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Y2 MSK > Histology > Flashcards

Histology Flashcards

1
Q

Where are nuclei located in muscle fibres?

A

At the periphery, just under the cell membrane (sarcolemma)

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2
Q

What are muscle fibres grouped into?

A

Fascicles

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3
Q

What is the connective tissue that surrounds the whole muscle called?

A

Epimysium

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4
Q

What is the connective tissue around a single fascicle called?

A

Perimysium

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5
Q

What is the connective tissue around a single muscle fibre called?

A

Endomysium

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6
Q

Sarcomeres are placed end-to-end in their thousands to form what?

A

Myofibril

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7
Q

List the 3 types of skeletal muscle fibre

A

Type I
Type IIA
Type IIB

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8
Q

Describe type I skeletal muscle fibre

A

Slow to contract
Abundant mitochondria; resist fatigue
Less force
Red fibres

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9
Q

Describe type IIA skeletal muscle fibre

A

Relatively fast contracting compared to type I

Uncommon

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10
Q

Describe type IIB skeletal muscle fibre

A

Rapid contraction
Few mitochondria; anaerobic metabolism
Great force
White fibres

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11
Q

What are the cells found within cartilage called? Where in the cartilage are they found?

A

Chondrocytes

Lacuna

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12
Q

List the 3 main types of cartilage

A

Hyaline
Elastic
Fibrocartilage

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13
Q

Bone is 65% _____, 23% _____ and 10% ______

A

Mineral, collagen, water

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14
Q

What are the cells within bone called?

A

Osteocytes

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15
Q

What is the composition of bone?

A

Collagen
Non-collagenous proteins
Water
Bioapitative (form of Ca PO4)

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16
Q

What types of bone forms the outer shell and epiphysis of bones, respectively?

A

Cortical bone

Trabecular bone - fine meshwork, spongy

17
Q

What are the two types of canals found within bone? What are they surrounded by?

A

Haversion and Volkmann canals

Osteons

18
Q

Which remodelling cells within bone are involved in the formation of new bone?

A

Osteoblasts

19
Q

Which remodelling cells within bone are involved in bone reasorption?

A

Osteoclasts

Y2 MSK (30 decks)

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