Systems of human body

Systems of human body

1. Systems of Human body Presented by, K. Sai lakshmi B-pharmacy Balaji college of pharmacy

2. Definition: Body systems are groups of organs and tissues that work together to perform important jobs for the body. Some organs may be part of more than one body system if they serve more than one function The human body consists of  twelve  organ systems, each of which contains several functions and specific organs.

3. 1. Digestive system 2. Circulatory system 3. Nervous system 4. Excretory system 5. Respiratory system 6. Skeletal system 7. Muscular system 8. Endocrine system 9. Immune system 10. Integumentary system 11. Lymphatic system 12. Reproductive system

4. 1. Digestive system

5. Functions of Digestive system Ingestion of food. Digest food into smaller molecules and absorb nutrients. Remove undigestible food from body (feces ). Major organs: Mouth Esophagus Stomach Small Intestine Large intestine Rectum anus Salivary glands Pancreas Liver and gall bladder

6. 2. Circulatory system

7. Functions: Transport oxygen and nutrients to and from cells/tissues. Remove waste products. Major organs: Heart Veins Arteries Capillaries Red blood cells

8. 3. Nervous system

9. Functions: Gathers and interprets information Responds to information Helps maintain homeostasis Coordinates activities of other organ systems Major organs: Brain Spinal cord Nerves Eyes Ears

10. 4. Excretory system

11. Functions: Removes waste products from cellular metabolism(urea,water,CO 2 ) Regulates pH and volume of blood. Filters blood Major organs: Kidneys Ureters Bladder Urethra

12. 5. Respiratory system

13. Functions: Exchange of gases(oxygen and carbon dioxide) Removes water Major organs: Nose Trachea Bronchi Bronchioles Alveoli Lungs

14. 6. Skeletal system

15. Functions: Protects Organs Provides Shape, Support Stores Materials (Fats, Minerals) Produces Blood Cells Allows Movement Major Organs: Bones Cartilage Ligaments Bone marrow

16. 7. Muscular system

17. Functions: Allows for movement by contracting Locomotion Heat production Major organs: Cardiac muscle Smooth muscle Skeletal muscle Tendons

18. 8. Endocrine system

19. Functions: Regulates body activities using hormones. Slow response, long lasting Major organs: Hypothalamus gland Pituitary gland Thyroid gland Thymus gland Adrenal gland Pancreas Ovaries Testes

20. 9. Immune system

21. Functions: Fights off foreign invaders in the body Major organs : White Blood Cells T cells B cells - produce antibodies Macrophages

22. 10. Integumentary system

23. Functions: Barrier against infection Helps regulate body temperature Removes excretory waste(urea, water) Protects against sun’s uv rays Produces vitamin D Major organs: Skin Epidermis Dermis Sweat gland Sebaceous gland (oil) Hair follicle Blood vessels Nerves

24. 11. Lymphatic system

25. Functions: Stores and carries WBC’s that fight disease. Collects excess fluid and returns it to blood (2 nd circulatory system-reaches places other one can’t between cells). Major organs: Lymph Lymph vessels Lymph nodes Spleen Thymus

26. 12. Reproductive system

27. Functions : Produce germ cells(eggs & sperms) Environmental for growth of fetus(female) Major organs: Ovaries Uterus Mammary glands Testis Prostate glands External genitalia