ANTR 350 1st Edition Lecture 23Outline of Last Lecture I. BiofeedbackII. Effector organsIII. 2 neuron sequenceIV. divisions Outline of Current Lecture II. Sympathetic divisionIII. Blood flowIV. DistributionV. Sympathetic innervationVI. Thoracolumbar Current Lecture-sympathetic-anatomically designed to permit a generalized response to stress, -whether it’s physical (Injury), -physiological (Exercise), -or psychological (Fear or anxiety); -called the “fight or flight or fright” system. -blood flow-decreased diameter (vasoconstriction) = decreased flow à increased Blood Pressure-increased diameter (vasodilation) = increased flow à decreased Blood Pressure-distribution-sympathetic: all regions in body (organs, limbs, skin, blood vessels & glands)-parasympathetic: head & neck; trunk; glands (except sweat glands)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-does NOT innervate the upper or lower limb-sympathetic innervation-blood vessels-glands throughout the body-sweat glands receive ONLY sympathetic innervation.-visceral organs of the head and neck-visceral organs of the thoracic cavity-visceral organs of the abdomen and pelvis -“Thoracolumbar” divisionpreganglionic cell bodies are located in the lateral gray horn of the thoracic and upper lumbar spinal cord,
View Full Document
Unlocking...