Challenge Problem

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Challenge Problem

1. The function of the urinary system is to___
2. T/F- the heart and blood vessels belong to the
   muscular system
3. Give an example of when the nervous system is
   used.
4. Lungs and the trachea are part of the ____
5. Why is the integumentary system important?

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The Human Body

• An Orientation
• Part 1

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Review

• What is Anatomy?
• Give an example of Anatomy of the Cardiovascular
  System
• What is Physiology?
• Give an example of Physiology of the Digestive
  System

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• Get out system notes from Friday
• If you need to get your poster do so now.

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Overview

• Levels of Structural Organization
• Maintaining Life
• Homeostasis

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Levels of Structural Organization

• What is the smallest thing known to Humankind?
• What are ALL THINGS (living and non-living) made
  of?

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From Atoms to Organisms

• 1) Atoms
• Tiny building blocks of matter
• 2) Cells
• The smallest unit of living things
• 3) Tissues
• A group of similar cells that have a common
  function

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From Atoms to Organisms

• 4) Organ
• Made of two or more tissues and performs a
  specific function for the body
• 5) Organ System
• A group of organs that cooperate to accomplish a
  common purpose
• 6) Organism
• A group of organ systems that make up the highest
  level of living structural organization

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The Human Organism

• Without looking at your notes,
• Can you name all 11 organ systems that make up
  the human organism?

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Body Systems

• Skeletal System
• Muscular System
• Nervous System
• Endocrine System
• Cardiovascular System
• Lymphatic System
• Respiratory System
• Digestive System
• Urinary System
• Reproductive System
• Integumentary system

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Maintaining Life- stuff we have to do

• 1) Maintaining Boundaries
• Organisms must keep their insides separate from
  the outside
• Which Human Body System maintains this essential
  boundary?
• Why is maintaining a boundary important?

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Maintaining Life

• 2) Movement
• Necessary for motility and to perform bodily
  functions such as digestion and pumping blood.
• Which Human Body System is responsible for
  movement?
• Why is motility important?

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Maintaining Life

• 3) Responsiveness
• The ability to sense changes in the environment
  and react to them
• What TWO Human Body Systems are responsible for
  responsiveness?
• Why is responsiveness important?

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Maintaining Life

• 4) Digestion
• The process of breaking down food into molecules
  that can be used by the body
• 5) Metabolism
• All chemical reactions that occur in the body
• 6) Excretion
• The process of removing wastes from the body

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Maintaining Life

• Why is it important to be able to break down food
  through digestion?
• Why do you think chemical reactions are necessary
  in the body?
• Why is it important to be able to excrete waste
  from the body?

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Maintaining Life

• 7) Reproduction
• The production of offspring
• Why is reproduction an important function of the
  body?

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Maintaining Life

• 8) Growth
• An increase in size
• Why is growth an important aspect of living
  things?

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Maintaining Life- stuff we need

• Survival Needs
• Nutrients
• Oxygen
• Water
• Body Temperature
• Atmospheric Pressure

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Challenge Problem- 9/4/14

• 1. Older people with diabetes will often end up
  with kidney failure. What would result if a
  person loses function of their kidneys?
• 2. Compare the urinary system and the digestive
  system. (how are they similar?)
• 3. Contrast the integumentary system and the
  skeletal system. (how are they different?)

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FLT

• I will be able to tell my partner what
  Homeostasis is and give and example of how it is
  controlled by taking notes and a quiz before I
  get out of class

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Homeostasis

• What do you think Homeostasis means?

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Homeostasis

• Homeostasis
• The bodys ability to maintain relatively stable
  internal conditions despite ever-changing
  external conditions
• In your notes, write a definition with an example
  in your own words.

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Brainpop

• Take 2 minutes and see if you can answer the
  questions before we we watch the video

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Homeostasis

• How do we control Homeostasis?
• Negative Feedback Loops (Feedback Inhibition)
• A system in which the effect of a stimulus turns
  off or reduces the original stimulus
• Lets look at an example

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Feedback Inhibition LoopA home heater
Thermostat senses temp. increase and switches
heater off
Room Temp. Increases
Room Temp. Decreases
Thermostat senses temperature decrease and
switches heater on
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How is the house heater like the Human Body?

• What happens to you when you get very cold?

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Feedback Inhibition LoopYour Body - too COLD
Your body stops shivering (Thermostat OFF)
BODY Temp. Increases to normal
BODY Temp. Decreases too much
Your body shivers and shakes to warm you
(thermostat ON)
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• What about when you get too hot? What happens?

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Feedback Inhibition LoopYour Body - too HOT
Your body produces sweat to cool you.
BODY Temp. Increases too much
BODY Temp. Decreases to normal
Your body stops producing sweat
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Feedback Inhibition

• Feedback inhibition is a process utilized by many
  body systems in order to maintain homeostasis.

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Homeostasis

• Write in your notes an example that will help you
  remember what Negative Feedback is.
• What happens when our bodies are unable to
  maintain homeostasis? (Homeostatic Imbalance)

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Quick Quiz 5 min

• 1. Name the 6 levels of living structural
  organization.
• 2. Name one of the requirements for maintaining
  life(functions), and say why it is important.
• 3. Give a definition for Homeostasis IN YOUR OWN
  WORDS
• 4. Give an example of a Negative Feedback Loop
• Why are they needed/why are they important