Key Concepts in Biology Basics

  • Biology Overview

    • Study of living things (structure, growth, origin, evolution, distribution)
    • Essential for understanding human body and medical terminology

  • Anatomy

    • Science of the structure of the body
    • Types:
    • Gross Anatomy: Visible parts (macroscopic), e.g., organs' location and morphology
    • Microscopic Anatomy: Study of cells and tissues using a microscope, includes:
      • Cytology: Study of cells
      • Histology: Study of tissues

  • Physiology

    • Study of how the body works (functions of organs, tissues, cells)
    • Types:
    • Macroscopic Physiology: Gross
    • Microscopic Physiology: Cell physiology

  • Pathology

    • Study of abnormalities in anatomy and physiology
    • Abnormal Physiology: Pathophysiology
    • Abnormal Anatomy: Pathological anatomy

  • Relationships Between Anatomy, Physiology, and Pathology

    • Normal Anatomy, Abnormal Physiology: e.g., diabetes
    • Abnormal Anatomy, Normal Physiology: e.g., healthy dwarf
    • Abnormal Anatomy, Abnormal Physiology: e.g., alcoholic liver disease
    • Diagnosis often requires both anatomical and physiological abnormalities to be pathologic
    • Example: Early colds show abnormal physiology before manifesting as anatomical changes (like swelling).