N

Na+, K+-ATPase pump, 319 Na+-K+ ATPase, 14 Na+-K+ pump, 20-21 Negative chronotropic effect, 183 Negative feedback, 4-6, 124, 205 Negative inotropic effect, 188 Nephritis, tubulointerstitial, 340 Nephron, 309-311 Nephropathies, drug-related, 340 Nervous system autonomic, see Autonomic nervous system central, see Central nervous system components of, 3 definition of, 45 function of, 2

motor division of, 4 overview of, 45-46 peripheral, 46 Net diffusion, 11-12 Net filtration pressure, 313-314 Neuroeffector junction, 93 Neurogenic muscle, 159 Neurohypophysis, 120, 124-126 Neuromuscular junction, 143 Neuron(s)

afferent, 46, 67, 73 axon hillock of, 29 axon of, 29 axon terminal of, 29 cell body of, 29 classes of, 46-47 definition of, 23 efferent, 46 expiratory, 271 first-order, 67-68, 81 function of, 35 inspiratory, 271

interconnections between, 40-41 interneurons, 46-47 motor, 67

oxygen supply for, 41 postganglionic definition of, 93

of sympathetic nervous system, 95-96 postsynaptic, 38 preganglionic description of, 93 of parasympathetic nervous system, 97 of sympathetic nervous system, 93-94 presynaptic, 35, 38-39 second-order, 66-68, 70, 81 somatic motor, 67 synaptic, 35 third-order, 68, 82 tracts, 50, 65 Neurosecretory cells, 120-121 Neurotransmitters, see also specific neurotransmitter altered release of, 41-42 definition of, 36, 38 nociceptive afferent fibers, 81 receptor interactions, 42

replacement of, 42-43 Neutrophilia, 231 Neutrophils, 231 Nicotinic receptors, 101 Nitric oxide, 212 Nitroglycerin, 213 Nociceptors definition of, 32, 78 mechanical, 78 polymodal, 78 sensitization of, 80 thermal, 78 Nodes of Ranvier, 30 Nonnarcotic analgesics, 87-88 Nonsteroidal anti-inflammatory drugs,

87, 292-293, 340 Norepinephrine, 98, 102, 107-108, 123, 209

Nucleus raphe magnus, 83

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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