Nerve lesions and crayfish behavior see figure 1 crayfish uses legs normally but if frightened it uses its abdomen to move very quickly swimmeret is used for reproductive purposes moving pattern comes from ganglia in brain have 6 abdominal segments big muscles are flexers small muscles are extensers ventra nerve cord is between the flexers 2 kinds of giant axons medial and lateral myeination allows for fast transmission in invertebrates giants are used for transmitting reflexes doesn39t require the brain comes from the spinal cord in inveterbrates x section through nerve cord quick flex of tail is the reflex of crayfish consists of a single flex of the tail atera giants tail to head media giant is from head to tail neuron in head when it is stimulated it sends an AP to the tail fig 5 escape reflex other nerve pathways nongiant systems 0 movement produced at each ganglion and is coordinated by nerve cord eg swimmerets o subesephageal and cerebral ganglia coordinate sensorymotor pathways eg oinch on leg causes animal to swim away Lesioning crayfish refers to two crayfish in lab one normal and other has a lesion through snipping of cord cutting all axons Lecture 1 0 Introduction Syllabus Labs On Line 0 Central Themes in Physiology 0 Background for CPA lMouse T ilt Mutant Central Themes in Physiology 0 Structure Function Organism 3k Is MA la Organ and Tissue 1 Level Tissues Skelalsl Wscle 2quot Cell I 39 Cells l 39 l Cellular l level Slidmg filem nl model of muscle contraction Mmmmulewlar Q m F1 gure Not 1n Text I I 539quot Aalin 1 Fllslnem Filament Aclin 39 Molecrles 2539 l 39 Maleculsr level Copyrighl OTbe McGrewHill Companies Inc Permission required lor reproducbon or display Fig 1018 Outer Middle Inner ear il ear 139 ear j i A quot 39 39l Semicircular canals Hel39x Facial nerve 4 Vestibular nerve Auricle j 7 39 V 39 Cochlear nerve 39 239 Cochlea Temporal bone Round window External 39 auditory Tym amc meatus cav39 Auditory 5 Auditory tube ss1cles Earlobe 39 I ympanic membrane Copyright OThe McGrewHill Companies Inc Permission required Ior reproducbon or display Fig 1012 Anterior canal Posterior canal Cochlea Copyrighl OTbe McGrewHill Companies Inc Permission required lor reproducbon or display F39 1 1 Otoliths 1g 0 5 I I Otolithic membrane quot elatinous material gem R a Head upright Sensory Hair Supporting cells nerve cells fibers Gelatinous material sags Stereocilia of 391 hair cells bend 39 stimulating Gravitational force b Head bent forward StructureFunction Adaptation through natural selection Homeostasis maintenance of constant internal conditions Feedback Control Systems Primary tissuesgive rise to organs Organ systems The Tilt Mouse and Sensory Epithelium Lecture 2 Central Themes in Physiology continued 394 Primary Functional units of body from organized tissues Organ Systems covered in this course 0CPA1 The Mouse OMembrane Structure Ionic Distributions permeation begin Central Themes in Physiology StructureFunction Adaptation through natural selection Homeostasis maintenance of constant internal conditions Feedback Control Systems Fig 11 Copyright The McGrawHill Companies Inc Permission required for reproduction or display rgt ix gt Sensor ea quotix Sensor activated Effector activated Normal 6 range X Time gt Homeostasis Changes over time of a physicochemical variable such as oxygen Large fluctuations Small internal fluctuations Figure Not in Text Fig 13 Negative Feedback Loops Copyright The McGrawHill Companies Inc Permission required for reproduction or display Set point lNormal averagey vg gg range Dynamic Fig 14 Body Temperature Maintenance Copyright The McGrawHill Companies Inc Permission r39 quired for reproduction or display Sweat v 370 C A Normal y range Shiver J Shiver Effectors Stuart Ira Fox Human Physiology so copynwu Hi Im Ina l quot lru All rights reserved Negative Feedback 4 Insulin and Blood Glucose Eating Hormonal Control l gt 1 Bloodglucose Feedback I Pancreatic islets Inhibition 9 I Cellular uptake of glucose 39 l Figure Not In 1 Blood glucose Textbook Central Themes in Physiology 0 StructureFunction Adaptation through natural selection 0 Homeostasis maintenance of constant internal conditions 0 Feedback Control Systems Negative Feedback Control 0 blood clotting ultimately part of a negative feedback control system that decreases the loss of blood after injury Central Themes in Physiology Structure Function Adaptation through natural selection Homeostasis maintenance of constant internal conditions Feedback Control Systems Primary tissues give rise to organssystems 4 Primary Tissues Muscle Functional units of body from organized tissues When grouped together into anatomical functional unit 2 Organ such as skin heart brain kidney y a lnr Skin as an v Stratum corneum Epidermis E r A 39 Stratum granulosum Epithelial L J K 39 39 Stratum spinosum t39ssue 39 Stratum basale Arrector pili muscle Muscle tissue Connective tissue Sweat gland Hair bulb 1 Motor nerve Nerve tissue Sensory nerve Organ Systems 0 Integumentary system Mouse Tilt Mutant CPA 1 The Tilt Mouse Fig 1015 Sensory axons a Head upright Stereocilia of hair cell bands stimulating neurons b Head bent forward Extracellular side Glycolipid i glcoprotein Carbohydrate Ch lesterol Pmtems Phospholipidse Intracellular side Figure Not In Textbook Selectively Permeable Membrane Na 10 quo 120 Figure 443 0 K L 140 K 10 2395 ferent inside an Ca2i lt 10 a Ca2o 2390 The concentrai Cl l 34 Cl la 120 concentration i unb39ound and cause the list 0 ance out perfei negative charg A 140 Figure Not in Text Antenna a f Antenna Cheliped Nerve Lesions amp Crayfish Behavior Eye Cheliped Exopod oi first ma Second walking leg Third r alking leg Second maxrllip Mouth Third maxilli Dervrcal groove Third walking I Carapace Fourth First copulatory walking leg swimmeret of male Fifth walking leg Abdomen Telson Uropod B Telson Nervous System Xsection through nerve cord Ventral Cord medial giants O lateral giants O O O 0 0 O nongiants 0 OD ventral nerve cord C medial and lateral giant axons occupymost of the spacewithin each abdominal segment one impulse in either is sufficient to nigger a tail ip Abdominal nerve cord Thoracic nerve cord Tail Muscles Escape Reflexes Rapid escape response to head touch in crayfish Rapid escape response to tail touch in crayfish Other nerve pathways Nongiant systems Movement produced at each ganglion and is coordinated by nerve cord eg swimmerets Subesophageal and cerebral ganglia coordinate sensorymotor pathways eg pinch on leg causes animal to swim away Today s lab Perform behavioral tests on two crayfish Find the lesioned animal and the location of the lesion Explain in a paper to be handed in how each test led you to your diagnosis Be specific Group grade worth 10 points to be added to next week s quiz Lesioning crayfish Next quiz From information given be able to diagnose where lesion occurred Understand control of reflex and non reflex movement in crayfish Apply knowledge of nervous system to crayfish biology
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