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Histology > Finals: Muscle > Flashcards

Finals: Muscle Flashcards

0
Q

A T-tubule surround what cellular structure at the end of the Z-line in muscle cell

A

Myofibril

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1
Q

What type of muscle is incapable of regeneration

A

Cardiac muscle

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2
Q

What morphologic structure lies within the I-band

A

Z-line

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3
Q

During contraction, calcium binds to what protein

A

Calmodulin

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4
Q

What type of muscles contain peripherally located nuclei

A

Skeletal muscle

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5
Q

What connective tissue surrounds a muscle fiber

A

Endomysium

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6
Q

What functional unit of a skeletal muscle lies between 2 Z lines

A

Sarcomere

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7
Q

What does a perimysium surround

A

Fascicle

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8
Q

What is the only filament found at the H band

A

Myosin

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9
Q

What type of muscle functions as a syncytium

A

Skeletal muscle

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10
Q

Large, elongated, sausage shaped nuclei are found in this type of muscle

A

Smooth muscle

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11
Q

Troponin and tropomyosin bind actin until what substance is released from the SR

A

Calcium

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12
Q

What is the major component of thick filament

A

Myosin

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13
Q

What structure do actin filament insert in

A

Z-line

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14
Q

What muscle cell structure is composed of fascia adherens & gap junctions

A

Intercalated disc

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15
Q

What is the main cell type found in the endomysium

A

Fibroblast

16
Q

What structure within the cytoplasm surround the myofibrils at the level of the Z-line

A

T tubules

17
Q

Epimysium is composed of what type of tissue

A

LCT

18
Q

What structure besides the Z-line contains only actin filaments

A

I-band

19
Q

What type of cells is multinucleated

A

Skeletal muscle

20
Q

What part of the striations seen in skeletal muscle do the actin and myosin filaments overlap

A

A-band

21
Q

What substance anchors thick filaments to the Z disc

A

Titin

22
Q

The primary function of the SR is to store & release what substance

A

Calcium

Histology (28 decks)

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