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MLSC 1105 Microanatomy > 2. Muscle Tissue > Flashcards

2. Muscle Tissue Flashcards

1
Q

all the muscle fibres from z line to z line. the fnal unit

A

what is sarcomere

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2
Q

cytoplasm of muscle cells

A

what is sarcoplasm

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3
Q

f

A

what is myofibril

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4
Q

the smaller of the two main contractile protein

A

what is actin

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5
Q

thin filaments

A

what is actin

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6
Q

thick filaments

A

what is myosin

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7
Q

prominent junction between myocardial cells

A

what is intercalate disc

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8
Q

junctions that helped to attach muscle cells together

A

what is intercalated disc

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9
Q

connective tissue that covers individual muscle fibre/cell

A

what is endomysium

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10
Q

connective tissue that surrounds each fascicle (bundle of muscle fibres)

A

what is perimysium

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11
Q

outermost layer of connective tissue that surrounds entire muscle

A

epimysium

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12
Q

found in capillaries and small venules. control blood flow. capable of contraction. “stem cells”

A

what is pericytes

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13
Q

epithelial cells with contractile contractile actin filaments and are capable of contraction, under nervous control. basally located

A

what is myoepithelial cells

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14
Q

key ID features on H&E preps of skeletal muscle

A

long nucleus, elongated

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15
Q

key ID features on H&E preps of cardiac muscle

A

striated, branched, shorter muscle cells. single central nucleus. large, square to round

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16
Q

lack visible striations, myofibrils haphazardly arranged. spindle shaped, single central elongated nucleus

A

key ID features on H&E preps of smooth muscle

17
Q

dark overlap of thin and thick filaments

A

what is A band

18
Q

light and thin filaments (just the actin filaments)

A

what is I band

19
Q

pale band within the A band

A

what is H zone

20
Q

bisects each A band

A

what is M line

21
Q

bisects each I band

A

what is Z line

22
Q

location of skeletal muscle

A

j

23
Q

fn of skeletal muscle

A

d

24
Q

contraction mechanism of skeletal muscle

A

d

25
Q

d

A

what is muscle spindles

26
Q

the outer layer of the heart

A

what is epicardium

27
Q

predominant theory of muscle contraction

A

what is sliding filament

MLSC 1105 Microanatomy (2 decks)

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