Medical Terminology in Anatomy & Physiology

Introduction to Medical Terminology

Medical terminology is essential for understanding the language used in anatomy, physiology, and clinical practice. Terms are often constructed from prefixes, suffixes, and word roots, each contributing specific meaning to the overall term. Mastery of these components aids in interpreting medical conditions, procedures, and anatomical references.

Common Suffixes and Their Meanings

• -ist: Indicates a specialist in a particular field. Example: Dermatologist is a specialist in diagnosing and treating skin disorders.

• -itis: Refers to inflammation. Example: Arthritis is inflammation of a joint.

• -ectomy: Denotes surgical removal of a body part. Example: Appendectomy is the surgical removal of the appendix.

• -rrhaphy: Means surgical suturing. Example: Herniorrhaphy is the surgical repair of a hernia.

• -algia: Indicates pain. Example: Neuralgia is pain along a nerve.

• -stomy: Refers to the creation of an artificial opening. Example: Colostomy is the creation of an opening from the colon to the body surface.

• -sclerosis: Means hardening. Example: Arteriosclerosis is the hardening of arteries.

• -cytosis: Refers to an abnormal increase in cells. Example: Leukocytosis is an increase in white blood cells.

• -emia: Indicates a condition of the blood. Example: Hypoglycemia is a low level of sugar in the blood.

• -mycosis: Refers to a condition caused by fungus. Example: Dermatomycosis is a fungal infection of the skin.

• -rrhea: Refers to a flow or discharge. Example: Diarrhea is excessive discharge of feces.

• -myorrhexis: Refers to rupture of a muscle.

Common Prefixes and Their Meanings

• Hypo-: Means below or deficient. Example: Hypoglycemia is a low level of sugar in the blood.

• Retro-: Means behind or backward. Example: Retroperitoneal means located behind the peritoneum.

• Poly-: Means many or much. Example: Polyneuropathy is a condition affecting many nerves.

• Hyper-: Means above, excessive, or increased. Example: Hypertension is increased blood pressure.

• Neo-: Means new. Example: Neonatologist specializes in the care of newborns.

• Cyan-: Means blue. Example: Cyanosis is a bluish discoloration of the skin due to lack of oxygen.

Common Word Roots

• my/o: Refers to muscle. Example: Myopathy is a disease of muscle tissue.

• gastr/o: Refers to the stomach. Example: Gastrectomy is surgical removal of the stomach.

• enter/o: Refers to the intestine. Example: Enteritis is inflammation of the intestine.

• melan/o: Refers to black or dark. Example: Melanocyte is a cell that produces melanin.

Application: Interpreting Medical Terms

Understanding the components of medical terms allows students to deduce the meaning of unfamiliar words. For example, "polioencephalomyelitis" can be broken down as follows:

• polio-: gray

• encephalo-: brain

• myel-: spinal cord

• -itis: inflammation

Thus, "polioencephalomyelitis" is inflammation of the gray matter of the brain and spinal cord.

Key Table: Medical Term Components and Examples

Examples and Applications

• Gastrosis: Refers to an abnormal condition of the stomach.

• Colostomy: Surgical creation of an opening from the colon to the body surface, often for waste elimination.

• Poliomyelitis: Inflammation of the gray matter of the spinal cord, commonly known as polio.

• Myorrhexis: Rupture of a muscle, often due to trauma.

• Cyanosis: Bluish discoloration of the skin, typically due to lack of oxygen in the blood.

Summary Table: Sample Medical Terms from the Worksheet

Conclusion

Understanding prefixes, suffixes, and word roots is fundamental for interpreting medical terminology in anatomy and physiology. This knowledge enables students to analyze and comprehend complex terms encountered in clinical and academic settings.