Suffixes in Medical Terminology

Introduction

Suffixes are word endings that modify the meaning of a root word. In medical terminology, they often indicate procedures, conditions, diseases, or parts of speech. Understanding suffixes is essential for interpreting complex medical terms.

• -al, -ary, -eal, -ial, -ic, -ical, -ous, -um: Pertaining to (e.g., dermal = pertaining to the skin)

• -ase: Enzyme (e.g., lipase = fat-digesting enzyme)

• -atory: Pertaining to (e.g., respiratory = pertaining to breathing)

• -blast: Immature cell (e.g., osteoblast = bone-forming cell)

• -cele: Hernia, swelling (e.g., cystocele = hernia of the bladder)

• -centesis: Surgical puncture to remove fluid (e.g., amniocentesis)

• -chezia: Defecation, elimination of wastes (e.g., hematochezia = passage of bloody stools)

• -cyte: Cell (e.g., erythrocyte = red blood cell)

• -desis: Binding, fixation (e.g., arthrodesis = surgical fixation of a joint)

• -ectasis: Dilation, expansion (e.g., bronchiectasis = dilation of the bronchi)

• -ectomy: Surgical removal (e.g., appendectomy = removal of the appendix)

• -emia: Blood condition (e.g., anemia = lack of blood)

• -emesis: Vomiting (e.g., hyperemesis = excessive vomiting)

• -gen: Producing, forming (e.g., pathogen = disease-producing agent)

• -gram: Record, writing (e.g., electrocardiogram)

• -graphy: Process of recording (e.g., angiography)

• -iasis, -osis: Abnormal condition (e.g., cholelithiasis = gallstones)

• -itis: Inflammation (e.g., gastritis = inflammation of the stomach)

• -kinesis: Movement (e.g., dyskinesis = abnormal movement)

• -logy: Study of (e.g., cardiology = study of the heart)

• -lysis: Breakdown, destruction (e.g., hemolysis = destruction of red blood cells)

• -megaly: Enlargement (e.g., hepatomegaly = enlarged liver)

• -meter, -metry: Instrument for measuring, process of measuring (e.g., spirometer, spirometry)

• -oid: Resembling (e.g., osteoid = resembling bone)

• -oma: Tumor, mass (e.g., carcinoma = cancerous tumor)

• -opsy: To view (e.g., biopsy = view of life/tissue)

• -pathy: Disease (e.g., neuropathy = nerve disease)

• -penia: Deficiency (e.g., leukopenia = deficiency of white blood cells)

• -phagia: Eating, swallowing (e.g., dysphagia = difficulty swallowing)

• -plasty: Surgical repair (e.g., rhinoplasty = surgical repair of the nose)

• -pnea: Breathing (e.g., apnea = absence of breathing)

• -rrhage, -rrhagia: Bursting forth (e.g., hemorrhage = excessive bleeding)

• -rrhaphy: Suture (e.g., herniorrhaphy = suture of a hernia)

• -rrhea: Flow, discharge (e.g., diarrhea = frequent discharge of stool)

• -scope, -scopy: Instrument for viewing, process of viewing (e.g., endoscope, endoscopy)

• -spasm: Involuntary contraction (e.g., bronchospasm)

• -stasis: Stopping, controlling (e.g., hemostasis = stopping of bleeding)

• -stomy: Creation of an opening (e.g., colostomy = opening of the colon)

• -tomy: Incision, cutting into (e.g., tracheotomy = incision into the trachea)

• -ule, -ole: Small (e.g., arteriole = small artery)

Example:

Appendectomy = append (appendix) + -ectomy (removal) = surgical removal of the appendix.

Prefixes in Medical Terminology

Introduction

Prefixes are word parts added to the beginning of a root word to modify its meaning. They often indicate location, number, time, or status.

