1. Human Body Systems

2. Organization of The Body
The eleven organ systems of the human body work together to maintain homeostasis
Homeostasis – process which organisms maintain a relatively stable internal environment

3. Human Organ Systems Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

4. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

5. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

6. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

7. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

8. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

9. Nervous System Brain, Spinal cord, periperal nerves
Function: Coordinates the body’s response to changes in its internal and external environments

10. Nervous System Figure 35-2 Human Organ Systems Part I Section 35-1
Integumentary System
Skeletal System
Muscular System
Circulatory System

11. Integumentary System 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

12. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

13. Respiratory System
Nose, pharynx, larynx, trachea, bronchi, bronchiales, lungs
Function: Provides oxygen needed for cellular respiration and remove excess carbon dioxide from the body

14. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

15. Digestive System
Mouth, pharynx, esophagus, stomach, small and large intestine
Function: Converts foods into simpler molecules that can be used by the cells of the body; absorbs food

16. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

17. Excretory System
Skin, lungs, kidneys, ureters, urinary bladder, urethra
Function: Eliminates waste products of metabolism from the body; maintains homeostasis

18. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

19. Skeletal System Bones, cartilage, ligaments, tendons
Function: Supports the body; protects internal organs; allows movement; stores mineral reserves; provides a site for blood cell formation

20. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

21. Muscular System Skeletal muscle, smooth muscle, cardiac muscle
Function: Works with skeletal system to produce voluntary movement; helps to circulate blood and move food through the digestive system

22. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

23. Circulatory System Heart, Blood vessels, blood
Function: Brings oxygen, nutrients, and hormones to cells; fights infection; regulates body temperature

24. Figure 35-2 Human Organ Systems Part I
Section 35-1
Nervous System
Integumentary System
Skeletal System
Muscular System
Circulatory System

25. Endocrine System
Hypothalamus, pituitary, thyroid, parathyroids, adrenals, pancreas, ovaries(in females), testes (in males)
Function: Controls growth, development, metabolism, and reproduction

26. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

27. Reproductive System
Testes, epididymis, vas deferens, urethra, and penis (in males); Ovaries, fallopian tubes, uterus, vagina (in females).
Produces reproductive cells; in females, nurtures and protects developing embryo

28. Figure 35-2 Human Organ Systems Part 2
Section 35-1
Respiratory System
Digestive System
Excretory System
Endocrine System
Reproductive System
Lymphatic System

29. Lymphatic System
White blood cells, thymus, spleen, lymph nodes, lymph vessels
Helps protect the body from disease; collects fluid lost from blood vessels and returns the fluid to the circulatory system.