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Histology > Exam 1 – Lecture 9: Cartilage > Flashcards

Exam 1 – Lecture 9: Cartilage Flashcards

1
Q

What does cartilage provide?

A

Protection

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2
Q

What is cartilage used as?

A

Modeling for bone

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3
Q

What are the 3 types of cartilage?

A

Hyaline
Elastic
Fibrocartilage

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4
Q

Why does cartilage heal poorly?

A

It does not have blood vessels

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5
Q

What kind of matrix is in the hyaline cartilage?

A

Homogenous amorphous

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6
Q

What are 3 major compounds in matrix of hyaline cartilage?

A

Collagen
Proteoglycans
Mutliadhesive glycoproteins

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7
Q

What proteoglycans are found in the matrix of hyaline cartilage?

A

Hyaluronan
Chondroitin sulfate
Keratan sulfate

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8
Q

What is the most common type of cartilage?

A

Hyaline

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9
Q

What do proteoglycans provide?

A

Structure to cartilage

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10
Q

What is hyaline cartilage the model for?

A

Developing bone

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11
Q

What is hyaline cartilage made of?

A

Dense connective tissue

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12
Q

What is hyaline cartilage involved with?

A

Embryologic development

Fracture repair

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13
Q

What are locations of elastic cartilage?

A

External ear
Auditory tubes
Epiglottis

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14
Q

What is fibrocartilage a combination with?

A

Dense connective tissue

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15
Q

What is fibrocartilage made of?

A

Type 1 and 2 collagen

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16
Q

What does fibrocartilage do?

A

Reduce compressive and shearing forces

17
Q

What are the locations of fibrocartilage?

A

IV disks
Pelvic symphysis
Articular disks meniscus

18
Q

What are the 2 types of growth?

A

Appositional and interstitial

19
Q

Describe appositional growth

A

Occurs at the surface
Grows down from perichondrium
Carried out by modified fibroblasts

20
Q

Describe interstitial growth

A

Occurs centrally

Grows down from existing chondrocytes

21
Q

How does cartilage repair happen?

A

Calcification

22
Q

What are osteoclasts?

A

Cells that reabsorb bone because bones are constantly being torn down and rebuilt

23
Q

What type of collagen is the mineralized matrix of bone made of?

A

Mostly type 1

24
Q

What are the different possible shapes of bones?

A

Long
Short
Flat
Irregular

25
Q

What are the 2 types of densities of bones?

A

Spongy

Compact

26
Q

What does bone provide?

A

Rigid structure and protection

27
Q

What is bone made of?

A

Lacunae connected by canaliculi

28
Q

What is the development of bone called?

A

Osteogenesis

29
Q

What lives within lacunae?

A

Osteocytes

30
Q

What is the outside of the bone?

A

Periosteum

31
Q

What lives on the periosteum?

A

Nerves

32
Q

What is the inside of the bone?

A

Cavity endosteum

33
Q

What is the cartilage of the bone known as?

A

Epiphysis

34
Q

What is in a mature bone?

A

Osteon (Haversian system)
Blood supply
Less dense cellularity

Histology (30 decks)

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