Anatomy and Physiology
By Dr. Akash Garg, DC, MS Pharmacology, MEd, MBA · Updated October 20, 2026
The human body, system by system. Free to read, practice and play, with no sign-up.
28chapters
27animated modules
168interactives
594flashcards
1game
See It: Anatomy and Physiology
Start watchingWatch it happen
See the body work, chapter by chapter. 27 animated walkthroughs, each with a hands-on lab. Pause, slow down or have it read aloud.
- 1Body basics
- 2Body chemistry
- 3Cells
- 4Tissues
- 5Skin and burns
- 6Bone tissue
- 7The skeleton
- 8Joints
- 9Muscle contraction
- 10The muscular system
- 11Action potentials
- 12Nervous system anatomy
- 13Senses and reflexes
- 14Autonomic nervous system
- 15The neuro exam
- 16Endocrine
- 17Blood
- 18The heart
- 19Blood vessels
- 20Lymphatic and immune
- 21Respiratory
- 22Digestion
- 23Metabolism
- 24Urinary
- 25Fluid and acid-base
- 26Reproductive
- 27Development and inheritance
Study tools
Interactive textbookRead online or save the whole book as a PDF.Labs and interactivesHands-on activities for every chapter.Easy Read editionThe same book in plain language, with flashcards and practice exams.594 Study Terms flashcardsSpaced review that brings back what you are about to forget.168 lecture slide decksShort topic decks for review or teaching.Physiology calculatorsCalculators that show their working.Akash Anatomy 3D atlasTurn, hide and search 3,687 structures in 3D.
Play
Anatomy and PhysiologyKingdom of CorpusA pixel adventure across fifteen lands of the body, with physiology shrines, two phase guardians, villager cases and 900 questions.
On the wayAnatomy and PhysiologyAnatomy QuestAnatomy Quest 1 and 2 and BodyQuest rebuilt as one fast A&P review game.Advertisement
Chapters
- 1An Introduction to the Human BodyLevels of organization, the organ systems, homeostasis & the language of anatomy
- 2The Chemical Level of OrganizationAtoms, bonds, reactions, water, pH & the molecules of life
- 3The Cellular Level of OrganizationThe membrane, transport, organelles, protein synthesis & the cell cycle
- 4The Tissue Level of OrganizationThe four tissue types — epithelial, connective, muscle & nervous
- 5The Integumentary SystemSkin layers & strata, melanin, accessories, functions, burns & cancer
- 6Bone Tissue & the Skeletal SystemBone shapes, long-bone anatomy, remodeling, calcium & fractures
- 7The Axial SkeletonThe skull, vertebral column, thoracic cage & spinal curvatures
- 8The Appendicular SkeletonThe pectoral & pelvic girdles and the bones of the limbs
Show all 28 chapters
- 9JointsJoint classes, the synovial joints, structure & body movements
- 10Muscle TissueMuscle organization, the sarcomere, sliding filament, the NMJ & fiber types
- 11The Muscular SystemHow muscles work together, naming, and the major muscle groups
- 12The Nervous System & Nervous TissueNeuroglia, membrane & action potentials, conduction & the synapse
- 13Anatomy of the Nervous SystemCerebral lobes, brain regions, ventricles, meninges, cord & cranial nerves
- 14The Somatic Nervous SystemSensory receptors, the eye & ear, taste & smell, and the reflex arc
- 15The Autonomic Nervous SystemSympathetic vs parasympathetic, pathways, neurotransmitters & reflexes
- 16The Neurological ExamMental status, cranial nerves, sensory, motor, coordination & gait
- 17The Endocrine SystemGlands, hormone action, the pituitary/thyroid/adrenal axes & blood glucose
- 18The Cardiovascular System: BloodBlood composition, cells, hematopoiesis, oxygen transport & clotting
- 19The Cardiovascular System: The HeartHeart anatomy, blood flow, valves, conduction, the cardiac cycle & ECG
- 20Blood Vessels & CirculationVessel structure, artery/vein/capillary, blood pressure & capillary exchange
- 21The Lymphatic & Immune SystemLymphatic organs, the lines of defense, inflammation, T & B cells
- 22The Respiratory SystemThe airway, alveoli, breathing mechanics, gas exchange & lung volumes
- 23The Digestive SystemThe GI tract, peristalsis, stomach, villi, accessory organs & digestion
- 24Metabolism & NutritionMetabolism, cellular respiration, metabolic states, nutrients & energy
- 25The Urinary SystemKidney & nephron anatomy, urine formation & hormonal control
- 26Fluid, Electrolyte & Acid-Base BalanceFluid compartments, water & electrolytes, pH buffers & acid-base disorders
- 27The Reproductive SystemMale & female anatomy, gametogenesis, the menstrual cycle & meiosis
- 28Development & InheritanceFertilization, early development, germ layers, pregnancy & inheritance
Written by Dr. Akash Garg
Doctor of Chiropractic, MS in Pharmacology, MEd and MBA. Teaching college science since 2007.