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    Human Anatomy Essentials: Systems and Homeostasis

    Preview

    A clear tour of the major body systems and how they work together to maintain balance.

    14 content steps
    5 quizzes
    ~285 minutes
    Popular

    Journey Overview

    Preview what you'll learn in this journey

    Journey Steps

    Preview
    1

    Content Step 1

    Content
    Levels of organization: cells, tissues, organs, systems
    2

    Content Step 2

    Content
    Homeostasis and feedback loops in plain language
    3

    Content Step 3

    Content
    Skeletal system basics: bones, joints, and movement
    4

    Quiz 4

    Quiz
    Checkpoint Quiz
    5

    Content Step 5

    Content
    Muscular system: contraction, types of muscle, and energy
    6

    Content Step 6

    Content
    Cardiovascular system: heart, vessels, and circulation
    7

    Content Step 7

    Content
    Respiratory system: gas exchange and breathing mechanics
    8

    Quiz 8

    Quiz
    Checkpoint Quiz
    9

    Content Step 9

    Content
    Digestive system: from ingestion to absorption
    10

    Content Step 10

    Content
    Urinary system: kidneys, filtration, and fluid balance
    11

    Content Step 11

    Content
    Endocrine system: hormones and signaling
    12

    Quiz 12

    Quiz
    Checkpoint Quiz
    13

    Content Step 13

    Content
    Nervous system overview: CNS vs PNS and integration
    14

    Content Step 14

    Content
    Immune system overview: defenses and protection
    15

    Content Step 15

    Content
    Reproductive system basics and developmental overview
    16

    Quiz 16

    Quiz
    Checkpoint Quiz
    17

    Content Step 17

    Content
    How systems coordinate under exercise and stress
    18

    Content Step 18

    Content
    Lifestyle links: sleep, nutrition, and activity
    19

    Quiz 19

    Quiz
    Checkpoint Quiz

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