• a-, an-: Without, not (e.g., anemia = without enough blood)

• ab-: Away from (e.g., abduction = movement away from midline)

• ad-: Toward (e.g., adduction = movement toward midline)

• ante-: Before, forward (e.g., antenatal = before birth)

• anti-: Against (e.g., antibiotic = against life/microbes)

• auto-: Self (e.g., autoimmune = immune response against self)

• bi-: Two (e.g., bicuspid = two cusps)

• brady-: Slow (e.g., bradycardia = slow heart rate)

• con-, com-: With, together (e.g., congenital = present at birth)

• dia-: Through, complete (e.g., dialysis = separation through a membrane)

• dys-: Bad, painful, difficult (e.g., dysphagia = difficulty swallowing)

• em-, en-: In, within (e.g., embolism = condition of a plug within a vessel)

• endo-: Within (e.g., endoscopy = viewing within)

• epi-: Upon, over (e.g., epidermis = upon the skin)

• eu-: Good, normal (e.g., eupnea = normal breathing)

• ex-: Out, away from (e.g., exhale = breathe out)

• hemi-: Half (e.g., hemiplegia = paralysis of one side)

• hyper-: Excessive, above (e.g., hypertension = high blood pressure)

• hypo-: Below, deficient (e.g., hypoglycemia = low blood sugar)

• in-: In, not (context-dependent)

• inter-: Between (e.g., intercostal = between the ribs)

• intra-: Within (e.g., intravenous = within a vein)

• macro-: Large (e.g., macrocyte = large cell)

• mal-: Bad (e.g., malnutrition = bad nutrition)

• neo-: New (e.g., neoplasm = new growth)

• pan-: All (e.g., pancytopenia = deficiency of all blood cells)

• peri-: Around (e.g., pericardium = around the heart)

• poly-: Many (e.g., polyuria = excessive urination)

• post-: After (e.g., postoperative = after surgery)

• pre-: Before (e.g., prenatal = before birth)

• re-: Again, back (e.g., relapse = return of disease)

• retro-: Backward (e.g., retroperitoneal = behind the peritoneum)

• sub-: Under, below (e.g., subcutaneous = under the skin)

• tachy-: Fast (e.g., tachycardia = fast heart rate)

• trans-: Across, through (e.g., transdermal = through the skin)

Example:

Hypoglycemia = hypo- (low) + glyc (sugar) + -emia (blood condition) = low blood sugar condition.

Combining Forms in Medical Terminology

Introduction

Combining forms are root words with a combining vowel (usually 'o') that link roots to suffixes or other roots. They are essential for constructing and deconstructing medical terms.

• abdomin/o: Abdomen

• adip/o: Fat

• arthr/o: Joint

• cardi/o: Heart

• derm/o, dermat/o: Skin

• gastr/o: Stomach

• hepat/o: Liver

• my/o: Muscle

• oste/o: Bone

• pulmon/o: Lung

• ren/o, nephr/o: Kidney

• neur/o: Nerve

• hemat/o, hem/o: Blood

• enter/o: Intestine

• cephal/o: Head

• cyt/o: Cell

• path/o: Disease

• onc/o: Tumor

• psych/o: Mind

• rhin/o: Nose

• trache/o: Trachea (windpipe)

• ven/o: Vein

• arthr/o: Joint

• oste/o: Bone

• muscul/o, my/o: Muscle

• derm/o, cutane/o: Skin

• hepat/o: Liver

• nephr/o, ren/o: Kidney

• pulmon/o: Lung

• gastr/o: Stomach

• enter/o: Intestine

• cardi/o: Heart

• angi/o, vas/o: Vessel

• neur/o: Nerve

• hemat/o, hem/o: Blood

Example:

Osteoarthritis = oste/o (bone) + arthr/o (joint) + -itis (inflammation) = inflammation of bone and joint.

Medical Vocabulary Terms

Introduction

These terms are commonly encountered in clinical and academic settings. Understanding their definitions and applications is crucial for interpreting medical records and communicating effectively in healthcare.

• Adhesion: Abnormal union of tissues, often after surgery.

• Anastomosis: Surgical connection between two structures (e.g., blood vessels or intestines).

• Aneurysm: Localized dilation of a blood vessel due to weakness in the wall.

• Anorexia: Lack or loss of appetite.

• Ascites: Accumulation of fluid in the abdominal cavity.

• Auscultation: Listening to body sounds, typically with a stethoscope.

• Bifurcation: Division into two branches (e.g., tracheal bifurcation).

• Cholelithiasis: Presence of gallstones.

• Deglutition: The act of swallowing.

• Dysphagia: Difficulty swallowing.

• Edema: Swelling caused by excess fluid in tissues.

