I-24 Index
manual dexterity of, 3
muscles of, 118, 118f
n polydactyly and, 380, 380f,
390f, 401t
n washing, and illness
prevention, 11f
Haploid cells, 355, 357, 357t,
362–363, 363f, 364–365,
364f–365f, 367, 375
Hashimoto’s disease, 157, 171t
Haversian system (osteon), 88, 88f
n Hay fever, 165, 170, 170f
n HBV (hepatitis B virus), 322
HCG (human chorionic gonadotropin),
149t, 169f, 333, 336, 427, 432
n HCV (hepatitis C virus), 169, 322
HDLs (high-density lipoproteins), 134,
177, 203, 216–217
Head. See also Brain
cranial cavity in, 76, 76f
development of in embryo, 338,
338f–339f
n injury to, 258, 274
movement of, 97f
skull, 91f, 92–93, 92f–93f, 96, 447,
447f, 451, 451f
n Headache, 259
n Healing, electrical stimulation
and, 99
Hearing, 272–273, 272f–273f
aging and, 275, 349
n damage to, 273, 275
n disorders of, 275, 275f, 284
prenatal development of,
344f, 345
Heart, 122f. See also Cardiovascular
disease; entries under Cardiac
aging and, 348–349, 348t
n arrhythmias, 135, 135f
beating of (cardiac cycle),
124–125, 125f
regulation of, 128, 131, 296
blood pressure in, 129, 129f, 129t
cardiovascular circuits, 126–127,
126f, 127f
in circulatory system, 122f, 123
core temperature and, 82
n defects, inborn, 136
development of, 338f–339f, 339
n Down syndrome and, 398
in endocrine system, 292t
n fetal alcohol syndrome and, 345
of fetus, 341, 341f
hormone production by, 292t, 300
location of, 124, 124f
muscle of. See Cardiac muscle
nervous system control of, 128, 131,
250, 250f, 251, 252
pacemaker cells in, 128
n referred pain from, 269f
sounds (“lub-dup”) of, 125
structure and function of, 124–125,
124f, 125f
n transplants, 155, 155f
valves, 124–125, 124f, 125f, 126,
136, 140
n Heart attack (MI; myocardial
infarction), 121, 129,
134–135, 140
Heart beat (cardiac cycle),
124–125, 125f
regulation of, 128, 131, 296
n Heartburn, 208
Heart disease. See Cardiovascular
disease
n Heart failure, 135
“Heartstrings,” 124
Heat capacity, of water, 22
n Heat exhaustion, 82
n Heat stress, 82–83, 82f, 83t
n Heat stroke, 82
Height, 348
aging and, 348
environmental factors in, 381
as multifactorial trait, 380, 381f
n Heimlich maneuver, 183, 183f
HeLa cells, 425
Helicobacter pylori, 210, 210f
Helium, 18f, 19
Helper T cells, 163, 164, 164f–165f,
166, 172
Hematocrit, normal levels, 149t
Heme, 86, 184–185
Heme groups, 144, 144f, 145
Hemings, Sally, 419
Hemispheres, of brain, 252, 252f, 254
n Hemodialysis, 233, 233f
Hemoglobin
carbon dioxide binding and, 184–185
and carbon monoxide poisoning, 152
and dietary iron requirements, 214
fetal, 340, 379
gene for, 409
n iron deficiency and, 152
micrograph of, 45f
normal levels, 149t
oxygen binding and transport, 34,
34f, 143, 144, 144f, 152, 181,
181f, 184–185, 185f
as pH buffer, 185
as pigment, 79
n porphyria and, 86
recycling of, 203
n sickle-cell anemia and, 378f, 379
structure and function of, 34, 34f,
143, 144, 144f
n Hemolytic anemias, 152, 417f
n Hemolytic disease of the newborn, 148
n Hemophilia, 394–395, 394f, 395f,
401t, 418, 420, 442
n Hemorrhoids, 208
Hemostasis, 150–151, 150f
Hepatic arteries, 127Hepatic portal system, 127, 127f,
203, 203f
Hepatic portal vein, 126f, 127, 127f,
203, 203f, 341f
Hepatic vein, 122f, 127, 127f, 203,
203f, 341f
n Hepatitis, 41, 168, 168t, 169, 173t,
208, 322
n Hepatitis A virus, 168t
n Hepatitis B virus (HBV), 168,
168t, 322
n Hepatitis C virus (HCV), 169, 322
Hepato- (prefix), 431f
HER2 protein, 169
Herbal incense, 260
n Herbicides, 37, 430. See also
Pesticides
n Herbivores, 462, 464f
n Herceptin, 169
n Hereditary methemoglobinemia, 401t
Heredity. See Gene(s); Genetic
n Herniated disk, 93
n Heroin, 234, 260
n Herpes infections (herpes virus), 79,
258, 280, 321t, 322, 322f, 322t
n Herpes simplex, 322
Heterotrophs. See Consumers
Heterozygous individuals, 374, 374t,
375, 375f, 376, 376f, 377, 377f,
379f, 390–391, 392, 393,
394–395
Hexosaminidase A, 392
HGH. See Human growth hormone
n HiB (Haemophilus influenzae)
vaccination, 168t
n High blood pressure (hypertension),
129, 129t
n and cardiovascular disease,
134, 135t
n genetic vs. environmental risk
factors, 381
n health risks associated with, 129,
135, 233
n and licorice, 238
n in metabolic syndrome, 216
n risk factors for, 129t, 140, 216,
218, 293
n treatment of, 139, 396
High-density lipoproteins (HDLs), 134,
177, 203, 216–217
Hindbrain, 252, 252f
Hip bone, 95
Hip joint, 95, 97f, 98
Hippocampus, 255, 255f, 257, 257f
Histamine, 161, 161f, 165, 165t, 170,
170f, 268
Histones, 349, 354
n HIV (human immunodeficiency
virus), 149t, 152, 169, 171, 172,
172f, 173, 337, 429
n Hives, 165, 170
HIV protease, 172Hands, continued
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