Injury & Repair Flashcards
What is the first step in skin healing?
Formation of a blood clot
What causes inflammation at the site of injury?
Release of inflammatory chemical signals like histamine 🧪
Which cells are responsible for collagen deposition during wound healing?
Fibroblasts 🛠️
What do macrophages do during tissue repair?
Engulf foreign matter to reduce infection 🦠
What is granulation tissue?
New tissue formed by fibroblasts and capillaries during healing 🌱
What is a keloid?
Overproduction of scar tissue resulting in raised scars ⚠️.
What is the term for the process of new blood vessel growth in wound healing?
Angiogenesis 💉
What is a common complication of untreated bedsores?
Infection leading to tissue death ⚰️.
How do stretch marks appear over time?
They start red and lighten over time ⏳.
How does a callus form on your skin?
Repeated friction causes thickening of the skin 🔨.
What do NSAIDs do to inflammation?
Reduce pain and inflammation by inhibiting prostaglandin production 💊.
What is the difference between primary and secondary union in wound healing?
Primary union is faster with close edges, secondary is slower with larger gaps ⏳.
What happens if inflammation becomes chronic?
It can lead to diseases like arthritis or tuberculosis 💥.
What is the term for cell death that occurs during tissue injury?
Necrosis ⚰️.
What is the role of blood capillaries in the healing process?
They increase blood flow and oxygen supply to the healing tissue 💧.
What is the process of tissue repair after injury called?
a) Apoptosis
b) Inflammation
c) Healing
d) Regeneration
c) Healing
Which type of cell is responsible for collagen deposition during wound repair?
a) Red blood cells
b) Fibroblasts
c) Macrophages
d) Mast cells
b) Fibroblasts
What is a keloid?
a) A scar with reduced collagen
b) A raised scar from excessive collagen formation
c) A scar that fades over time
d) A type of callus
b) A raised scar from excessive collagen formation
Which of the following is NOT a cardinal sign of inflammation?
a) Redness
b) Swelling
c) Pain
d) Nausea
d) Nausea
What happens during vasodilation in response to injury?
a) Blood vessels constrict
b) Blood vessels widen
c) Blood flow stops
d) Scabbing occurs
b) Blood vessels widen
- Which process describes the formation of new blood vessels in tissue repair?
a) Angiogenesis
b) Apoptosis
c) Hemostasis
d) Phagocytosis
Answer: a) Angiogenesis
What is the primary role of macrophages in wound healing?
a) Release histamine
b) Deposit collagen
c) Clear foreign matter
d) Form blood clots
c) Clear foreign matter
Which cells are primarily responsible for the formation of granulation tissue?
a) Mast cells
b) Red blood cells
c) Fibroblasts
d) Keratinocytes
c) Fibroblasts
What is the term for cell death that is controlled and does not trigger inflammation?
a) Apoptosis
b) Necrosis
c) Inflammation
d) Regeneration
a) Apoptosis
What is the main cause of atrophic scars?
a) Acne
b) Burns
c) Keloid formation
d) Stretching of the skin
a) Acne
