Physiology Exam #2 - Physiology Exam #2 Interaction Among...

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Physiology Exam #2 Interaction Among Transduction Pathways -Cells have receptors for diff ligands -Diff ligands activate diff transduction pathways -response of cell depends upon complex interaction of signaling pathways Regulation of Cell Signaling -Cell signaling important for regulation of physiological processes -components of biological control systems: -sensor -detects level of regulated variable -sends signal to an integrating center -integrating center -evaluates input from sensor -sends signal to effector -effector -target tissue, responds to signal from integrating center -set point: value of the variable that the body is trying to maintain -feedback loops -positive: output of effector amplifies variable away from the set point -not common in physiological systems -negative: output of effector brings variable back to set point Pituitary Hormones -Pituitary gland secretes many hormones - 2 anatomic sections -Anterior pituitary (adenohypophysis) -Hypothalamus synthesizes and secretes neurohormones -Hypothalamic-pituitary portal system
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Physiology Exam #2 - Physiology Exam #2 Interaction Among...

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