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L_0541
hearing and balance
T_2999
FIGURE 1.1
image
textbook_images/hearing_and_balance_21875.png
L_0541
hearing and balance
T_2999
FIGURE 1.2 nerve). The brain reads the sound and tells you what you are hearing.
image
textbook_images/hearing_and_balance_21876.png
L_0541
hearing and balance
T_3000
FIGURE 1.3 This gymnast is using the semicircular canals in her ears, along with the cerebel- lum in her brain, to help keep her balance on the balance beam.
image
textbook_images/hearing_and_balance_21877.png
L_0542
heart
T_3001
FIGURE 1.1 The atria receive blood and the ventricles pump blood out of the heart.
image
textbook_images/heart_21879.png
L_0543
helpful bacteria
T_3004
FIGURE 1.1
image
textbook_images/helpful_bacteria_21881.png
L_0544
hiv and aids
T_3010
FIGURE 1.1 In this picture, the large structure on the bottom is a human immune cell. It is infected with HIV. A new HIV particle is shown budding out of the immune cell.
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textbook_images/hiv_and_aids_21882.png
L_0545
homeostasis
T_3013
FIGURE 1.1
image
textbook_images/homeostasis_21883.png
L_0546
how the eye works
T_3015
FIGURE 1.1
image
textbook_images/how_the_eye_works_21884.png
L_0547
human causes of extinction
T_3019
FIGURE 1.1
image
textbook_images/human_causes_of_extinction_21886.png
L_0548
human digestive system
T_3021
FIGURE 1.1
image
textbook_images/human_digestive_system_21888.png
L_0550
human genome project
T_3025
FIGURE 1.1
image
textbook_images/human_genome_project_21890.png
L_0551
human population
T_3026
FIGURE 1.1
image
textbook_images/human_population_21891.png
L_0552
human skeletal system
T_3030
FIGURE 1.1 Storage. Bones store calcium. They contain more calcium than any other organ. Calcium is released by the bones when blood levels of calcium drop too low. The mineral, phosphorus is also stored in bones.
image
textbook_images/human_skeletal_system_21892.png
L_0552
human skeletal system
T_3031
FIGURE 1.2
image
textbook_images/human_skeletal_system_21893.png
L_0568
indoor air pollution
T_3086
FIGURE 1.1
image
textbook_images/indoor_air_pollution_21918.png
L_0569
infancy and childhood
T_3088
FIGURE 1.1 This babys teeth have started to come in. Babies often chew on toys or other objects when they are getting new teeth. They may even chew on their toes.
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textbook_images/infancy_and_childhood_21919.png
L_0569
infancy and childhood
T_3089
FIGURE 1.2
image
textbook_images/infancy_and_childhood_21920.png
L_0571
influences on darwin
T_3093
FIGURE 1.1
image
textbook_images/influences_on_darwin_21922.png
L_0572
injuries of the nervous system
T_3096
FIGURE 1.1
image
textbook_images/injuries_of_the_nervous_system_21923.png
L_0579
jawless fish
T_3113
FIGURE 1.1
image
textbook_images/jawless_fish_21937.png
L_0580
keeping bones and joints healthy
T_3115
FIGURE 1.1
image
textbook_images/keeping_bones_and_joints_healthy_21938.png
L_0580
keeping bones and joints healthy
T_3116
FIGURE 1.2
image
textbook_images/keeping_bones_and_joints_healthy_21939.png
L_0581
keeping skin healthy
T_3121
FIGURE 1.1
image
textbook_images/keeping_skin_healthy_21940.png
L_0582
keeping the nervous system healthy
T_3124
FIGURE 1.1 Wear safety goggles or sunglasses to protect your eyes from injury. Wear hearing protectors, such as ear plugs to protect your ears from loud sounds. Wear a safety helmet for activities like bike riding and skating ( Figure 1.2). Wear a safety belt every time you ride in a motor vehicle. Avoid unnecessary risks, such as performing dangerous stunts on your bike. Never dive into water that is not approved for diving. If the water is too shallow, you could seriously injure your brain or spinal cord. A few minutes of fun could turn into a lifetime in a wheelchair.
