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HISTOLOGY : MODULE 2B > MODULE 2B : MUSCULAR TISSUE > Flashcards

MODULE 2B : MUSCULAR TISSUE Flashcards

0
Q

Cell membrane of myoblasts

A

SARCOLEMMA

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1
Q

Cytoplasm of myoblasts

A

SARCOPLASM

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2
Q

Multinucleated, nuclei are located at the periphery of the cell. Cross-striations are present

A

SKELETAL MUSCLE CELL

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3
Q

Embryonic origin of muscle cells

A

MESENCHYMAL CELL

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4
Q

Polygonally-shaped cells under cross section

A

SKELETAL MUSCLE CELL

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5
Q

Connective tissue coverings of skeletal muscle cells

A

COLLAGEN TYPE I & TYPE III

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6
Q

Connective tissue that surrounds the skeletal muscle bundle

A

EPIMYSIUM

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7
Q

Characteristic of Epimysium

A

DICT

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8
Q

Fascicle of muscle fiber

A

PERIMYSIUM

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9
Q

Muscle fiber is called

A

ENDOMYSIUM

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10
Q

Striations in muscle fibers are caused due to what alternating structures?

A

A BANDS & I BANDS

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11
Q

I bands are divided by what structure?

A

Z LINES

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12
Q

A series of sarcomeres that run the length of the muscle fiber is called

A

MYOFIBRIL

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13
Q

Region where myosin exists

A

H BANDS

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14
Q

Region where only actin exists

A

I BAND

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15
Q

Basic structural and functional unit of skeletal muscle

A

SARCOMERE

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16
Q

Moves the tropomyosin to expose the actin-binding site for myosin heads to form bridges

A

TROPONIN

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17
Q

Large protein, binding the A-band to the M and Z lines

A

TITIN

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18
Q

Denervation of skeletal muscle fibers lead to

A

ATROPHY & PARALYSIS

19
Q

Slow oxidative muscle type

A

TYPE I

20
Q

Muscle type found commonly in athletes

A

TYPE II

21
Q

Type of muscle with numerous hemoglobin resulting to its reddish color

A

TYPE I

22
Q

Muscle type which acts on rapid contractions / shirt bursts

A

TYPE II

23
Q

Muscle type with minimal glycogen

A

TYPE I

24
Q

Type of muscle with numerous mitochondria

A

TYPE II

25
Q

Type of muscle which acts on slow, continuous, prolonged contractions

A

TYPE I

26
Q

Small muscles with large NMJ for fine movements

A

TYPE IIb

27
Q

accumulation of lactic acid in muscle

A

MUSCLE ISCHEMIA

28
Q

Characterized by branched cells with a centrally located nuclei (may be binucleated)

A

CARDIAC MUSCLE CELLS

29
Q

Carries the richest blood supply among the three muscle fibers

A

CARDIAC MUSCLE CELLS

30
Q

Presence of intercalated disks

A

CARDIAC MUSCLE

31
Q

Anchoring site of actin filaments in cardiac muscle

A

FASCIA ADHERENS

32
Q

Binds cardiac cells together

A

DESMOSOMES

33
Q

Ionic continuity between cells

A

GAP JUNCTION

34
Q

Has more and larger T tubules but less developed SR

A

CARDIAC MUSCLE

35
Q

Smallest of the muscle cell types

A

SMOOTH MUSCLE CELL

36
Q

Characterized by fusiform shaped cells with centrally placed nuclei

A

SMOOTH MUSCLE

37
Q

Type of myofilament intermediate in all smooth muscle

A

DESMIN

38
Q

Type of myofilament in vascular smooth muscle

A

VIMENTIN

39
Q

True or False : Nerves initiate contractions

A

FALSE

NERVES : MODIFY, not initiate contractions

40
Q

Type muscle cell which acts in strong, quick discontinuous voluntary contractions

A

SKELETAL MUSCLE

41
Q

Type of muscle which acts in strong, quick continuous involuntary contractionsh

A

CARDIAC MUSCLE

42
Q

Type of muscle which acts on weak, slow involuntary contractions

A

SMOOTH MUSCLE

43
Q

No mitosis; limited regeneration

A

SKELETAL MUSCLE

44
Q

No regeneration beyond early childhood; damage leads to myocardial scar

A

CARDIAC MUSCLE (fibroblast proliferation)

45
Q

More regenerating ability through mitosis

A

SMOOTH MUSCLE

HISTOLOGY : MODULE 2B (5 decks)

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