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WHAT IS PHYSIOLOGY
TALK GIVEN TO NIGHTINGALES
Prof.Hla Yee Yee
25/2/2011
International Medical University
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International Medical University
PHYSIOLOGY & NURSING
TemperaturePulse & BP Respiration
Rise in temperature reflectsinfectionPattern of fever varies withthe causal organismSmall rise may just be
dehydrationExtremes of age cannotregulate body temperatureeffectively.. heat stroke
HypertensionHypotension
ShockArrhythmias
Raised in fever Hyperventilation
Acidosis
Intake-outputchart is ofcrucialimportancePartogram
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International Medical University
What is PHYSIOLOGY?
Physiology (Gr) Study of NatureModern meaning- Study of the FUNCTIONINGofliving things
Plant PhysiologyBacterial PhysiologyComparative PhysiologyHuman Physiology
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HUMAN PHYSIOLOGY
BASIC & APPLIEDBASIC HUMAN PHYSIOLOGY IS DIVIDED INTO:
Molecular PhysiologySubcellular componentsMay also be called Cells & MoleculesBiochemistry
Cell Physiology
Cellular mechanisms Cell signalling
Systems Physiologye.g. Cardiovascular, Respiratory, Reproductive,Renal, haemopoietic system, endocrine system,musculoskeletal system, nervous system, etc
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APPLIED PHYSIOLOGY IS DIVIDED INTO :
Sports Physiology
High Altitude Physiology
Clinical Physiology
Space Physiology
Environmental Physiology
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The CELL is the structural & functional unit of living
organisms and it functions best if its environment isUNCHANGED !
CHANGE!!! YES!!! CHANGE? NO!!!!
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The French scientist Claude Bernard is considered the
Father of Modern Physiology . He observed that theMilieu interieur (environment within) wasremarkably constant. Homeostatic mechanisms preservethe constancy
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HOMEOSTATIC CONTROL MECHANISMS
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Disease = dis-ease
The NERVOUS SYSTEMresponds quickly & theENDOCRINE systemmore slowly, butsustained
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This is aNEGATIVEFEEDBACK
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Cervix dilation
Stretch receptors in the cervix
Hypothalamus
Posterior pituitary release oxytocin
Oxytocin acts on uterine muscle causing contraction
Muscle contraction forces baby through the cervix,
stretching it
Positive Feedback
mechanism
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International Medical University
What weve just seen involves HOMEOSTASISachieved by the NERVOUS SYSTEMandENDOCRINEsystems..
The Nervous System involved in the majority of homeostaticresponses is the AUTONOMIC NERVOUS SYSTEM (ANS)(alsocalled Involuntary/Automatic Nervous System
The Nervous System that controls the skeletal muscles is theSOMATIC NERVOUS SYSTEM(also called Voluntary NervousSystem because it has to with contraction of skeletalmuscles (which are voluntary ; except in the case of posturalreflexes)
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Domain of Somatic N.S Domain of ANS
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Higher Functions: learning,memory, language, music,religion
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THANKS FOR YOUR ATTENTION!
