Key Terms and Concepts in Anatomy & Physiology: Pathology, Dermatology, and Musculoskeletal System

Chapter 4: Pathology and Oncology

Key Terms in Pathology and Oncology

This section introduces essential terminology related to disease processes, cancer biology, and medical procedures in pathology and oncology. Understanding these terms is crucial for interpreting clinical cases and pathology reports.

• Autopsy: A post-mortem examination to determine the cause of death and study disease processes.

• Biopsy: The removal of tissue for diagnostic examination under a microscope.

• Cachexia: Severe weight loss and muscle wasting seen in chronic diseases, especially cancer.

• Carcinoma: A malignant tumor arising from epithelial cells.

• Immunotherapy: Treatment that uses the body's immune system to fight diseases such as cancer.

• Lesion: Any abnormal tissue change due to injury or disease.

• Metaplasia: The transformation of one differentiated cell type to another.

• Pathologist: A physician specializing in diagnosing diseases by examining tissues and fluids.

• Remission: A decrease or disappearance of signs and symptoms of disease.

• Scarring: The formation of fibrous tissue as a result of injury or surgery.

• Tissue engineering: The use of biological and engineering principles to restore, maintain, or improve tissue function.

• Tissue rejection: The immune response against transplanted tissue.

• Tissue transplantation: The transfer of tissue from one individual to another.

• Tumor grading: Classification of tumors based on their appearance and degree of malignancy.

• Tumor staging: Assessment of the extent of cancer spread in the body.

• Xenotransplant: Transplantation of tissue or organs from one species to another.

Example: A pathologist may perform a biopsy to diagnose carcinoma and determine tumor grading and staging for treatment planning.

Chapter 5: Dermatology and Skin Disorders

Common Skin Conditions and Terminology

This section covers important terms related to skin diseases, infections, and dermatological procedures. Recognizing these conditions is vital for clinical assessment and treatment.

• Carbuncle: A cluster of boils caused by bacterial infection.

• Cold sore: A lesion caused by herpes simplex virus infection.

• Dermatology: The branch of medicine dealing with skin, hair, and nails.

• Eczema: A chronic inflammatory skin condition characterized by itching and redness.

• Frostbite: Tissue damage caused by exposure to extreme cold.

• Furuncle: A boil; a painful infection of a hair follicle.

• Gangrene: Death of tissue due to loss of blood supply or infection.

• Impetigo: A contagious bacterial skin infection, common in children.

• Onycholysis: Separation of the nail from the nail bed.

• Pallor: Paleness of the skin, often due to anemia or shock.

• Porphyria: A group of disorders affecting heme production, leading to skin and nervous system symptoms.

• Psoriasis: A chronic autoimmune skin disease causing red, scaly patches.

• Scleroderma: Hardening and tightening of the skin and connective tissues.

• Tinea: Fungal infection of the skin, also known as ringworm.

• Urticaria: Also known as hives; raised, itchy welts on the skin.

Example: Eczema and psoriasis are common chronic skin conditions managed by dermatologists.

Chapter 6: Musculoskeletal Disorders and Procedures

Bone and Joint Pathologies

This section introduces terms related to bone diseases, joint disorders, and orthopedic procedures. These concepts are essential for understanding musculoskeletal health and treatment options.

• Achondroplasia: A genetic disorder causing dwarfism due to abnormal cartilage formation.

• Bone marrow transplant: Replacement of diseased bone marrow with healthy marrow.

• Closed reduction: Non-surgical realignment of fractured bones.

• Dual-energy x-ray absorptiometry (DEXA): Imaging technique to measure bone mineral density.

• Open reduction: Surgical realignment of fractured bones.

• Orthopedics: Medical specialty focused on bones, joints, and muscles.

• Osteogenesis imperfecta (OI): Genetic disorder causing brittle bones.

• Osteomyelitis: Infection of bone tissue.

• Osteoporosis: Condition characterized by decreased bone density and increased fracture risk.

• Osteosarcoma: A malignant bone tumor.

• Paget's disease: Chronic bone disorder causing abnormal bone remodeling.

• Traction: Application of a pulling force to align bones or relieve pressure.

Example: DEXA scans are used to diagnose osteoporosis, while bone marrow transplants treat certain blood disorders.

Chapter 7: Cranial and Spinal Procedures

Neurosurgical and Spinal Terms

This section covers procedures and conditions affecting the skull and spine, which are critical for neurological and orthopedic health.

• Craniotomy: Surgical opening of the skull to access the brain.

• Deviated nasal septum: Displacement of the nasal septum, often causing breathing difficulties.

• Herniated disc: Protrusion of intervertebral disc material, causing nerve compression.

• Kyphosis: Excessive outward curvature of the spine, leading to a hunched posture.

• Laminectomy: Surgical removal of part of a vertebra to relieve spinal cord pressure.

• Lordosis: Excessive inward curvature of the lower spine.

• Spina bifida: Congenital defect where the spinal cord does not close properly.

• Scoliosis: Abnormal lateral curvature of the spine.

• Spinal fusion: Surgical joining of two or more vertebrae to stabilize the spine.

Example: Scoliosis may require spinal fusion surgery for correction.

Chapter 8: Bone Procedures and Measurements

Bone Repair and Assessment

This section introduces terms related to bone injury management and measurement techniques used in orthopedics.

• Bone bruise: Injury to bone tissue without fracture, causing pain and swelling.

• Bone graft: Transplantation of bone tissue to repair defects or fractures.

• Genu valgum: Condition where knees angle inward (knock-knees).

• Pelvimetry: Measurement of the dimensions of the pelvis, often used in obstetrics.

Example: Bone grafts are commonly used in orthopedic surgery to promote bone healing.

Summary Table: Selected Terms and Their Definitions

Term	Definition	System/Field
Carcinoma	Malignant tumor of epithelial origin	Oncology
Osteoporosis	Decreased bone density, increased fracture risk	Musculoskeletal
Psoriasis	Chronic autoimmune skin disease	Dermatology
Spinal fusion	Surgical joining of vertebrae	Orthopedics/Neurosurgery
Biopsy	Removal of tissue for diagnostic examination	Pathology