image
textbook_images/keeping_the_nervous_system_healthy_21941.png
L_0582
keeping the nervous system healthy
T_3124
FIGURE 1.2
image
textbook_images/keeping_the_nervous_system_healthy_21942.png
L_0583
kidneys
T_3125
FIGURE 1.1
image
textbook_images/kidneys_21943.png
L_0583
kidneys
T_3126
FIGURE 1.2
image
textbook_images/kidneys_21944.png
L_0586
light reactions of photosynthesis
T_3136
FIGURE 1.1
image
textbook_images/light_reactions_of_photosynthesis_21952.png
L_0586
light reactions of photosynthesis
T_3139
FIGURE 1.2
image
textbook_images/light_reactions_of_photosynthesis_21953.png
L_0586
light reactions of photosynthesis
T_3141
FIGURE 1.3 Photosynthesis is a two stage process. As is depicted here, the energy from sun- light is needed to start photosynthesis. The initial stage is called the light reac- tions as they occur only in the presence of light. During these initial reactions, water is used and oxygen is released. The energy from sunlight is converted into a small amount of ATP and an en- ergy carrier called NADPH. Together with carbon dioxide, these are used to make glucose (sugar) through a process called the Calvin Cycle. NADP+ and ADP (and Pi, inorganic phosphate) are regenerated to complete the process.
image
textbook_images/light_reactions_of_photosynthesis_21954.png
L_0587
limiting factors to population growth
T_3142
FIGURE 1.1
image
textbook_images/limiting_factors_to_population_growth_21955.png
L_0590
male reproductive structures
T_3156
FIGURE 1.1
image
textbook_images/male_reproductive_structures_21965.png
L_0591
male reproductive system
T_3157
FIGURE 1.1 Testosterone, the main sex hormone in males, allows men to build larger muscles than women.
image
textbook_images/male_reproductive_system_21966.png
L_0599
menstrual cycle
T_3172
FIGURE 1.1
image
textbook_images/menstrual_cycle_21984.png
L_0601
microscopes
T_3177
FIGURE 1.1 Basic light microscopes opened up a new world to curious people.
image
textbook_images/microscopes_21986.png
L_0601
microscopes
T_3177
FIGURE 1.2
image
textbook_images/microscopes_21987.png
L_0601
microscopes
T_3178
FIGURE 1.3 A scanning electron microscope.
image
textbook_images/microscopes_21988.png
L_0606
mollusks
T_3189
FIGURE 1.1
image
textbook_images/mollusks_21996.png
L_0606
mollusks
T_3189
FIGURE 1.2
image
textbook_images/mollusks_21997.png
L_0607
muscles and exercise
T_3192
FIGURE 1.1 Anaerobic exercises involve the muscles working against resistance. In this case the resistance is the weight of a barbell.
image
textbook_images/muscles_and_exercise_21998.png
L_0607
muscles and exercise
T_3193
FIGURE 1.2 When done regularly, aerobic activities, such as cycling, make the heart stronger. Other aerobic activities include mowing lawn, shoveling snow and cross country skiing.
image
textbook_images/muscles_and_exercise_21999.png
L_0607
muscles and exercise
T_3194
FIGURE 1.3
image
textbook_images/muscles_and_exercise_22000.png
L_0608
muscles bones and movement
T_3195
FIGURE 1.1 The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes. To straighten the elbow, the triceps contract and the biceps relax.
image
textbook_images/muscles_bones_and_movement_22001.png
L_0610
nails and hair
T_3203
FIGURE 1.1
image
textbook_images/nails_and_hair_22003.png
L_0613
nervous system
T_3210
FIGURE 1.1
image
textbook_images/nervous_system_22008.png
L_0614
non infectious reproductive system disorders
T_3213
FIGURE 1.1
image
textbook_images/non_infectious_reproductive_system_disorders_22009.png
L_0616
nonrenewable resources
T_3217
FIGURE 1.1
image
textbook_images/nonrenewable_resources_22013.png
L_0616
nonrenewable resources
T_3217
FIGURE 1.2
image
textbook_images/nonrenewable_resources_22014.png
L_0619
organic compounds
T_3224
FIGURE 1.1
image
textbook_images/organic_compounds_22019.png
L_0619
organic compounds
T_3225
FIGURE 1.2
image
textbook_images/organic_compounds_22020.png
L_0619
organic compounds
T_3225
FIGURE 1.3 Amino acids connect together like beads on a necklace. MET, ASN, TRP, and GLN refer to four different amino acids.
image
textbook_images/organic_compounds_22021.png
L_0619
organic compounds
T_3225
FIGURE 1.4
image
textbook_images/organic_compounds_22022.png
L_0619
organic compounds
T_3226
FIGURE 1.5 Phospholipids in a membrane, shown as two layers (a bilayer) of phospholipids fac- ing each other.
image
textbook_images/organic_compounds_22023.png
L_0619
organic compounds
T_3227
FIGURE 1.6 A model representing DNA, a nucleic acid.
