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2ND EDITION BY OPENSTAX |
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ALL 30 CHAPTERS | VERIFIED QUESTIONS &
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ANSWERS

,Table of Contents
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Unit I: Levels of Organization
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• ChapterV G 1:VGAnV G IntroductionVGtoV G theVGHumanV G Body
• ChapterV G 2:VGTheVGChemicalV G LevelVGofVG Organization
• ChapterV G 3:VGTheVGCellularV G LevelVGofVG Organization
• ChapterV G 4:VGTheVG TissueVGLevelV G ofV G Organization

Unit II: Support and Movement
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• ChapterV G 5:VGTheV G IntegumentaryV G System
• ChapterV G 6:VGBoneV G andVGSkeletalV G Tissue
• ChapterV G 7:VGTheVGAxialV G Skeleton
• ChapterV G 8:VGTheV G AppendicularVGSkeleton
• ChapterV G 9:VGJoints
• ChapterV G 10:VGMuscleVGTissue
• ChapterV G 11:VGTheV G MuscularVGSystem

Unit III: Regulation, Integration, and Control
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• ChapterV G 12:VGNervousVGTissue
• ChapterV G 13:VGTheV G AnatomyV G ofVGtheV G NervousV G System
• ChapterV G 14:VGTheVG SomaticV G NervousV G System
• ChapterV G 15:VGTheV G AutonomicV G NervousV G System
• ChapterV G 16:VGTheVG NeurologicalV G Exam
• ChapterV G 17:VGTheVG EndocrineV G System

Unit IV: Fluids and Transport
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• ChapterV G 18:VGTheV G CardiovascularV G System:V G Blood
• ChapterV G 19:VGTheV G CardiovascularV G System:V G TheV G Heart
• ChapterV G 20:VGTheV G CardiovascularV G System:V G BloodV G VesselsV G andV G Circulation
• ChapterV G 21:VGTheVG LymphaticV G SystemVGandVGImmunity

Unit V: Energy, Maintenance, and Environmental Exchange
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• ChapterV G 22:VGTheVG RespiratoryV G System
• ChapterV G 23:VGTheVG DigestiveVG System
• ChapterV G 24:VGNutritionV G andVG Metabolism
• ChapterV G 25:VGTheVGUrinaryV G System
• ChapterV G 26:VGFluid,V G Electrolyte,V G andV G Acid–BaseVGBalance

Unit VI: Human Development and the Continuity of Life
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• ChapterV G 27:VGTheV G ReproductiveV G System
• ChapterV G 28:VGDevelopmentV G andV G GeneticV G Inheritance
• ChapterV G 29:VGDevelopmentV G andV G Inheritance
• ChapterV G 30:VGPregnancyV G andVGChildbirth

,Chapter 1: An Introduction to the Human Body
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1. The study of the structure of body parts and their relationships is called:
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A. Anatomy
B. Physiology
C. Pathology
D. Biochemistry

Answer: A. Anatomy
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Rationale: Anatomy focuses on body structures; physiology studies functions.
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2. Which of the following best describes physiology?
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A. Study of the body’s chemical composition
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B. Study of the function of body parts
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C. Study of external landmarks
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D. Study of tissues under a microscope
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Answer: B. Study of the function of body parts
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Rationale: Physiology examines how organs and systems work to sustain life.
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3. The smallest structural unit of life is the:
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A. Atom
B. Cell
C. Tissue
D. Organ

Answer: B. Cell VG VG



Rationale: Cells are the basic unit of life; atoms form molecules, but are not alive.
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4. Which level of organization consists of groups of similar cells performi
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ng a common function?
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A. Organ level VG



B. Tissue level VG



C. Chemical level VG



D. Organ system VG




Answer: B. Tissue level
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Rationale: Tissues are composed of similar cells with a shared role.
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, 5. The process by which the body maintains stable internal conditions is called:
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A. Homeostasis
B. Metabolism
C. Differentiation
D. Catabolism

Answer: A. Homeostasis
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Rationale: Homeostasis keeps internal conditions stable despite external changes.
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6. A negative feedback mechanism:
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A. Enhances the original stimulus
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B. Reverses a change toward normal conditions
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C. Causes rapid deviations
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D. Leads to homeostatic imbalance
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Answer: B. Reverses a change toward normal conditions
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Rationale: Negative feedback maintains stability by reversing deviations.
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7. The anatomical position is characterized by:
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A. Standing with palms facing forward
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B. Sitting with hands on lap
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C. Lying down with palms downward
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D. Standing with arms crossed
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Answer: A. Standing with palms facing forward
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Rationale: Standard anatomical position ensures consistency in descriptions.
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8. Which directional term means “toward the head”?
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A. Inferior
B. Superior
C. Posterior
D. Distal

Answer: B. Superior
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Rationale: Superior means above; inferior means below.
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9. The sternum is
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A. Anterior
B. Posterior