NPB 113 Lecture Notes - Lecture 1: Blood Sugar, Homeostasis, Brainstem
3 Apr 2021
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Brain ecf ( different composition than normal ecf ) Death or dysfunction occurs w/ large changes in conditions. Blood glucose = 70 - 100mg i 100ml. Interdependence : all organs , tissues , cells work together to maintain homeostasis 1 life. Strength of response is proportional to disturbance. Note : not all reflexes are to counteract disturbances. " ex : pupil dilation / constriction , knee reflex: t tb 38. 5 c runny sensory receptors. Afferent pathway ons e sweating . (t) evaporative cooling. Effector#efferent organ pathway sweat glands compares to set point. Pomh regulatedki sites. is/e""l homeostatically variance is small , narrow range n to u to timely ears ) time hours ) 2 neuron pathway : preganglionic t postgangllonlc neuron. Dual input : organs receive sns and pns input simultaneously , constantly (cid:8869) opposing actions parasympathetic. " rest and digest " " gs go# w b.