• Exacerbation: Worsening of symptoms.

• Gallstones: Solid deposits in the gallbladder (see cholelithiasis).

• Hematochezia: Passage of fresh blood through the anus, usually in or with stools.

• Hemorrhoids: Swollen veins in the lower rectum or anus.

• Hernia: Protrusion of an organ through the wall of the cavity that contains it.

• Ileus: Obstruction of the intestine.

• Infarction: Tissue death due to lack of blood supply.

• Intussusception: Telescoping of one part of the intestine into another.

• Ischemia: Lack of blood supply to a tissue.

• Jaundice (Icterus): Yellowing of the skin and eyes due to high bilirubin.

• Mastication: Chewing.

• Melena: Black, tarry stools indicating gastrointestinal bleeding.

• Nares: Nostrils.

• Necrosis: Death of tissue.

• Palpation: Examination by touch.

• Percussion: Tapping on a surface to determine underlying structure.

• Relapse: Return of disease after improvement.

• Remission: Disappearance of symptoms.

• Sequela: Condition resulting from a previous disease or injury.

• Thrombus: Blood clot within a vessel.

• Volvulus: Twisting of the intestine causing obstruction.

Example:

Ischemia can lead to infarction if blood supply is not restored.

Directional and Anatomical Terms

Introduction

Directional terms describe the locations of structures in relation to other structures or locations in the body. Anatomical planes and positions are used to describe cuts, views, and orientations.

• Anterior: Front of the body

• Posterior: Back of the body

• Sagittal plane: Divides body into right and left parts

• Coronal (frontal) plane: Divides body into anterior and posterior parts

• Dorsal: Back side

• Supine: Lying on the back, face up

• Prone: Lying on the stomach, face down

• Transverse plane: Divides body into upper and lower parts

• Superior: Above

• Inferior: Below

• Proximal: Closer to the point of attachment

• Distal: Farther from the point of attachment

Example:

The heart is superior to the stomach and anterior to the spine.

Body Cavities, Quadrants, and Regions

Body Cavities

The body contains several cavities that house organs. Understanding these is essential for describing locations of diseases or procedures.

• Cranial cavity: Contains the brain

• Spinal cavity: Contains the spinal cord

• Thoracic cavity: Contains heart and lungs

• Abdominal cavity: Contains digestive organs

• Pelvic cavity: Contains bladder, reproductive organs

Body Quadrants

The abdomen is divided into four quadrants for clinical reference:

• Right Upper Quadrant (RUQ)

• Left Upper Quadrant (LUQ)

• Right Lower Quadrant (RLQ)

• Left Lower Quadrant (LLQ)

Body Regions

The abdomen can also be divided into nine regions for more precise localization:

• Right hypochondriac

• Epigastric

• Left hypochondriac

• Right lumbar

• Umbilical

• Left lumbar

• Right iliac (inguinal)

• Hypogastric (pubic)

• Left iliac (inguinal)

Basic Anatomy of Major Body Systems

Skin (Integumentary System)

The skin is the largest organ, providing protection, sensation, and temperature regulation.

• Epidermis: Outer layer

• Dermis: Middle layer with blood vessels, nerves, glands

• Subcutaneous tissue: Fat and connective tissue beneath dermis

Gastrointestinal System

Responsible for digestion and absorption of nutrients.

• Mouth → Pharynx → Esophagus → Stomach → Small intestine (duodenum, jejunum, ileum) → Large intestine (cecum, colon, rectum) → Anus

• Accessory organs: Liver, gallbladder, pancreas

Pulmonary (Respiratory) System

Enables gas exchange (oxygen and carbon dioxide) with the environment.

• Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli

Cardiovascular System

Transports blood, nutrients, gases, and wastes throughout the body.

• Heart: Four chambers (right/left atria, right/left ventricles)

• Blood vessels: Arteries, veins, capillaries

Musculoskeletal System

Provides support, movement, and protection for the body.

• Bones: Provide structure and protection

• Muscles: Enable movement

• Joints: Allow flexibility and range of motion

Summary Table: Directional Terms

Additional info:

• Some combining forms and terms were grouped or expanded for clarity and completeness.

• Definitions and examples were added for terms not explicitly defined in the original list.

• Table of directional terms was inferred as a useful summary for exam preparation.