Understanding Word Parts

MEDICAL TERMINOLOGY OVERVIEW

  • Medical terminology is essential jargon used in health care.

  • It encompasses words related to:

    • Body systems

    • Anatomy

    • Medical and surgical procedures

    • Diseases and disorders

  • Serves as a communication tool between health care professionals, converting layman terms into medical terms.

  • Learning medical terminology parallels learning a new language, primarily rooted in Greek and Latin origins.

COMPONENTS OF MEDICAL TERMS

Basic Components

  • Word Roots: Fundamental unit providing core meaning (e.g., cardi = heart, hepat = liver).

  • Suffixes: Modify or add meaning, usually found at the word's end (e.g., -itis = inflammation).

  • Prefixes: Modify the root by indicating location, number, or time (e.g., pre- = before).

  • Combining Vowels: Typically 'o', used for ease of pronunciation between word roots and suffixes.

Word Construction Rules

  • Most medical terms consist of combinations of these four components.

  • Analyzing terms involves breaking them into parts: prefix, root, and suffix.

  • Practice involves constructing and deconstructing terms (e.g., cardiology = cardi/o + -logy).

COMMON PREFIXES

  • Pre-: Before

  • Intra-: Within

  • Hyper-: Excessive

  • Hypo-: Deficient

  • Sub-: Below

  • Inter-: Between

COMMON SUFFIXES

  • -itis: Inflammation (e.g., bronchitis)

  • -ectomy: Surgical removal (e.g., appendectomy)

  • -oma: Tumor (e.g., melanoma)

  • -emia: Blood condition (e.g., anemia)

BODY STRUCTURE AND ORGANS

Levels of Organization

  • Cells: Basic structural and functional units of life.

  • Tissues: Groups of similar cells performing a specific function.

  • Organs: Combinations of different tissues forming a functional unit.

  • Systems: Groups of organs performing related functions.

Types of Tissues

  1. Epithelial: Covers body surfaces; protects and secretes.

  2. Connective: Supports and binds other tissues (e.g., bone, blood).

  3. Muscle: Facilitates movement (striated, smooth, cardiac).

  4. Nervous: Conducts impulses throughout the body.

CARDIOVASCULAR SYSTEM

Key Components

  • Heart: Pumps blood through the body; consists of four chambers: atria and ventricles.

  • Blood Vessels: Arteries carry blood away; veins return it; capillaries facilitate exchange.

  • Blood: Composed of plasma and formed elements (RBCs, WBCs, platelets).

Common Conditions

  • Hypertension: High blood pressure.

  • Arteriosclerosis: Thickening and hardening of artery walls.

  • Cardiomegaly: Enlargement of the heart.

DIGESTIVE SYSTEM

Components

  • Digestive Tract: Continuous tube from mouth to anus.

  • Accessory Organs: Liver, gallbladder, pancreas, involved in digestion.

Common Conditions

  • Gastroesophageal reflux disease (GERD): Acid reflux.

  • Appendicitis: Inflammation of the appendix.

RESPIRATORY SYSTEM

Structure

  • Upper Tract: Nose, sinuses, pharynx, larynx.

  • Lower Tract: Trachea, bronchi, lungs.

Key Functions

  • Gas exchange: Oxygen intake and carbon dioxide elimination.

  • Regulation of acid-base balance.

NERVOUS SYSTEM

Division

  • Central Nervous System (CNS): Brain and spinal cord.

  • Peripheral Nervous System (PNS): Nerves outside the CNS connecting it to limbs and organs.

Key Functions

  • Controls and coordinates body activities.

INTEGUMENTARY SYSTEM

Components

  • Composed of skin and accessory structures (hair, nails).

Functions

  • Protection, sensation, temperature regulation.

URINARY SYSTEM

Components

  • Kidneys: Major organs for filtration.

  • Ureters, bladder, urethra: Pathways for urine elimination.

  • Common Conditions:

    • Cystitis, nephritis, dysuria.

MUSCULOSKELETAL SYSTEM

Components

  • Bones: Framework providing support and protection.

  • Muscles: Facilitates movement.

Common Conditions

  • Arthritis, osteoporosis, strains.

  • Understanding medical terminology is vital for effective communication in health services and enhances professional interactions.