Maintaining Life: Necessary Life Functions
- Maintaining Boundaries
- Boundaries separate the “inside” from the “outside”
- Movement
- Locomotion
- Movement of substances
- Responsiveness (Irritability)
- Ability to sense changes and react
- Action/Reaction to change in environment
- Both internal and external
- Digestion
- Breakdown and absorption of nutrients
- DNA, Carbohydrates, Lipids, etc.
- Works with metabolism
- Metabolism - chemical reactions within the body
- Breaks down complex molecules into smaller ones
- Builds larger molecules from smaller ones
- Produces Energy (ATP)
- Regulated by hormones
- Long lasting effects on chemical reaction within body that deal with
absorption of nutrients for use (ex: glucose)
- Compromises ATP production
- Excretion
- Elimination of waste
- Urine, feces, sweat
- Eliminates excreta (waste) from metabolic reactions
- Reproduction
- Making another human
- Number of cells (Mitosis/Meiosis)
- Occurs on a cellular level / organismal level
- Cellular Level– new cells are used for growth and repair
- Organismal Level– the reproductive system handles the task
- Growth
- Maintaining Boundaries
- Boundaries separate the “inside” from the “outside”
- Movement
- Locomotion
- Movement of substances
- Responsiveness (Irritability)
- Ability to sense changes and react
- Action/Reaction to change in environment
- Both internal and external
- Digestion
- Breakdown and absorption of nutrients
- DNA, Carbohydrates, Lipids, etc.
- Works with metabolism
- Metabolism - chemical reactions within the body
- Breaks down complex molecules into smaller ones
- Builds larger molecules from smaller ones
- Produces Energy (ATP)
- Regulated by hormones
- Long lasting effects on chemical reaction within body that deal with
absorption of nutrients for use (ex: glucose)
- Compromises ATP production
- Excretion
- Elimination of waste
- Urine, feces, sweat
- Eliminates excreta (waste) from metabolic reactions
- Reproduction
- Making another human
- Number of cells (Mitosis/Meiosis)
- Occurs on a cellular level / organismal level
- Cellular Level– new cells are used for growth and repair
- Organismal Level– the reproductive system handles the task
- Growth
