Connective Tissue Flashcards by Kaitlyn Lee

Connective tissue cells have a common __________ origin.

Embryonic

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Mesoderm forms __________ cells

Mesenchymal

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What 4 things do undifferentiated mesenchymal stem cells specialize and become?

Fibroblasts
Tenoblast
Chondroblast
Osteoblast

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Fibroblast

Fibrocyte ligament

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Tenoblast

Tenocyte tendon

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Chondroblast

Chondrocyte cartilage

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Osteoblast

Osteocyte bone

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-blast

More metabolically active; CREATE Extracellular matrix

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-cyte

Mature cell that MAINTAINS Extracellular matrix

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Connective Tissue is made up of ______ + ____________ ______

Cells (**-blast or **-cyte) + Extracellular matrix (ECM)

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What does the Extracellular Matrix (ECM) do?

Plays important role; determines tissue function

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What are the 2 types of ECM?

Fibrillar
Interfibrillar

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Fibrillar

Structural proteins

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Interfibrillar

Gel-like ground substance

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Fibrillar component: all connective tissues contain ________ _______.

Protein fibers

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Name the 3 types of protein fibers

Collagen
Elastic
Reticular

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Collagen (3 characteristics)

Made from collagen in tri-helical structure
Well organized
Resists tensile loads (very little stretch)

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Elastic protein fiber (4 characteristics)

Made from elastin proteins
Ability to stretch
Develops tension
Returns to original length

Reticular protein fibers (2 characteristics)

Made from collagen fibrils (small fibers)
Poorly organized

Interfibrillar component is AKA

Ground substance

What does Interfibrillar component contain?

Proteoglycans

What are proteoglycans?

Protein core with glycosaminoglycans (GAGS) - “bottle brush”: attracts water

What are the 4 types of Connective Tissue?

Bone
Fibrous
Cartilage
Blood
(BBCF)

What are the types of Fibrous Connective tissue?

Dense and Loose

What are the types of Dense Fibrous Connective Tissue

Regular Elastic Irregular (REI)

What are the types of Loose Fibrous Connective Tissue?

Areolar Adipose Reticular (AAR)

Draw the Tissue Tree

*Draw Tree

What are the 3 types of cartilage?

Hyalin Elastic cartilage Fibrocartilage (HEF)

Hyalin is also called what?

Articular cartilage

Which type of cartilage is an embryonic precursor to bone?

Hyalin

Which cartilage is the strongest?

Hyalin (40% collagen, 60% gel - proteoglycan)

Which cartilage is mostly collagen?

Fibrocartilage (70% collagen)

Which cartilage is mostly elastin?

Elastic cartilage

Where can elastic cartilage be found?

Epiglottis and outer ears

What type of cartilage is NOT found in joints?

Elastic cartilage

What are the 4 types of Connective Tissue?

Bone Blood Cartilage Fibrous (BBCF)

Bone is composed of what 2 type of materials?

Organic and inorganic

What type of organic materials make up bone? (3)

Cells Collagen fibers Gel substance made from proteoglycans

What type of inorganic material make up bone?

Mineral salts: hydroxyapatite crystals

What does blood consist of?

Cells Extracellular fluid matrix (plasma) Fibers (albumin)

What does blood consist of?

Cells Extracellular fluid matrix (plasma) Fibers (albumin)

Which of the 4 connective tissues is NOT a typical connective tissue?

Blood

T/F: Blood DOES connect or support other tissues.

False; it does not