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Body Systems How is your body like a machine?. Let’s think back…. Why do all the body systems work together?

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Presentation on theme: "Body Systems How is your body like a machine?. Let’s think back…. Why do all the body systems work together?"— Presentation transcript:

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

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

6 Muscle Types SKELETALSMOOTHCARDIAC

7 How do you bend your elbow? 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? To what are muscles attached?

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

9 INTEGUMENTARY SYSTEM FunctionSystem Protection/Barrier Immune Protect Against Dehydration Excretory Cutaneous SensationNervous Regulate Body TempExcretory Excrete Sweat, Gases Excretory

10 Integumentary

11 How does skin vary in different organisms?

12 NERVOUS SYSTEM What are the functions? Respond to internal and external stimuli How does the nervous system work? What other systems are involved? all

13 The Brain Hypothalamus Brain Stem Cerebrum Cerebellum Medulla oblongata

14 EXCRETORY What are the functions? Detoxifies blood –Urea, water, salts, excess glucose, excess protein, CO 2 What other systems are involved? Circulatory Endocrine Nervous

15 Excretory Kidney Ureter Bladder Urethra Blood Urine

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

17 Reproductive Uterus Fallopian Tube Ovary Testes Penis Vagina

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

19 Endocrine Hypothalamus Thyroid Adrenal Pituitary Pancreas Ovary Testes

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

21 Circulatory Heart Vein Aorta (Artery) Capillary

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

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

24 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

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

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

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

28 What do we call the maintenance of an internal environment? Homeostasis

29 4 Major Themes in Maintaining Balance These 4 major themes are interrelated to help your body maintain homeostasis: –Feedback loops –Structure and function –Division of labor –Interdependence of organ systems

30 Feedback Loops Thermostat shuts off heater Room temperature falls Thermostat activates heater Warm air is produced Room temperature rises Thermostat feedback loop

31 Feedback Loops What happens to your body when you run outside in 100 o temperature?

32 Feedback Loops How does this happen? Blood vessels in skin dilate Sensors in the brain and skin detect a change in body temperature Sweat glands release more sweat Body temperature regulates stimulus response This is a stimulus-response Hormone message sent

33 Feedback Loops So….What are some of the things that feedback regulates? Feedback systems regulate: –Blood sugar (glucose) –Salt content in blood –Hormone production –Blood pressure –Ion content in blood –Water content in blood

34 Structure and Function How is the structure of your thumb related to its function?

35 Structure and Function TRY THIS! Put a rubber band around your hand so that the thumb cannot be used. Pick up your textbook and hand it to the student next to you. Now - pick up a penny without going to the edge of the desk or putting the penny up against something.

36 Structure and Function What is the function of plant leaves? Why are these leaves shaped differently? Maple leaf Conifer Cactus

37 Structure and Function The dolphin and the fish are unrelated organisms. Why do they have similar structures? Mammal - dolphin Fish – Queen snapper

38 Division of Labor How many people does it take to build a building?

39 Division of Labor You would need: –Architect –Construction workers –Foreman –Plumbers –Electricians –Painters Why do you need all of these people?

40 Division of Labor Why do you need so many different parts to digest your food?

41 Division of Labor Your body systems are divided into different parts. Each part has its own special function. This is called a Division of Labor.

42 Interdependence of Body Systems All the body systems work together to maintain homeostasis.


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