body systems how is your body like a machine?. lets think back…. why do all the body systems work...
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Body SystemsHow is your body like a
machine?
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Let’s think back….
• Why do all the body systems work together?
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To maintain homeostasis!
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Four major themes
• 1. feedback loops• 2. structure and function• 3. division of labor• 4. interdependence of organ
systems
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SKELETAL SYSTEM• What are the functions?
-produces red and white blood cells-movement
• What other systems are involved?
-structural support-provide minerals
-muscular-immunecirculatory
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MUSCULAR SYSTEM
• What other systems does it involve?
• What are the functions?-movement (body parts, digestion, circulation)
-Skeletal
-Digestive-Circulatory
-Nervous
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Muscle Types
SKELETAL SMOOTH CARDIAC
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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?
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LYMPHATIC SYSTEM
Helps protect the body from disease
Collects fluid lost from blood vessels and returns the fluid to the circulatory system
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LYMPHATIC SYSTEM• What are the
functions?• protect body from disease
• contains white blood cells, antibodies and lymph
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INTEGUMENTARY SYSTEM
Function System
Protection/Barrier Immune
Protect Against Dehydration
Excretory
Cutaneous Sensation Nervous
Regulate Body Temp Excretory
Excrete Sweat, Gases Excretory
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Integumentary
Epidermis
Dermis
Sebaceous Gland
Sweat Gland
Hair
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• How does skin vary in different organisms?
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NERVOUS SYSTEM• What are the functions?
• Respond to internal and external stimuli
• How does the nervous system work?
• What other systems are involved?• all
Nucleus
Dendrite
Axon
Cell body
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The Brain
Hypothalamus
Brain Stem
Cerebrum
Cerebellum
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EXCRETORY • What are the functions?
• Detoxifies blood–Urea, water, salts,
excess glucose, excess protein
• What other systems are involved?
• Circulatory
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ExcretoryKidney
Ureter
Bladder
Urethra
Blood
Urine
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REPRODUCTIVE• What are the functions?
• produce gametes
• secondary sex characteristics
• produce hormones
• What other systems are involved?
• Endocrine
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Reproductive
Uterus
Fallopian Tube
Ovary
Testes
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ENDOCRINE• What are the functions?
-deliver chemical messages through the body
-produce hormones
• What other systems are involved?
• nervous• circulatory
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EndocrineHypothalamus
Thyroid
Adrenal
Pituitary
Pancreas
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Remember feedback loops?Hypothalamus
(Brain)
Releasing hormone
Release-inhibitinghormone
Thyroid stimulating hormone
Thyroid Gland
Low thyroid hormone level
High thyroid hormone level
Production Stimulated
Production Inhibited
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CIRCULATORY• What are the functions?
- transport:-gases-fluids-waste products-nutrients-hormones
• What other systems are involved?• Excretory• Respiratory• Endocrine
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Circulatory
Heart
Vein
Aorta (Artery)
Capillary
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RESPIRATORY• What are the functions?
-exchange of carbon dioxide and oxygen between the blood, air and tissues
• What other systems are involved?• Circulatory
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Respiratory
Lungs
Diaphragm
Alveoli
Trachea
Bronchi/Bronchioles
• Where does gas exchange take place?
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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
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Digestive
Mouth
LiverStomach
Small Intestine
Large IntestineRectum
Esophagus
Pancreas
Salivary Glands
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Digestive• What substances help break
down the food that you eat? ENZYMES
Compound Enzyme Monomer
Starch
Lipids
Proteins
Bile/Lipase
Amylase
Protease
Monosaccharide
Fatty Acids/ Glycerol
Amino Acids
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Digestive
• Follow the path of food during digestion.
• Where is food mechanically digested? Chemically digested?