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Human Body Systems

Explore the functions of each human body system - Nervous, Immune, Endocrine, Integumentary, Skeletal, Muscular, Digestive, Excretory, Circulatory, Respiratory, and Reproductive. Learn how organs like the brain, skin, heart, and more work together to keep you healthy. Discover how these systems support, protect, nourish, and regulate your body to maintain balance and well-being. Dive into the intricate network of the human body systems and understand how they function harmoniously to sustain life.

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Human Body Systems

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  1. Human Body Systems Unit 14 10A

  2. Functions of Each System • Nervous – response • Integumentary – (skin) protection • Skeletal – support • Muscular – movement • Circulatory – transportation • Respiratory – gas exchange • Digestion – nutrients • Excretory – waste • Endocrine – (hormones) homeostasis • Reproductive – reproduction • Immune – (lymphatic) disease protection

  3. Nervous System Organs: brain, spinal cord, peripheral nerves Function: recognizes and coordinates the body’s response to changes in its internal and external environments

  4. Lymphatic/Immune System Organs: white blood cells, thymus, spleen, lymph nodes, lymph vessels Function: helps protect the body from disease; collects fluid lost from blood vessels and returns the fluid to the circulatory system

  5. Endocrine System Organs: hypothalamus, pituitary, thyroid, parathyroids, adrenals, pancreas, ovaries (females), testes (males) Function: controls growth, development, & metabolism; maintains homeostasis

  6. Integumentary System Organs: skin, hair, nails, sweat, and oil glands Function: serves as a barrier against infection and injury; helps to regulate body temperature; provides protection against ultraviolet radiation from the sun

  7. Skeletal System Organs: bones, cartilage, ligaments, tendons Function: protects organs, aids in movement, provides structure

  8. Muscular System Organs: skeletal muscle, smooth muscle, cardiac muscle Function: works w/ skeletal system to produce voluntary movement; helps to circulate blood and move food through the digestive system

  9. Digestive System Organs: mouth, pharynx, esophagus, stomach, small & large intestine; rectum Function: converts foods into simpler molecules that can be used by the cells of the body; absorbs food; eliminates wastes

  10. Excretory System Organs: skin, lungs, kidneys, ureters, urinary bladder, urethra Function: eliminates waste products from the body in ways that maintain homeostasis

  11. Circulatory System Organs: heart, blood vessels, blood Function: brings oxygen, nutrients, and hormones to cells; fights infection; removes cell wastes, helps to regulate body temperature

  12. Respiratory System Organs: nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs Function: provides oxygen needed for cellular respiration and removes excess carbon dioxide from the body

  13. Reproductive System Organs: males – testes, epididymis, vas deferens, urethra, penis females – ovaries, fallopian tubes, uterus, vagina Function: produces reproductive cells; females – nurtures & protects developing embryo

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