L

Lacteals, 302 Lactic acid, 148 Lactogenesis, 127 Lamina propria, 281 Large intestine, 303-305 Law of LaPlace, 247 Left atrium, 166 Left ventricle, 166 Length-tension relationship cardiac muscle, 168 skeletal muscle, 152 smooth muscle, 161-162 Leukocytes, 230-232 Leukotrienes, 79 Levodopa, 43 Leydig cells, 127

Ligand-gated calcium channels, 161 Limbic multimodal association area, 54 Limbic system autonomic nervous system activities regulated by, 92 description of, 82 Lipase, 286, 302 Lipid(s)

description of, 290-291 small intestine digestion and absorption of, 302-303 Lipid bilayer, 8 Lipid solubility, 9 Lipid-soluble substances, 60 Lipophilic substances, 8 Liver, 295-297 Local anesthetics, 32 Local current flow, 25 Long-loop negative feedback, 124 Loop diuretics, 323-324 Loop of Henle, 311, 321-323 Lower esophageal sphincter, 288 Low-pressure receptors, 208 Lumbar puncture, 64 Lung(s)

airways of, 241-242 alveoli of description of, 240-241, 247 interdependence of, 250-251 bronchi of, 241 bronchioles of, 241-242 connective tissue in, 247

elastic behavior of, 246-250 elastic recoil of, 246 gas exchange in, 240 pleura of, 242

pulmonary compliance, 246-247 surfactant, 248-249 Lung capacities, 255-256 Lung volume definition of, 244, 252 expiratory reserve volume, 255 inspiratory reserve volume, 255 residual volume, 254-255 tidal volume, 254-255 Luteinizing hormone, 122, 127 Lymph, 223

Lymphatic capillaries, 223 Lymphocytes, 232 Lysosome, 231

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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