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HISTOLOGY LAB > MUSCLE TISSUE MIDTERMS > Flashcards

MUSCLE TISSUE MIDTERMS Flashcards

1
Q

limited to Heart (Myocardium) and Large Blood Vessels
attached to heart

A

CARDIAC

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2
Q

Present in walls and parenchyma of most visceral organs,
walls of blood vessels and skin

A

SMOOTH

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3
Q

Comprised all named voluntary muscles in the body (ex.
Gastrocnemius, Latissimus Dorsi)
* Most originate and/or insert in bone

A

SKELETAL

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4
Q
  • Connective tissue which envelops muscles
  • A dense irregular connective tissue that surrounds the
    entire skeletal muscle
A

Epimysium

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5
Q
  • Connective tissue which envelops muscle
    bundles/fascicles
  • Less dense and thinner irregular connective tissue layer
A

Perimysium

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6
Q

A thin layer of particular connective tissue fibers which
invests now into individual muscle fibers that will separate
each muscle fiber

A

Endomysium

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7
Q

Equivalent to your skeletal muscle fiber

A

Muscle cell

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8
Q
  • Long and cylindrical
  • Multi-nucleated (nucleus is located peripherally)
  • Each pf this muscle fiber of subunit is called your
    myofibrils
A

Skeletal muscle fiber

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9
Q

o Extends the entire length of your fiber
o Composed of smaller myofilaments which
formed the contractile thin protein actin and a
thick protein myosin (thick and thin filaments)

A

Myofibrils

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10
Q

Light Band

A

(I-Band)

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11
Q

Dark Band

A

(A-Band)

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12
Q

o Zwischenscheiben Line; Z-band; Z-disc
o dark line which bisects I-Band

A

Z-Line

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13
Q

o Z-line to Z-line
o Repeating units which make up Myofibrils

A

Sarcomere

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14
Q

o Henle’s Band; Heller Band; Hell Band; Henson’s
Band
o lighter zone in center of A-Band

A

H-Band

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15
Q

o Mittelscheibe Line
o thin, dark band which bisects the H-Band

A

M-Line

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16
Q
  • contract rapidly but briefly
  • fatigues fast
  • low Myoglobin content
  • fewer Mitochondria; large in diameter than red
  • example: Extraocular Muscles
A

WHITE (FAST TWICTH) MUSCLE

17
Q
  • unique in cardiac muscles
  • cross chain of cardiac cells at irregular interval
  • represent junctional complexes of muscle cells
  • Anchors Myofibrils
  • Allows for instantaneous spread of contractile stimulus
A

INTERCALATED DISCS

18
Q
  • contract at slower rate but capable of continuous
    contraction
  • do not fatigue easily
  • richer blood supply than white
A

RED (SLOW TWICTH) MUSCLE

19
Q

Appears as an elongated individual fiber with a fusiform
shape of slender bundles called your

A

fascicle

20
Q

muscle cells (basic unit of your muscle)

A

Muscle Fiber

21
Q

cell membrane of muscle cells

A

Sarcolemma

22
Q

sER

A

Sarcoplasmic Reticulum

23
Q

Sarcosomes

A

– mitochondria

24
Q

Sarcoplasm

A

cytoplasm

25
Q

Muscle is classified into three types:

A

skeletal, cardiac, and
smooth muscle.

26
Q

The cytoplasm of muscle cells is called _____, and
the surrounding cell membrane or plasmalemma is called
________.

A

sarcoplasm and sarcolemma

27
Q

All muscle tissues consist of elongated cells called

A

fibers

28
Q

the term ______ is used when in contrast of the connective tissue fiber.

A

fiber

29
Q

every muscle fiber is surrounded by a basal lamina called _____

A

Endomysium

30
Q

its plasma membrane is called _____

A

Sarcolemma

31
Q

within the sarcoplasm are the cytoplasmic contractile elements _____

A

myofilaments

32
Q

a muscle that has the ability to conduct an action potential

A

conductivity

33
Q

when stimulated the muscle will react

A

irritability

34
Q

A muscle can shorten or produce tension between its ends

A

contractility

35
Q

a muscle can return into resting properties after contraction

A

relaxation

36
Q

a muscle can be stretched by a force outside of the muscle itself

A

distensibility

37
Q

the muscle will resist elongation and will return to its original position after passive or active elongation

A

elasticity

HISTOLOGY LAB (21 decks)

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