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HISTO LEC FINALS
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Cards (210)
What is the primary role of connective tissue?
Support
,
protection
, and structure
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How does connective tissue aid in tissue repair?
By facilitating the
transport
of nutrients
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Which organ has the most connective tissue?
Skin
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What are the major classes of connective tissues?
Proper
,
cartilage
,
bone
,
blood
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What is the function of fat in connective tissue?
Insulation
and fuel storage
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How do bones, tendons, and cartilage function in the body?
They
bind
, support, and protect organs
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What is
mesenchyme
?
A type of loose connective tissue
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What distinguishes connective tissues from other tissue types?
Common origin,
vascularity
, extracellular matrix
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What is the extracellular matrix composed of?
Ground substance
and
protein fibers
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What role do proteoglycans play in connective tissue?
Provide
hydration
and swelling pressure
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What are the three main types of fibers in connective tissue?
Collagen
,
elastic
,
reticular
fibers
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What is the function of collagen fibers?
Provide
tensile
strength and resist stretching
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Where are collagen fibers found abundantly?
Tendons
, ligaments, skin, cartilage, bone
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What happens when collagen is injected into the skin?
Restores volume and smooths
wrinkles
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Why are collagen injections not permanent?
Injected collagen is gradually
absorbed
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What is scleroderma?
A condition of excessive
collagen
production
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What are elastic fibers made of?
Elastin
and
fibrillin
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What is the function of elastic fibers?
Allow tissues to return to
original
shape
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Where are elastic fibers found?
Blood vessels
, skin, and lungs
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What is Marfan Syndrome?
A mutation affecting
elastic
fibers
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What are the symptoms of
Cutis
Laxa
?
Loose, sagging skin and respiratory issues
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What are reticular fibers made of?
Collagen type
III
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What is the function of
reticular
fibers?
Provide structural support and networks
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Where are reticular fibers found?
Spleen
, liver, lymph nodes, bone marrow
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What are resident cells in connective tissue?
Permanent
cells producing the extracellular matrix
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What do fibroblasts do?
Synthesize
collagen and elastic fibers
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What is the role of adipocytes?
Store
energy
and provide
insulation
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What do chondroblasts produce?
Cartilage
matrix including collagen
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What is the function of osteoblasts?
Produce
bone
matrix and initiate mineralization
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What do mast cells release?
Histamine
and inflammatory mediators
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What triggers mast cell degranulation?
Binding of
allergens
to IgE antibodies
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What is anaphylactic shock?
A severe
allergic
reaction
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What is the emergency treatment for anaphylactic shock?
Epinephrine
injection
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What do mesenchymal stem cells differentiate into?
Various
connective
tissue cells
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What are
macrophages
responsible for?
Phagocytosing debris and pathogens
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What do plasma cells produce?
Antibodies
for immune defense
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What is the characteristic feature of
plasma
cells?
Clock-face nucleus
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What is the process of antibody production by plasma cells?
Involves key
immune
cells and cytokines
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What do antihistamines help reduce?
Symptoms like swelling and
itching
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What is the role of steroids in inflammation?
They reduce
long-term
inflammation and prevent recurrence
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See all 210 cards
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