image
textbook_images/organic_compounds_22024.png
L_0621
organization of the human body
T_3232
FIGURE 1.1
image
textbook_images/organization_of_the_human_body_22029.png
L_0621
organization of the human body
T_3233
FIGURE 1.2
image
textbook_images/organization_of_the_human_body_22030.png
L_0623
origins of life
T_3242
FIGURE 1.1
image
textbook_images/origins_of_life_22034.png
L_0623
origins of life
T_3242
FIGURE 1.2
image
textbook_images/origins_of_life_22035.png
L_0624
outdoor air pollution
T_3243
FIGURE 1.1
image
textbook_images/outdoor_air_pollution_22036.png
L_0624
outdoor air pollution
T_3243
FIGURE 1.2
image
textbook_images/outdoor_air_pollution_22037.png
L_0624
outdoor air pollution
T_3245
FIGURE 1.3
image
textbook_images/outdoor_air_pollution_22038.png
L_0626
pathogens
T_3251
FIGURE 1.1
image
textbook_images/pathogens_22041.png
L_0626
pathogens
T_3251
FIGURE 1.2
image
textbook_images/pathogens_22042.png
L_0626
pathogens
T_3251
FIGURE 1.3
image
textbook_images/pathogens_22043.png
L_0626
pathogens
T_3251
FIGURE 1.4 The Herpes simplex virus, which is rep- resented here, causes cold sores on the lips. Viruses are extremely small parti- cles. This illustration is greatly magnified.
image
textbook_images/pathogens_22044.png
L_0626
pathogens
T_3252
FIGURE 1.5
image
textbook_images/pathogens_22045.png
L_0627
pedigree analysis
T_3255
FIGURE 1.1 In a pedigree, squares symbolize males, and circles represent females. A horizon- tal line joining a male and female indicates that the couple had offspring. Vertical lines indicate offspring which are listed left to right, in order of birth. Shading of the circle or square indicates an individual who has the trait being traced. In this pedigree, the inheritance of the recessive trait is being traced. A is the dominant allele, and a is the recessive allele.
image
textbook_images/pedigree_analysis_22047.png
L_0628
peripheral nervous system
T_3256
FIGURE 1.1 The blue lines in this drawing represent nerves of the peripheral nervous system. Every peripheral nerve is connected di- rectly or indirectly to the spinal cord. No- tice the thick sciatic nerve. It is the longest (and thickest) nerve in the body, running from the lower region of the spinal cord to just above the knee.
image
textbook_images/peripheral_nervous_system_22048.png
L_0628
peripheral nervous system
T_3257
FIGURE 1.2 The sensory division interprets messages from sense organs and internal organs, and the motor division sends messages to internal organs, glands, and muscles.
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textbook_images/peripheral_nervous_system_22049.png
L_0628
peripheral nervous system
T_3257
FIGURE 1.3
image
textbook_images/peripheral_nervous_system_22050.png
L_0628
peripheral nervous system
T_3258
FIGURE 1.4 These womens central nervous systems are controlling the movements of their hands and arms as they play the violin. Their brains send commands to their so- matic nervous system, which controls the muscles of their hands and arms.
image
textbook_images/peripheral_nervous_system_22051.png
L_0628
peripheral nervous system
T_3258
FIGURE 1.5 The woman pictured here is just pretend- ing to be frightened, but assuming that she really was scared, think of which di- vision of the autonomic nervous system would prepare her body for an emergency. your heart rate. The fact that this happened in the blink of an eye shows how amazing the nervous system is.
image
textbook_images/peripheral_nervous_system_22052.png
L_0637
polygenic traits
T_3277
FIGURE 1.1 Polygenic traits tend to result in a distribu- tion that resembles a bell-shaped curve, with few at the extremes and most in the middle. There may be 4 or 6 or more alleles involved in the phenotype. At the left extreme, individuals are com- pletely dominant for all alleles, and at the right extreme, individuals are completely recessive for all alleles. Individuals in the middle have various combinations of recessive and dominant alleles.
image
textbook_images/polygenic_traits_22067.png
L_0638
population growth patterns
T_3279
FIGURE 1.1
image
textbook_images/population_growth_patterns_22068.png
L_0638
population growth patterns
T_3280
FIGURE 1.2
image
textbook_images/population_growth_patterns_22069.png
L_0638
population growth patterns
T_3281
FIGURE 1.3 Usually, populations first grow exponentially while resources are abundant. But as populations increase and re- sources become less available, rates of growth slow down and slowly level off, reaching the carrying capacity. The carrying capacity is the upper limit to the population size that the environment can support. This type of growth is shown as an "S-shaped" curve below ( Figure 1.3) and is called logistic growth. Why do you think occurs?
