Introduction to Anatomy and Physiology

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Chapter 1

• Introduction to Anatomy and Physiology

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Anatomy

• Examines the morphology (or structures) of the
  body.
• Form and organization of organisms.

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Physiology

• Examines the functions of the body.
• What do structures do?
• Why do structures do the things they do?

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Anatomy and Physiology

• Anatomy and physiology are interconnected and
  depend on one another for life to exist.
  (Structure is related to function.)

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Examining Organisms as Parts to Whole

• Atoms
• Building blocks of matter.
• Composed of subatomic particles.
• Form molecules which group together to form
  macromolecules.

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Examining Organisms as Parts to Whole

• Cells
• Basic units of structure and function in
  organisms.
• Vary in characteristics such as size and shape.
• All cells contain organelles that carry out
  specific functions.
• Remember that organelles are made out of large
  molecules such as proteins, carbohydrates,
  lipids, and nucleic acids.
• Most cells have a complete set of genetic
  instructions but only use a subset of the
  instructions, which allows the cell develop
  specialized functions.

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Examining Organisms as Parts to Whole

• Tissues
• Masses or layers of cells that all have similar
  functions.

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Examining Organisms as Parts to Whole

• Organs
• Groups of similarly functioning tissues.

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Examining Organisms as Parts to Whole

• Organ Systems
• Groups of organs working together to perform
  specific functions.

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Examining Organisms as Parts to Whole

• Organisms
• Groups of interacting organ systems.

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