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Body Systems

Body Systems. How is your body like a machine?. Let ’ s think back…. Why do all the body systems work together?. To maintain homeostasis!. Four major themes. 1. feedback loops 2. structure and function 3. division of labor 4. interdependence of organ systems. SKELETAL SYSTEM.

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Body Systems

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  1. Body Systems How is your body like a machine?

  2. Let’s think back…. • Why do all the body systems work together?

  3. To maintain homeostasis!

  4. Four major themes • 1. feedback loops • 2. structure and function • 3. division of labor • 4. interdependence of organ systems

  5. SKELETAL SYSTEM • What are the functions? -produces red and white blood cells -movement -structural support -provide minerals • What other systems are involved? -muscular -immune circulatory

  6. MUSCULAR SYSTEM • What are the functions? • What other systems does it involve? -movement (body parts, digestion, circulation) -Skeletal -Nervous -Digestive -Circulatory

  7. Muscle Types SKELETAL SMOOTH CARDIAC

  8. How do you bend your elbow? To what are muscles attached? • The bicep muscle contracts, causing the elbow to bend. • The tricep muscle contracts, causing the elbow to straighten. This works similar to what simple machine?

  9. LYMPHATIC SYSTEM Helps protect the body from disease Collects fluid lost from blood vessels and returns the fluid to the circulatory system

  10. LYMPHATIC SYSTEM • What are the functions? • protect body from disease • contains white blood cells, antibodies and lymph

  11. INTEGUMENTARY SYSTEM Protection/Barrier Immune Protect Against Dehydration Excretory Cutaneous Sensation Nervous Regulate Body Temp Excretory Excrete Sweat, Gases Excretory

  12. Integumentary Hair Epidermis Sebaceous Gland Dermis Sweat Gland

  13. How does skin vary in different organisms?

  14. Dendrite NERVOUS SYSTEM Nucleus Cell body • Respond to internal and external stimuli • What are the functions? Axon • How does the nervous system work? • What other systems are involved? • all

  15. The Brain Cerebrum Hypothalamus Cerebellum Brain Stem

  16. EXCRETORY • Detoxifies blood • Urea, water, salts, excess glucose, excess protein • What are the functions? • What other systems are involved? • Circulatory

  17. Excretory Blood Kidney Ureter Urine Bladder Urethra

  18. REPRODUCTIVE • produce gametes • What are the functions? • produce hormones • secondary sex characteristics • What other systems are involved? • Endocrine

  19. Reproductive Ovary Fallopian Tube Uterus Testes

  20. ENDOCRINE • What are the functions? -produce hormones -deliver chemical messages through the body • What other systems are involved? • nervous • circulatory

  21. Endocrine Hypothalamus Pituitary Thyroid Adrenal Pancreas

  22. Release-inhibitinghormone Releasing hormone Production Stimulated Production Inhibited Thyroid stimulating hormone Thyroid Gland High thyroid hormone level Low thyroid hormone level Remember feedback loops? Hypothalamus(Brain)

  23. CIRCULATORY • transport:-gases-fluids-waste products-nutrients-hormones • What are the functions? • What other systems are involved? • Excretory • Respiratory • Endocrine

  24. Circulatory Capillary Heart Aorta (Artery) Vein

  25. RESPIRATORY • What are the functions? -exchange of carbon dioxide and oxygen between the blood, air and tissues • What other systems are involved? • Circulatory

  26. Where does gas exchange take place? Respiratory Alveoli Trachea Bronchi/Bronchioles Lungs Diaphragm

  27. DIGESTIVE • What are the functions? • to break down food into smaller particles with the help of enzymes so it can be absorbed and used by cells. • What other systems are involved? • Circulatory • Nervous

  28. Digestive Salivary Glands Mouth Esophagus Digestive Stomach Liver Pancreas Small Intestine Large Intestine Rectum

  29. Digestive ENZYMES • What substances help break down the food that you eat? Starch Amylase Monosaccharide Fatty Acids/ Glycerol Bile/Lipase Lipids Proteins Protease Amino Acids

  30. Digestive • Follow the path of food during digestion. • Where is food mechanically digested? Chemically digested?

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