image
textbook_images/population_growth_patterns_22070.png
L_0640
pregnancy and childbirth
T_3284
FIGURE 1.1
image
textbook_images/pregnancy_and_childbirth_22074.png
L_0640
pregnancy and childbirth
T_3286
FIGURE 1.2
image
textbook_images/pregnancy_and_childbirth_22075.png
L_0641
preserving water sources
T_3289
FIGURE 1.1
image
textbook_images/preserving_water_sources_22076.png
L_0642
preventing infectious diseases
T_3292
FIGURE 1.1 This picture shows the proper way to wash your hands. Frequent hand washing helps prevent the spread of pathogens. and wash your hands often to avoid spreading pathogens to other people. Dont go to work or school if youre vomiting, have diarrhea or are running a fever (and if you are, drink plenty of fluids). Also, to avoid infectious diseases, dont share personal items; use your own toothbrush, comb, and razor. And avoid sharing drinking glasses or dining utensils.
image
textbook_images/preventing_infectious_diseases_22078.png
L_0643
preventing noninfectious diseases
T_3293
FIGURE 1.1
image
textbook_images/preventing_noninfectious_diseases_22079.png
L_0645
process of cellular respiration
T_3298
FIGURE 1.1
image
textbook_images/process_of_cellular_respiration_22084.png
L_0646
processes of breathing
T_3305
FIGURE 1.1
image
textbook_images/processes_of_breathing_22085.png
L_0647
producers
T_3306
FIGURE 1.1
image
textbook_images/producers_22086.png
L_0654
recombinant dna
T_3321
FIGURE 1.1
image
textbook_images/recombinant_dna_22095.png
L_0655
reduce reuse and recycle
T_3323
FIGURE 1.1
image
textbook_images/reduce_reuse_and_recycle_22096.png
L_0655
reduce reuse and recycle
T_3325
FIGURE 1.2 These aluminum cans are packed to- gether in a recycling plant to be reused. If you have recycling in your community, make sure you separate aluminum, plastics, glass, and paper products. See if your school recycles. If not, you and some friends could start a recycling club, or organize efforts to better recycling goals.
image
textbook_images/reduce_reuse_and_recycle_22097.png
L_0656
renewable resources and alternative energy sources
T_3327
FIGURE 1.1 Wind power, a renewable resource, shown here in a modern wind energy farm. The wind is used to turn turbines that generate electricity.
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textbook_images/renewable_resources_and_alternative_energy_sources_22098.png
L_0656
renewable resources and alternative energy sources
T_3327
FIGURE 1.2 These solar panels convert sunlight into electricity.
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textbook_images/renewable_resources_and_alternative_energy_sources_22099.png
L_0656
renewable resources and alternative energy sources
T_3327
FIGURE 1.3 Hydropower plant.
image
textbook_images/renewable_resources_and_alternative_energy_sources_22100.png
L_0656
renewable resources and alternative energy sources
T_3327
FIGURE 1.4
image
textbook_images/renewable_resources_and_alternative_energy_sources_22101.png
L_0661
respiration
T_3340
FIGURE 1.1 Being able to control breathing is impor- tant for many activities, such as swim- ming. The woman in the photograph is exhaling as she exits the water.
image
textbook_images/respiration_22107.png
L_0661
respiration
T_3340
FIGURE 1.2 During respiration, oxygen gets pulled into the lungs and enters the blood by passing across the thin alveoli mem- branes and into the capillaries. The alve- oli are at the end of the long air passages.
image
textbook_images/respiration_22108.png
L_0662
respiratory system diseases
T_3342
FIGURE 1.1
image
textbook_images/respiratory_system_diseases_22109.png
L_0662
respiratory system diseases
T_3345
FIGURE 1.2 Asthma occurs when the bronchioles swell and the muscles around the bronchioles contract.
image
textbook_images/respiratory_system_diseases_22110.png
L_0662
respiratory system diseases
T_3346
FIGURE 1.3
image
textbook_images/respiratory_system_diseases_22111.png
L_0662
respiratory system diseases
T_3347
FIGURE 1.4
image
textbook_images/respiratory_system_diseases_22112.png
L_0662
respiratory system diseases
T_3349
FIGURE 1.5
image
textbook_images/respiratory_system_diseases_22113.png
L_0662
respiratory system diseases
T_3349
FIGURE 1.6
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textbook_images/respiratory_system_diseases_22114.png
L_0664
respiratory system organs
T_3356
FIGURE 1.1
image
textbook_images/respiratory_system_organs_22115.png