The document outlines several human body systems including the circulatory, endocrine, immune, excretory, skeletal muscular, and respiratory systems. The circulatory system transports oxygenated and deoxygenated blood through the heart, arteries, veins and capillaries. The endocrine system regulates the body through glands and hormones. The immune system protects the body through antigens, antibodies, and macrophages. The excretory system removes waste from the body using the kidneys, ureters, bladder and skin. The skeletal muscular system provides structure, movement and protection using bones, muscles, cartilage and joints. The respiratory system intakes and exchanges gases using the nasal cavity, pharynx, larynx, trachea, bron

1. Human body systems How systems work

2. Overview of the Body Systems

3. The Circulatory System The Parts: Heart Arteries Arterioles Veins Venules Capillaries

4. Deoxygenated Oxygenated

6. Endocrine System The Parts: Glands Hormones

7. Lots of surface in a small space

8. Diabetes - Feedback Mechanisms

9. The Immune System The Parts: Antigens Antibodies Macrophages

11. How Immunity Works

12. The Excretory System The Parts: Kidneys Ureters Bladder Urethra Skin Lungs

14. It’s all about diffusion

15. The Skeletal Muscular System The Parts: Bones Muscles Cartilage Joints Ligaments Tendons

17. The Respiratory System The Parts: Nasal Cavity Pharynx, Larynx Trachea Bronchi Bronchioles Alveoli

19. How it works

20. Watch the air pressure

21. It’s all about Diffusion