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1. MSK > Histology > Flashcards

Histology Flashcards

1
Q

What is a fasicle?

A

group of fibres

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2
Q

How many fasicles do muscles contain?

A

several

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3
Q

Where is the epimysium found?

A

around a muscle

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4
Q

Where are perimysiums found?

A

around a fasicle

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5
Q

Where are endomysiums found?

A

around single muscle fibres

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6
Q

Why are skeletal muscles striated?

A

all of the adjacent myofibrils are held in registry with each other so the z lines match up

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7
Q

What matures to form chondrocytes?

A

chondroblasts

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8
Q

Where are chondrocytes found?

A

in the lacuna in the extracellular matrix

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9
Q

What colour is hyaline cartilage?

A

blue white and translucent

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10
Q

What colour is eastic cartilage?

A

yellow and flexible

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11
Q

What colour is fibrocartilage?

A

white

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12
Q

What is ECM in cartilage made up of?

A

75% water

25% organic material - type 2 collagen and proteoglycan aggregates

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13
Q

What is the difference between cancellous and trabecular bone? - both lammellar bone

A

cancellous bone has canals

trabecular bone had spaces adjacent to the bone

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14
Q

What is the diaphysis made up of? What part of bone does it make?

A

cortical bone

shaft of bone

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15
Q

What is the epiphysis made up of? What part of bone does it make?

A

cancellous or trabecular bone

ends of the bone

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16
Q

What do canals in the bone contain?

A

osteocytes

17
Q

What is the role of osteoprogenitor cells?

A

serve as a pool of reserve osteocytes

found on bone surfaces

18
Q

What is the role of osteoblasts?

A

bone forming cells on the surface of developing bone

19
Q

What is the role of osteoclasts?

A

responsible for bone reabsorption

large multinucleated cells

20
Q

What is the role of osteocytes?

A

a bone cell trapped in a bone matrix

21
Q

What is osteoid? What is it secreted by? What does it become?

A

collagen, GAGs, proteoglycans
secreted by osteoblasts
mineralised to bone

22
Q

What is the mineral of bone made up of?

A

calcium phosphate crystals

23
Q

What type of bone is laid down during development or following a break?

A

woven bone

1. MSK (36 decks)

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